bluuebunny/crossref_metadata_2025 huggingface dataset:
Normally-off GaN MOSFETs on Silicon Substrates with High-temperature Operation
Authors: Kambayashi Hiroshi , Niiyama Yuki , Nomura Takehiko , Iwami Masayuki , Satoh yoshihiro , Kato Sadahiro
Published: December 2009

We have demonstrated enhancement-mode n-channel gallium nitride (GaN) MOSFETs on Si (111) substrates with high-temperature operation up to 300 °C. The GaN MOSFETs have good normally-off operation with the threshold voltages of +2.7 V. The MOSFET exhibits good output characteristics from room temperature to 300 °C. The leakage current at 300°C is less than 100 pA/mm at the drain-to-source voltage of 0.1 V. The on-state resistance of MOSFET at 300°C is about 1.5 times as high as that at room temperature. These results indicate that GaN MOSFET is suitable for high-temperature operation compared with AlGaN/GaN HFET.
Glucocorticoid receptor over-expression promotes human small cell lung cancer apoptosis in vivo and thereby slows tumor growth
Authors: Sommer Paula , Cowen Rachel L , Berry Andrew , Cookson Ann , Telfer Brian A , Williams Kaye J , Stratford Ian J , Kay Paul , White Anne , Ray David W
Published: December 2009

Small cell lung cancer (SCLC) is an aggressive tumor, associated with ectopic ACTH syndrome. We have shown that SCLC cells are glucocorticoid receptor (GR) deficient, and that restoration of GR expression confers glucocorticoid sensitivity and induces apoptosis in vitro. To determine the effects of GR expression in vivo, we characterized a mouse SCLC xenograft model that secretes ACTH precursor peptides, and so drives high circulating corticosterone concentrations (analogous to the ectopic ACTH syndrome). Infection of SCLC xenografts with GR-expressing adenovirus significantly slowed tumor growth compared with control virus infection. Time to fourfold initial tumor volume increased from a median of 9 days to 16 days (P=0.05; n=7 per group). Post-mortem analysis of GR-expressing tumors revealed a threefold increase in apoptotic (TUNEL positive) cells (P<0.01). Infection with the GR-expressing adenovirus caused a significant reduction in Bcl-2 and Bcl-xL transcripts. Furthermore, in both the GR-expressing adenovirus-infected cells and tumors, a significant number of uninfected cells underwent apoptosis, supporting a bystander cell killing effect. Therefore, GR expression is pro-apoptotic for human SCLCs in vivo, as well as in vitro, suggesting that loss of GR confers a survival advantage to SCLCs.
Limited potential for terrestrial carbon sequestration to offset fossil‐fuel emissions in the upper midwestern US
Authors: Fissore Cinzia , Espeleta Javier , Nater Edward A , Hobbie Sarah E , Reich Peter B
Published: December 2009

Many carbon dioxide (CO2) emission‐reduction strategies currently under consideration rely on terrestrial carbon (C) sequestration to offset substantial proportions of CO2 emissions. We estimated C sequestration rates and potential land areas for a diverse array of land‐cover changes in the Upper Midwest of the US, a “best case” region for this study because of its relatively modest CO2 emissions and the large areas of cropland potentially available for conversion. We then developed scenarios that apply some of the most widespread mitigation strategies to the region: the first, which aimed to offset 29% of regional CO2 emissions, required the unrealistic loss of two‐thirds of working cropland; the second, which estimated the emission offset attainable by conversion of 10% of harvested croplands (5.8% of the US total), resulted in <5% CO2 emissions reduction for the region (<1.1% of total US emissions). There is limited capacity for terrestrial C sequestration, so strategies should aim to directly reduce CO2 emissions to mitigate rising atmospheric CO2 concentrations.
Applying electronic documents in development of the healthcare information system in the Republic of Serbia
Authors: Jovanovic-Milenkovic Marina , Radojicic Zoran , Milenkovic Dejan , Vukmirovic Dragan
Published: December 2009

During the planning and implementation of Information and Communication Technologies solutions in the healthcare system, attention should be focused on the interests of citizens, healthcare employees, and the public. The project 'Development of the Healthcare Information System for Basic Healthcare and Pharmaceutical Services' demands the implementation of Electronic Healthcare Documentation in the Healthcare Information System of Serbia. This article represents a short overview of previous development of the healthcare information system. Electronic health documentation needs to represent basic health process of every single user. Healthcare Information Systems is based on patients, medical documents, information exchange about patient's health between health's, insurances and financials institutions, with primary goal to made healthy population with less cost.
A Novel Hypomorphic PDX1 Mutation Responsible for Permanent Neonatal Diabetes With Subclinical Exocrine Deficiency
Authors: Nicolino Marc , Claiborn Kathryn C. , Senée Valérie , Boland Anne , Stoffers Doris A. , Julier Cécile
Published: December 2009

OBJECTIVE

Genes responsible for monogenic forms of diabetes have proven very valuable for understanding key mechanisms involved in β-cell development and function. Genetic study of selected families is a powerful strategy to identify such genes. We studied a consanguineous family with two first cousins affected by neonatal diabetes; their four parents had a common ancestor, suggestive of a fully penetrant recessive mutation.

RESEARCH DESIGN AND METHODS

We performed genetic studies of the family, detailed clinical and biochemical investigations of the patients and the four parents, and biochemical and functional studies of the new mutation.

RESULTS

We found a novel mutation in the pancreatic and duodenal homeobox 1 gene (PDX1, IPF1) in the two patients, which segregated with diabetes in the homozygous state. The mutation resulted in an E178G substitution in the PDX1 homeodomain. In contrast to other reported PDX1 mutations leading to neonatal diabetes and pancreas agenesis, homozygosity for the E178G mutation was not associated with clinical signs of exocrine pancreas insufficiency. Further, the four heterozygous parents were not diabetic and displayed normal glucose tolerance. Biochemical studies, however, revealed subclinical exocrine pancreas insufficiency in the patients and slightly reduced insulin secretion in the heterozygous parents. The E178G mutation resulted in reduced Pdx1 transactivation despite normal nuclear localization, expression level, and chromatin occupancy.

CONCLUSIONS

This study broadens the clinical spectrum of PDX1 mutations and justifies screening of this gene in neonatal diabetic patients even in the absence of exocrine pancreas manifestations.
Mortality Trends in Subjects With and Without Diabetes During 33 Years of Follow-up
Authors: Jansson Stefan P.O. , Andersson Dan K.G. , Svärdsudd Kurt
Published: December 2009

OBJECTIVE

Mortality rates have declined substantially over the past decades in the general population, but the situation among diabetic subjects is less clear. The aim of this study was to analyze mortality trends in diabetic and nondiabetic subjects during 1972–2004.

RESEARCH DESIGN AND METHODS

Since 1972, all patients with diabetes are entered in a diabetes register at Laxå Primary Health Care Center; 776 incident cases were recorded up to 2001. The register has been supplemented with a nondiabetic population of 3,880 subjects and with data from the National Cause of Death Register during 1972 to 2004.

RESULTS

During the 33-year follow-up period, 233 (62.0%) diabetic women and 240 (60.0%) diabetic men and 995 (52.9%) nondiabetic women and 1,082 (54.1%) nondiabetic men died. The age-adjusted hazard ratio (HR) for all-cause mortality among diabetic and nondiabetic subjects was 1.17 (P < 0.0021) for all, 1.22 (P < 0.007) for women, and 1.13 (P = 0.095) for men. The corresponding cardiovascular disease (CVD) mortality HRs were 1.33 (P < 0.0001), 1.41 (P < 0.0003), and 1.27 (P < 0.0093), respectively. The CVD mortality reduction across time was significant in nondiabetic subjects (P < 0.0001) and in men with diabetes (P = 0.014) but not in diabetic women (P = 0.69). The results regarding coronary heart disease (CHD) were similar (P < 0.0001, P < 0.006, and P = 0.17, respectively). The CVD and CHD mortality rate change across time was fairly linear in all groups.

CONCLUSIONS

Diabetic subjects had less mortality rate reduction during follow-up than nondiabetic subjects. However the excess mortality risk for diabetic subjects was smaller than that found in other studies.
Active Care Management Supported by Home Telemonitoring in Veterans With Type 2 Diabetes
Authors: Stone Roslyn A. , Rao R. Harsha , Sevick Mary Ann , Cheng Chunrong , Hough Linda J. , Macpherson David S. , Franko Carol M. , Anglin Rebecca A. , Obrosky D. Scott , DeRubertis Frederick R.
Published: December 2009

OBJECTIVE

We compared the short-term efficacy of home telemonitoring coupled with active medication management by a nurse practitioner with a monthly care coordination telephone call on glycemic control in veterans with type 2 diabetes and entry A1C ≥7.5%.

RESEARCH DESIGN AND METHODS

Veterans who received primary care at the VA Pittsburgh Healthcare System from June 2004 to December 2005, who were taking oral hypoglycemic agents and/or insulin for ≥1 year, and who had A1C ≥7.5% at enrollment were randomly assigned to either active care management with home telemonitoring (ACM+HT group, n = 73) or a monthly care coordination telephone call (CC group, n = 77). Both groups received monthly calls for diabetes education and self-management review. ACM+HT group participants transmitted blood glucose, blood pressure, and weight to a nurse practitioner using the Viterion 100 TeleHealth Monitor; the nurse practitioner adjusted medications for glucose, blood pressure, and lipid control based on established American Diabetes Association targets. Measures were obtained at baseline, 3-month, and 6-month visits.

RESULTS

Baseline characteristics were similar in both groups, with mean A1C of 9.4% (CC group) and 9.6% (ACM+HT group). Compared with the CC group, the ACM+HT group demonstrated significantly larger decreases in A1C at 3 months (1.7 vs. 0.7%) and 6 months (1.7 vs. 0.8%; P < 0.001 for each), with most improvement occurring by 3 months.

CONCLUSIONS

Compared with the CC group, the ACM+HT group demonstrated significantly greater reductions in A1C by 3 and 6 months. However, both interventions improved glycemic control in primary care patients with previously inadequate control.
Effect of Rosiglitazone and Ramipril on β-Cell Function in People With Impaired Glucose Tolerance or Impaired Fasting Glucose
Authors: Hanley Anthony J. , Zinman Bernard , Sheridan Patrick , Yusuf Salim , Gerstein Hertzel C. ,   for the Diabetes Reduction Assessment With Ramipril and Rosiglitazone Medication (DREAM) Investigators
Published: December 2009

OBJECTIVE

The objective of this study was to determine the degree to which ramipril and/or rosiglitazone changed β-cell function over time among individuals with impaired fasting glucose (IFG) and/or impaired glucose tolerance (IGT) who participated in the Diabetes Reduction Assessment With Ramipril and Rosiglitazone Medication (DREAM) Trial, which evaluated whether ramipril and/or rosiglitazone could prevent or delay type 2 diabetes in high-risk individuals.

RESEARCH DESIGN AND METHODS

The present analysis included subjects (n = 982) from DREAM trial centers in Canada who had oral glucose tolerance tests at baseline, after 2 years, and at the end of the study. β-Cell function was assessed using the fasting proinsulin–to–C-peptide ratio (PI/C) and the insulinogenic index (defined as 30–0 min insulin/30–0 min glucose) divided by homeostasis model assessment of insulin resistance (insulinogenic index [IGI]/insulin resistance [IR]).

RESULTS

Subjects receiving rosiglitazone had a significant increase in IGI/IR between baseline and end of study compared with the placebo group (25.59 vs. 1.94, P < 0.0001) and a significant decrease in PI/C (−0.010 vs. −0.006, P < 0.0001). In contrast, there were no significant changes in IGI/IR or PI/C in subjects receiving ramipril compared with placebo (11.71 vs. 18.15, P = 0.89, and −0.007 vs. −0.008, P = 0.64, respectively). The impact of rosiglitazone on IGI/IR and PI/C was similar within subgroups of isolated IGT and IFG + IGT (all P < 0.001). Effects were more modest in those with isolated IFG (IGI/IR: 8.95 vs. 2.13, P = 0.03; PI/C: −0.003 vs. −0.001, P = 0.07).

CONCLUSIONS

Treatment with rosiglitazone, but not ramipril, resulted in significant improvements in measures of β-cell function over time in pre-diabetic subjects. Although the long-term sustainability of these improvements cannot be determined from the present study, these findings demonstrate that the diabetes preventive effect of rosiglitazone was in part a consequence of improved β-cell function.
Thoracoabdominal Calcifications Predict Cardiovascular Disease Mortality in Type 2 Diabetic and Nondiabetic Subjects
Authors: Juutilainen Auni , Lehto Seppo , Suhonen Matti , Rönnemaa Tapani , Laakso Markku
Published: December 2009

OBJECTIVE

To evaluate cardiovascular disease (CVD) and total mortality associated with thoracoabdominal calcifications.

RESEARCH DESIGN AND METHODS

Thoracoabdominal calcifications of native radiograms were evaluated in 833 subjects with type 2 diabetes and 1,292 subjects without diabetes, aged 45–64 years, without prior evidence of CVD. The type 2 diabetic and nondiabetic study cohorts were followed up for 18 years.

RESULTS

After adjustment for conventional risk factors, marked thoracoabdominal calcifications predicted CVD/total mortality with hazard ratio (HR) (95% CI) of 1.5 (0.8–3.0)/1.8 (1.1–2.9) in type 2 diabetic men, 3.0 (1.6–5.7)/3.1 (1.9–5.0) in type 2 diabetic women, 5.0 (2.2–12)/4.0 (2.2–7.4) in nondiabetic men, and 7.8 (1.8–34)/3.0 (1.3–7.0) in nondiabetic women and in the presence of C-reactive protein below/over 3 mg/l with HR of 2.4 (1.3–4.4)/3.0 (1.4–6.1) in type 2 diabetic subjects and 4.0 (1.5–10.8)/6.6 (2.7–16.0) in nondiabetic subjects.

CONCLUSIONS

Thoracoabdominal calcifications in native radiograms are significant predictors of CVD and total mortality, especially in type 2 diabetic and nondiabetic women with elevated high-sensitivity C-reactive protein level.
On a q-analogue of Stancu operators
Authors: Agratini Octavian
Published: December 2009

This paper is concerned with a generalization in q-Calculus of Stancu operators. Involving modulus of continuity and Lipschitz type maximal function, we give estimates for the rate of convergence. A probabilistic approach is presented and approximation properties are established.
Generalized bi-quasi-variational inequalities for quasi-pseudo-monotone type II operators on compact sets
Authors: Chowdhury Mohammad , Tan Kok-Keong
Published: December 2009

In this paper, the authors prove some existence results of solutions for a new class of generalized bi-quasi-variational inequalities (GBQVI) for quasi-pseudo-monotone type II and strongly quasi-pseudo-monotone type II operators defined on compact sets in locally convex Hausdorff topological vector spaces. In obtaining these results on GBQVI for quasi-pseudo-monotone type II and strongly quasi-pseudo-monotone type II operators, we shall use Chowdhury and Tan’s generalized version [3] of Ky Fan’s minimax inequality [7] as the main tool.
SAECG in exercise test for prediction of diabetic coronary artery disease
Authors: Bigi Mohammad , Aslani Amir , Aslani Arsalan
Published: December 2009

Signal averaged electrocardiogram (SAECG) is considered an important noninvasive indicator identifying patients at risk for ventricular arrhythmias. The aim of this study was to improve noninvasive prediction of CAD by integrating SAECG with the result of exercise tests in diabetic patients. Diabetic patients with stable angina pectoris underwent exercise testing and SAECG. Then a diagnostic score was derived that combined results of exercise testing and SAECG. A diagnostic score (0 to 2 points) was calculated by assigning 1 point for a positive exercise test result and 1 point for a positive SAECG. One hundred and seventy patients were included in the study. In patients with a score of 0, the likelihood of CAD is 18% whereas the likelihood of CAD is 95% in patients with a score of 2. Triple vessel CAD is present in 54%, 7% and only 1.5% of patients with score 2, 1 and 0 respectively. Therefore, patients with score 2 have a poor prognosis compared with score 1 or 0. A diagnostic score combining exercise testing and SAECG can distinguish patients with CAD from those without CAD with high accuracy in diabetic patients.
Effect of electrical cardioversion on stented coronary artery
Authors: Sharifkazemi Mohammad , Safai Akbar , Aslani Amir , Dehghan Seifollah , Rezakhani Ali , Rezaian Gholam
Published: December 2009

Direct current cardioversion, which produces electrical energy, is highly effective for the termination of cardiac arrhythmia and sometimes is indicated in patients with coronary artery stents due to arrhythmias. Only a few reports have been published describing the potential adverse interactions between foreign bodies and electrical cardioversion. The aim of this animal study was to investigate the acute effect of repeated external defibrillation on coronary artery tissue and adjacent myocardium at the implantation site of coronary stents. Custom-made stainless steel stents were implanted in the coronary arteries of 7 dogs. Rapid ventricular pacing was performed to induce ventricular fibrillation. Defibrillation was achieved [5 J/kg; n=2 and 8 J/kg; n=3]. In 2 animals, coronary stent was implanted but defibrillation was not performed [control group]. The animal’s heart were excised and sent for microscopic examination. The light and electron micrographs of heart muscles showed no histological and ultrastructural changes in defibrillated and control dogs. It is concluded that nickel coating provides good resistance to heat in coronary stents and repeated defibrillation does not cause histopathological changes typical of thermal injury at the implantation site of coronary stent.
Reconstructive options in severe cases of Hidradenitis suppurativa
Authors: Civelek Birol , Aksoy Kadir , Bilgen Esra , İnal Ibrahim , Sahin Unal. , Çelebioğlu Selim
Published: December 2009

Hidradenitis suppurativa is a chronic, debilitating inflammatory disease of apocrine glands characterized with abscesses and nodular lesions. The treatment of Hidradenitis suppurativa consists of topical antibacterial or antiseptic solutions, systemic antibiotics, steroids, hormonal therapy, anti-tumor necrosis factor, and various surgical procedures. In this report, we present a series of 14 cases with severe Hidradenitis suppurativa. Surgical options are reviewed to show the best outcomes in the long term. A total of 14 patients (9 female, 5 male) were treated for advanced cases of Hidradenitis suppurativa. They underwent excision of the affected regions followed by reconstruction. The reconstruction methods consisted of split-thickness skin grafting and various cutaneous and myocutaneous flaps. There was no flap necrosis or dehiscence. One patient developed contracture in the axilla, for which he underwent release surgery. There were recurrences in 4 cases. There was no limitation of the arm movements in cases with flap reconstruction. In the long-term, they were satisfied with the results. In conclusion, incision and drainage should be avoided because it is of limited value. Surgical removal of the involved tissue should be the first treatment of choice. Depending on the defect following excision, local flaps should be preferred over the grafts for recurrence prevention.
Triterpene Glycosides from the Bark of Anthocephalus Cadamba
Authors: Sahu Niranjan P. , Koike Kazuo , Jia Zhonghua , Banerjee Sukdeb , Mandal Nirup B. , Nikaido Tamotsu
Published: December 2009

Two triterpenoid glycosides, glycosides A and B were isolated from the bark of Anthocephalus cadamba and defined as 3- O-[α-L-rhamnopyranosyl]-quinovic acid-28- O-[β-D-glucopyranosyl] ester and 3- O-[β-D-glucopyranosyl]-quinovic acid-28- O-[β-D-glucopyranosyl] ester respectively.
Formamide Assisted One-Pot Conversion of Aromatic Aldehydes into the Corresponding Nitriles
Authors: Ali Sayyed Iliyas , Nikalje Milind D. , Dewkar Gajanan K. , Paraskar Abhimanyu S. , Jagtap H. S. , Sudalai A.
Published: December 2009

A single step conversion of aromatic aldehydes (1) into the corresponding nitriles (2) has been achieved in high yields using stoichiometric amounts of hydroxylamine hydrochloride, pyridine and formamide in refluxing xylene.
Benzyltriphenylphosphonium Dichromate as a Mild Reagent for Oxidation of Thiols and Sulfides
Authors: Hajipour Abdol Reza , Mallakpour Shadpour E.
Published: December 2009

Oxidation of thiols and sulfides under non-aqueous and aprotic conditions uses benzyltriphenylphosphonium dichromate (1, PhCH2PPh3)2 Cr2O7) which is very easily prepared by mixing an aqueous solution of benzyltriphenylphosphonium chloride with CrO3 in 3N HCl at room temperature. This reagent, a stable orange powder which may be stored for a month without loss of activity, is soluble in acetonitrile, chloroform and dichloromethane and slightly soluble in carbon tetrachloride, ether and hexane.
Selenium Dioxide: A Selective Oxidising Agent for the Functionalisation of Quinolines
Authors: Jnaneshwara G.K. , Shaikh Nadim S. , Bapat Neelam V. , Deshpande Vishnu H.
Published: December 2009

A simple method is described for the preparation of 1,3-dihydrofuro[4,3-b]quinolin-3-ol starting from aniline and methyl acetoacetate using selenium dioxide.
The Metal Template Effect on O-Alkylation of Hexahomotrioxacalix[3]arene with 4-(chloromethyl)pyridine to afford tris[(4-pyridylmethyl)oxy]hexahomotrioxacalix[3]arenes and their conformational studies
Authors: Yamato Takehiko , Zhang Fenglei , Sato Tomoki , Ide Seiji
Published: December 2009

O-Alkylation of the flexible macrocycle 1 with 4-(chloromethyl)pyridine gave di- and tri- O-alkylated products with cone or partial-cone conformation which ratio was affected by NaH or alkali metal carbonates used as a base.
Diels-Alder in Heterocyclic Synthesis: A Novel Synthesis of Cycloalkanopyridazinimine, 1,7-alkanothienopyridazines and 1,8-alkanophthalazines: New ring system
Authors: Al-Omran Fatima , Al-Awadhi Nouria , Elassar Abdelzaher A. , El-Khair Adel A.
Published: December 2009

Transformation of the newly synthesized alkano[ c]pyridazines and 1,7 propanothienopyridazines into 1,8-propanophthalazinones and 1,9-propanothiepinopyridazinones using [4+2] cycloaddition reaction with electron poor olefins and acetylenedicarboxylate derivatives, respectively is described.
Chemoenzymatic synthesis of (S)- and (R)-mappicines and their analogues
Authors: Das Biswanath , Madhusudhan Purushotham
Published: December 2009

The natural alkaloids, camptothecin and mappicine ketone were converted into racemic mappicine which on treatment with vinyl acetate in presence of the lipase Candida cylindracea(CCL) afforded (S)-mappicine acetate and (R)-mappicine. The acetate was chemically hydrolysed to (S)-mappicine. 9-Methoxycamtpothecin and 9-methoxymappicine ketone were similarly converted into (S)- and (R)-9-methoxymappicines.
Acid-catalysed decomposition of diazofluorene
Authors: Jose Binoy , Prathapan Sreedharan
Published: December 2009

Upon irradiation, diazofluorene undergoes reductive dimerisation to give 9,9′-bifluorene through the intermediacy of a carbene intermediate and treatment of diazofluorene with Lewis or Brönsted acids also yields the same product, but through the intermediacy of a cation intermediate.
A convenient and efficient one-pot conversion of ketones into amides under microwave irradiation using silica gel supported NaHSO4 catalyst1
Authors: Das Biswanath , Ravindranath N. , Venkataiah B. , Madhusudhan P.
Published: December 2009

A simple and rapid conversion of ketones into the corresponding amides in high yields has been developed by treatment with hydroxylamine hydrochloride under microwave irradiation in the presence of silica gel supported NaHSO4 catalyst.
Stereospecific oxygen rearrangement in the reduction of optically pure methyl mandelate to phenylethanol isomers
Authors: Angelis Yiannis S. , Smonou Ioulia
Published: December 2009

The reduction of methyl (S)-(+)-mandelate, 1, produces the expected 2-phenylethanol, 3, and the unexpected optically pure 1-phenylethanol, 6, by a stereospecific oxygen atom metathesis; which occurs through a styrene oxide intermediate, whose concentration varies with solvent polarity.
Facile and effective preparation of substituted phenylferrocene under phase transfer catalysis
Authors: Huang Guosheng , Li Bangjing , Liu Wanyi , Shi Ling , Ma Yongxiang
Published: December 2009

A series of phenylferrocene were synthesized via diazo-salts under PTC in excellent yield.
Ortho amino carbonitriles as precursor for the synthesis of some novel heterocyclic compounds
Authors: Peesapati V. , Anuradha K. , Babu S. Suresh
Published: December 2009

Synthesis and characterisation of some new [1,2,4]triazoles 8,9 and 11 starting from a useful synthon 2-amino-5,6-dihydro-4H-benzo[3,4]cyclohepta[b]thiophene-1-carbonitriles have been reported.
Solid acid induced heterocyclization under microwave irradiation. Highly selective synthesis of condensed thiazole
Authors: Heravi Majid M. , Montazeri Nasser , Rahimizadeh Mohammad , Bakavolia Mehdi , Ghassemzadeh Mitra
Published: December 2009

Condensed thiazoles are synthesized in satisfactory to good yields by the catalytic action of sulfuric acid adsorbed on silica gel under microwave irradiation in a solventless system.
Synthesis of 1-arylated derivatives of 5-fluorouracil as potential antitumor drugs
Authors: You Jinzong , Chen Shaoyuan , Wang Yanguang , Chen Yaozu
Published: December 2009

1-Aryl-5-fluorouracil derivates are synthesized by the reaction of 5-fluorouracil with diaryliodonium salts.
Sodium naphthalenide-induced conversion of 3-methoxycarbonyl-4-oxo-4H-1-benzopyran into 4-hydroxy-3-salicyloylxanthone
Authors: Bandyopadhyay Chandrakanta , Kumar Sur Ranabir , Patra Ranjan , Sen Arunabha
Published: December 2009

3-Methoxycarbonylchromenone 4 reacts with sodium naphthalenide to afford 4-hydroxy-3-salicyloylxanthone 7, via the dimer 5.
Competitive azomethine ylide cycloaddition and carbonyl-ene reaction in the treatment of 4-(alk-2-enyl)amino-2-formylpyr-2(2H)-ones with sarcosine ethyl ester
Authors: Noguchi Michihko , Akao Ryosuke , Kawamoto Hideyasu , Kuroki Yoshiaki
Published: December 2009

The thermal reaction of 4-(alk-2-enyl)amino-2-formyl-2)2H)-pyrones 4 with sarcosine ethyl ester (2) gave two isomeric pyrrol[3,4-c]pyrano[4,3-d]pyridines 5 and 6, arising from the endo-cycloaddition of the resulting S- and W- shaped azomethine ylides, and [1,3]oxazines 8 via the carbonyl-ene reaction of pyrones 4 depending on the reaction conditions.
Sm/SmI2/TiCl4(cat.) system promoted direct alkylidenating reaction of ketones with gem-dibromomethyl sulfones: A new method for preparation of alkylidene sulfones
Authors: Liu Yunkui , Zhang Yongmin , Liu Xi
Published: December 2009

Alkylidene sulfones were prepared in moderate to good yields via direct alkylidenating reaction of ketones with geminal dibromomethyl sulfones promoted by the Sm/SmI2 system in the presence of a catalytic amount of TiCl4 under mild conditions.
Potassium phosphate as a catalyst for the Knoevenagel condensation
Authors: Li Yi-Qun
Published: December 2009

The Knoevenagel condensation of carbonyl compounds with active methylene compounds proceeds smoothly in presence of potassium phosphate in commercial absolute ethanol to afford the desired products of good purity in moderate to excellent yields.
A facile synthesis of (±)-sporochnol A
Authors: Li Ying , Yuan Hao , Lu Biao , Li Yulin , Teng Dawei
Published: December 2009

A facile synthesis of (±)-sporochnol A, starting from readily available monoketal of 1,4-cyclohexanedione in high overall yield, is described. The key step is the alkylation of monoketal of 1,4-cyclohexadione with geranyl bromide mediated by chromium(II).
Samarium Diiodide Mediated Simultaneous Reduction of Nitro Group and the Azide Group in o-nitrophenylazide: A New access to 2,3-dihydro-1H-1,5-benzodiazepines
Authors: Zhong Weihui , Zhang Yongmin , Chen Xiaoyuan
Published: December 2009

o-Nitrophenylazide was reduced by SmI2 in anhydrous THF at room temperature to produce an active intermediate 2 (samarium amide), the ‘living’ double-anion in situ which reacted smoothly with ketones containing active methyl or methylene groups to afford 2,3-dihydro-1H-1,5-benzodiazepines in good yields under mild and neutral conditions.
Copper-catalysed cross coupling reaction under microwave irradiation conditions
Authors: Wang Jin-Xian , Yulai Hu Zhanxiang Liu , Wei Bangguo
Published: December 2009

Copper-catalysed cross coupling of aryl iodies with terminal alkynes was readly achieved using CuI–PPh3 as catalyst in the presence of potassium carbonate in DMF at 375W for 10 minutes under microwave irradiation.
Neighbouring group participation by amide N–H and its possible biological significance
Authors: Chandrasekhar Sosale , Gopalan S. Srinivasa
Published: December 2009

The titled phenomenon is possibly indicated in the hydrolysis of 4-(1-aziridin-1-ylmethanoyl)-5H-phenanthridin-6-one (7b); the relay version is believed to occur in organised polypeptides.
Efficient and selective epoxidation of alkenes by supported manganese porphyrin under ultrasonic irradiation
Authors: Mirkhani Valiollah , Tangestaninejad Shahram , Moghadam Majid , Yadollahi Bahram
Published: December 2009

Alkens are transformed to their corresponding epoxides in high yields and with high selectivity by ultrasonic irradiation and sodium periodate in the presence of catalytic amounts of manganese porphyrin supported on Amberlite IRA-400 ion-exchange resin (MnTPPS-Ad).
Oxidative functionalisation of ethane with hydrogen peroxide catalysed by chromic acid
Authors: Shul'pin Georgiy B. , Süss-Fink Georg , Shul'pina Lidia S.
Published: December 2009

Chromic acid catalyses efficiently (turnover numbers attain 620) the oxidation of alkanes including the very inert ethane by H2O2 or tert-BuOOH in acetonitrile solution at 60 °C; alkyl hydroperoxides, ketones (aldehydes) and alcohols are the main products.
Synthesis of 2,5- and 2,6-di-t-butyl-4-halo- or -4-methoxy-phenols using silica, lithium perchlorate and lithium bromide as neutral catalysts
Authors: Bandgar B. P. , Uppalla L. S. , Sadavarte V. S.
Published: December 2009

When a mixture of 4-halo- or 4-methoxy-phenol and excess of t-butyl chloride in the presence of neutral catalyst such as silica or lithium perchlorate or lithium bromide was refluxed, 2,5-and 2,6-di-t-butyl-4-halo or 4-methoxy phenols were obtained in good yields.
Zeolite-induced Heterocyclization: A Superior Method of Synthesis of Condensed Imidazoles
Authors: Heravi Majid M. , Montazeri Nasser , Rahmizadeh Mohammad , Bakavoli Mehdi , Ghassemzadeh Mitra
Published: December 2009

A superior method of synthesis of condensed imidazoles by the catalytic action of H–Y zeolite on the reaction of 1,2-diaminoaromatics with orthoesters is described.
Novel one pot synthesis of new pyranopyrimidines using microwaves
Authors: Kidwai M. , Venkataramanan R. , Garg Rajesh K. , Bhushan Kumar R.
Published: December 2009

A novel and one pot synthesis of pyrano[2,3-d]pyrimidines from thiobarbituric acids under microwave irradiation using basic alumina is reported.
Extraction of baicalin and characterization of its methylated derivatives. X-ray structure of 7-hydroxy-5,6-dimethoxyflavone 7-glucuronide methyl ester dihydrate
Authors: Cox Philip J. , Durham David G. , Liu Iain X. , Richards R. Michael E.
Published: December 2009

Baicalin has been isolated and four of its methyl derivatives have been characterised by IR, UV, mass, 1H and 13C NMR and one of these, 7-hydroxy-5,6-dimethoxyflavone 7-glucuronide methyl ester, was subjected to an X-ray crystallographic analysis.
Condensation of phenols with alkylcinnamates in the presence of FeCl31
Authors: Das Biswanath , Venkataiah Bollu , Ravindranath Nasi
Published: December 2009

Ferric chloride catalyses the condensation of phenols with alkylcinnamates to produce 3,4-dihydro-4-arylcoumarins.
Synthesis and Evaluation of Thiol Probes using the 6,7-dimethoxyquinoxalin-2(1H)-one fluorophore
Authors: Ghorbanian Shohreh , Mehta Lina K. , Parrick John
Published: December 2009

3-Substituted quinoxalin-2(1 H)-ones, 7 and 10, were prepared as candidate fluorescent probes for thiols and then reacted with representative thiols to give sulfides, 11–17, whose fluorescence was studied.
Interaction of metallic cations with lignins. Part 1: Stability of iron (III), manganese (II) and copper (II) complexes with phenolic lignin model compounds: Coumaric, ferulic and sinapic acids and coniferyl alcohol
Authors: Merdy Patricia , Guillon Emmanuel , Aplincourt Michael , Duomonceau Jacques
Published: December 2009

Dissociation constants of four monomeric molecular models of lignin and equilibrium constants of complex with iron (III) have been determined from potentiometric measurements
The Structure of a by-product obtained during the Chloromethylation of methyl 2-furoate
Authors: Finan Patrick A. , Lardner Caroline M. , O'Sullivan Paul T.
Published: December 2009

The structure of a crystalline by-product obtained during the chloromethylation of methyl 2-furoate 1 has been established as 1,1-bis(2′-methoxyfuroyl-5′-methylenoexy) methane 5.
Cyclizations of 2-(o-bromomethyl)benzylidene-1, 3-indandione initiated by 1-benzyl-1, 4-dihydronicotinamide and KCN: Selectivity of O-alkylation and C-alkylation
Authors: Wang Hong-Yi , Liu You-Cheng , Guo Qing-Xiang
Published: December 2009

1-Benzyl-1, 4-dihydronicotinamide (1) and KCN reacted with 2-( o-bromomethyl)-benzylidene-1, 3-indandione (2) to give 7, 12-dihydro-1-oxoindeno[3, 2-c][2]benzooxepine (3) and 1′-cyano-3′-hydro-2, 2′-spirobi[2H-indene]-1, 3-dione (4), respectively, and the selectivity of O-alkylation and C-alkylation is discussed.
Effect of Host Substituent upon Inclusion Complexation of Aliphatic Alcohols with Organoseleno β-Cyclodextrins
Authors: Liu Yu , You Chang-Cheng , Wada Takehiko , Inoue Yoshihisa
Published: December 2009

The effect of self-including host substituent upon the inclusion complexation of arylseleno β-cyclodextrins with alkanol guests has been investigated in aqueous buffer solution at 25°C, by using spectropolarimetric titrations, and the results show that the stability constants of the host–guest complexes formed are correlated with the Hammett's σ value of the host's substituent.
The Radical-Anions of Various Alkyl-Iodides
Authors: Symons Martyn C.R.
Published: December 2009

Exposure of a range of alkyl and substituted alkyl iodides in methanol glasses at 77 K to ionizing radiation gave EPR spectra assigned to the alkyl radicals. Irradiation of the pure compounds gave central features assigned to the alkyl radical-iodide ion adducts, together with outer features assigned to the primary σ*-radicals, R∸I.-. These novel results are discussed in terms of the role of the media in governing the species formed. In the case of the I–CH2CO2– and I–CH2OH derivates, species with very large hyperfine coupling to 127I nuclei are thought to be the σ*-radicals I-CH2CO2 ∸ I- and I–CH2O ∸ I-, similar to the I ∸ OMe- radicals previously studied.
Synthesis of α, β-Unsaturated Tellurolesters by the Reaction of Acylzirconocene Chlorides with ArTeI
Authors: Liang Chun-Gen , Huang Xian
Published: December 2009

α, β-unsaturated tellurolesters have been prepared in good yield by the reaction of ArTeI with acylzirconocene chlorides.
Montmorillonite K-10: A Mild, Inexpensive and Convenient Catalyst for Synthesis of Thiiranes from Oxiranes under Non-Aqueous Conditions
Authors: Mohammadpoor-Baltork Iraj , Aliyan Hamid
Published: December 2009

Montmorillonite K-10 catalyses the conversion of oxiranes to the corresponding thiiranes in the presence of thiourea efficiently and the yields obtained are excellent.
TiO2/SO42-: A Facile and Efficient Catalyst for Deprotection of 1,1-diacetates
Authors: Jin Tong-Shou , Sun Xu , Li Tong-Shuang
Published: December 2009

A facile and efficient method for the selective deprotection of 1,1-diacetates to the corresponding aldehydes in the presence of TiO2/SO42- solid superacid in excellent yield is described.
Stereoselective Synthesis of (+)-Ferruginyl Methyl Ether and (+)-Sugiyl Methyl Ether
Authors: Yonghong Gan , Xinfu Pan
Published: December 2009

A facile stereoselective synthetic procedure to (+)-ferruginyl methyl ether and (+)-sugiyl methyl ether has been developed with high stereoselectivity and overall yield.
Sodium Bismuthate Mediated Oxidation study of Hydrofluorenes
Authors: Banik Bimal K. , Ghatak Anjan , Mukhopadhyay Chhanda , Becker Frederick F.
Published: December 2009

The product distribution of sodium bismuthate mediated oxidation of several hydrofluorenes was found to depend on the structure of the starting materials and reaction conditions.
Kinetic Evidence of a Common Mechanism in the Oxidation by Chromium(vi) Complexes: Oxidation of Benzyl Alcohol
Authors: Karunakaran Chockalingam , Suresh Sadasivam
Published: December 2009

The oxidation of benzyl alcohol by dichromate and seven chromium(VI) complexes in aqueous acetic acid in the presence of perchloric acid is first order each in the oxidants, the alcohol and the mineral acid. The oxidation conforms to the isokinetic and Exner relationships and follows a common mechanism.
Electrical conductivities of manganate-permanganate mixtures: New mixed-valence manganate(VI)–(VII) salts Ba3(MnO4)4 and BaK(MnO4)2
Authors: Rosseinsky David R. , Muthakia Gerald K.
Published: December 2009

Mixed-valent salts Ba3(MnO4)4 and BaK(MnO4)2 are indicated by maximal 1:1 mixed-component conductivities, as governed by Marcus reorganisation energies.
The Stereoselective Synthesis and the Nitrogen Interconversion Studies of 2-(tert-butoxymethyl)-1-[NT-(4-methylbenzenesulfonyl) (4-methylphenoxy) imidoyl] aziridine
Authors: Dabbagh Hossein Abdoul , Modarresi-Alam Ali Reza
Published: December 2009

One-pot synthesis of the title compound (1) is achieved from tert-butyl allyl ether (2) and the N'(4-methylbenzenesulfonyl) (4-methylphenoxy) imidoyl azide (3) in high yield. The energy barrier of nitrogen interconversion of the title compound (1) was investigated by dynamic NMR. The free energies of activation (A G‡) are 11.11 kcal/mol ( Tc = 238 K) and 11.30 kcal/mol ( Tc = 242 K) in acetone-d6 and chloroform-d, respectively, and are attributed to nitrogen inversion of aziridine ring nitrogen.
Synthesis and characterization of new bis[2-(4,4-dimethyl-2-oxazolinyl)phenyl] chalcogenides: Crystal and molecular structure of bis[2-(4,4-dimethyl-2-oxazolinyl)phenyl] telluride
Authors: Apte Sandeep D. , Singh Harkesh B. , Butcher Ray J.
Published: December 2009

The synthesis and characterization of two new symmetric chalcogenides based on 4,4-dimethyl-2-phenyloxazoline substrate are described.
A convenient synthesis of novel pyrimidine analogues of o-hydroxy chalcones and pyrano [2,3-d]pyrimidines and their biological activities
Authors: Ahluwalia Vinod K. , Chopra Madhu , Chandra Ramesh
Published: December 2009

A convenient method for the synthesis of new pyrimidine analogues of chalcones by condensation of 5-acetyl-1,3-diaryl-1,2,3,4-tetrahydro-6-hydroxy-4-oxo-2-thioxopyrimidines with aromatic aldehydes in aqueous methanolic potassium hydroxide (method A) and by condensation of 1,3-diaryl-2-thiobarbituric acids with cinnamoyl chlorides in presence of triethylamine (method B) is reported which on subsequent oxidative cyclization afforded 1,3,7-triaryl-1,2,3,4-tetrahydro-4,5-dioxo-2-thioxo-5 H-pyrano[2,3- d]pyrimidines which were evaluated for their antimicrobial activity.
An Efficient and Chemoselective Method for the Oxidation of 1,4-dihydropyridines under mild and heterogeneous conditions
Authors: Zolfigol Mohammad Ali , Kiany-Borazjani Maryam , Sadeghi Majid M. , Memarian Hamid Reza , Mohammadpoor-Baltork Iraj
Published: December 2009

A combination of inorganic acidic salts or oxalic acid dihydrate and sodium nitrate in the presence of wet SiO2 was used as an effective oxidising agent for the oxidation of dihydropyridines to their corresponding pyridine derivatives at 40–50 oC with excellent yields.
Stereoselective Synthesis of (E)-2-Alkyl and 2-Phenyl-1-Silylvinyl Sulfides via Hydrozirconation of Alkyl Silyl Acetylenes
Authors: Zhong Ping , Guo Meng-Ping , Huang Xian
Published: December 2009

Hydrozirconation of alkyl silyl acetylenes gave organozirconium complexes, which reacted with aryl or alkyl sulfonyl chlorides to afford (E)-1-silylvinyl sulfides in high yields.
The Synthesis of Substituted 2-Aryl 4(3H)-Quinazolinones using Nahso3/Dma. Steric Effect upon the Cyclisation-Dehydrogenation Step
Authors: López Simón E. , Rosales Mónica E. , Urdaneta Neudo , Godoy M. Valentina , Charris Jaime E.
Published: December 2009

A number of 2-aryl substituted 6-pyrrolidino-4(3H)-quinazolinones are reported. They were synthesised in four steps starting from commercially available 5-chloro-2-nitrobenzoic acid. The key cyclisation-dehydrogenation step between 2-amino-pyrrolidinobenzamide 5 and different benzaldehydes employs NaHSO3 as the dehydrogenating agent in hot DMA. This last reaction shows a strong dependence on the position of the substituent at the aromatic ring of the benzaldehyde used. Thus, the 2-substituted benzaldehydes, in contrast to 3- and 4-substituted compounds give a poor yield of desired products or a mixture.
The Application of Cross-Linked Poly[Styrene(Iodoso Diacetate)] to the Synthesis of 1,3,4-Oxadiazoles
Authors: Huang Xian , Zhu Qing
Published: December 2009

The 2% cross-linked poly[styrene(iodosodiacetate)] has been synthesised, and has been applied effectively to the synthesis of 1,3,4-oxadiazole derivatives, and regenerated and reused for the same reaction.
Some Phenoxy-2H-Benzo[B]Pyrans
Authors: Firth John W. , Livingstone Robert
Published: December 2009

Successful methods have been found for the preparation of a wide range of phenoxy-2H-benzo-[b]pyrans.
Tandem Ene Addition/Diels-Alder Cycloaddition reactions of Methyl Linoleate with 4-Phenyl-1,2,4-Triazoline-3,5-Dione and Diethyl Azodicarboxylate
Authors: McLellan Jill F. , Mortier Roy M. , Orszulike Stefan T. , Paton R. Michael
Published: December 2009

Treatment of methyl linoleate with 4-phenyl-1,2,4-triazoline-3,5-dione affords 1:1 adducts resulting from ene addition, and 1:2 adducts formed by ene addition followed by Diels Alder cycloaddition. The corresponding reaction of diethyl azodicarboxylate yields predominantly 1:1 ene products.
Synthesis and characterization of [Bis (β-Diketonato) Uranium (Vi)] Malonamide Adducts
Authors: Kannan S.
Published: December 2009

Malonamide (L) acts as monodentate ligand in [UO2(OO)2. L] complexes (where OO = a diketonate, HTTA = thenoyltrifluoroacetone [C4H3S.CO.CH2.COCF3]; HDBM = dibenzoylmethane [C6H5CO.CH2.COC6H5]; HBTA = benzoyltrifluoroacetone [C6H5CO.CH2.CO.CF3]) and coordinating through one of its amido oxygen atoms to the uranyl ion.
Thermal reaction of Cinnamic Acid and of β-Styrylphosphonic Acid with Urea
Authors: Vuano Bruno M. , Pieroni Olga I. , Cabaleiro Mercedes C.
Published: December 2009

The thermal reaction of b-styrylphosphonic acid under experimental conditions similar to those applied to cinnamic acid and to methyl cinnamate to provide 6-phenyl-5,6-dihydrouracil, led to the formation of the novel 6-phenyl-5,6-dihydro-4-phosphorylamide-(1H,3H)-2-pyrimidinone.
Total synthesis of Orchinol
Authors: Banerjee Ajoy K. , Castillo-Meléndez Joel A. , Vera Wiliam , Azócar José A. , Laya Manual S.
Published: December 2009

An efficient route for the synthesis of the title compound is described.
Self-Assembly of a Supramolecular Cyclic Polymer Containing Pyrazine Bridged Trinuclear μ-Oxo-Ruthenium-Acetate Clusters
Authors: Toma Henrique E. , Nikolaou Sofia
Published: December 2009

The self-assembly of a novel supramolecular cyclic polymer species of general formula [Ru3O(CH3COO)6(CO)(pz)]6 has been achieved, by starting from μ-oxoruthenium cluster units in the presence of bridging pyrazine (pz) ligands.
Reactions of Dipropargyl Oxalate with Co2(Co)8, Ruco2(Co)11 and Crystal Structure of (Cooch2C2H-μ)2[Co2(Co)6]2
Authors: Zhang Yu Hua , Chen Xue Nian , Zhang Jie , Yin Yuan Qi , Wu Jiang Jin , Huang Zi Xiang
Published: December 2009

New compounds (COOCH2C2H-m)2[Co2(CO)6]2 1, (HC2CH2O(O)CCOOCH2C2H-μ) [Co2(CO)6] 2, (COOCH2C2H-μ)2[RuCo2(CO)9][Co2(CO)6] 3 and (COOCH2C2H-μ)2[RuCo2(CO)9]2 4 were prepared by the reaction of (COOCH2C2H)2 with Co2(CO)8 and RuCo2(CO)11, and the structure of 1 has been established by single-crystal X-ray diffraction methods.
Solvent-Free Three-Component Condensation reaction of Aromatic Ketones with Aliphatic Amines and Formaldehyde
Authors: Mojtahedi Mohammad M. , Saidi Mohammad R. , Sharifi Ali , Noushabadi Masoud , Bolourtchian Mohammad
Published: December 2009

A solvent-free procedure for the synthesis of several 1-aryl-2-(dialkylaminomethyl)-prop-2-en-1-ones 3 (a–e) and 4 (a–e) is reported. Reaction of arylmethyl ketones with formaldehyde and dialkylamines, such as diethyl- or dibutylamines at room temperature in silica gel produce 3 and 4 with moderate yields.
A Novel preparation of 2-Aryl-5-Methoxyoxazoles
Authors: Xia Min
Published: December 2009

2-Aryl-5-methoxyoxazoles can be synthesized by oxidation of Schiff's bases with (diacetoxyiodo) benzene in good yields under mild conditions.
A Novel reduction of O-Nitrophenoxy Compounds Promoted by Low-Valent Titanium: An Access to 2H-1,4-Benzoxazine Derivatives
Authors: Ma Yongmin , Zhang Yongmin
Published: December 2009

The intramolecular reductive cyclizations of o-nitrophenoxyacetophenones, o-nitrophenoxyacetate and o-nitrophe-noxyacetonitrile induced by the Sm/TiCl4 system were studied; 2H-1,4-benzoxazines are obtained in high yields under room temperature conditions.
Intramolecular cycloadditions of Unsaturated Nitrilimines Containing a Sulfinyl Group
Authors: Broggini Gianluigi , Bruché Luca , Farina Alessandra , Meille Stefano Valdo , Moltenia Giorgio , Zecchi Gaetano
Published: December 2009

The intramolecular 1,3-dipolar cycloaddition of nitrilimines 3 allowed the obtainment of 4H-pyrazolo[5,1-c][1,4]benzothiazine S-oxides 4 and 5.
A Novel N-Heterocyclic carbene of Platinum(Ii): Synthesis in Ionic Liquids and Crystal Structure
Authors: Hasan Masihul , Kozhevnikov Ivan V. , Siddiqui M. Rafiq H. , Steiner Alexander , Winterton Neil
Published: December 2009

A novel imidazole-type carbene of platinum(II), cis-(C2H4)(1-ethyl-3-methylimidazol-2-ylidene)PtCl2 (1), has been obtained by reacting a mixture of PtCl2 and PtCl4 with ethylene (50 atm) in the basic [EMIM]Cl/AlCl3 (1.3:1) ionic liquid at 200oC (where [EMIM]+ = 1-ethyl-3-methyl-imidazolium) and characterised by X-ray analysis.
Synthesis and reactivity of Phenyl-N-Methyl-N-Thiobenzoylcarbamate in Basic Media
Authors: Norberto Fátima , Santos Susana , Rodrigues Ana Lúcia , Pazos Javier , Hervés Pablo
Published: December 2009

Phenyl-N-methyl-N-thiobenzoylcarbamate was prepared from the reaction of thiobenzamide anion with phenylchloroformate in DMF and kinetic data obtained for the basic hydrolysis, have been interpreted in terms of a BAc2 mechanism involving general bases catalysis.
Evidence of Proton Transfer from the Hydroxy O Atom to the Imine N Atom, Crystal structure of N-Salicylideneamine-1-Tris(Hydroxymethyl)Methane
Authors: Cungen Zhang , Peizi Zu , Dan Wu , Kaibei Yu
Published: December 2009

The structural study of the Schiff base compound, N-salicylideneamine-1-tris(hydroxymethyl)-methane, confirmed that the hydroxy H atom has transferred to the imine N atom with the intramolecular O···N bond being 2.6215(19) Å.
Ammoxidation of 3-Picoline over Vanadia-Molybdena Catalysts Supported on γ-Al2O3
Authors: Chary Komandur V.R. , Bhaskar Thallada , Murthy Mamidanna R.V.S. , Seela Kothapalli Kalyana , Rao Vattikonda Venkat
Published: December 2009

Ammoxidation of 3-picoline to nicotinonitrile was carried out on V2O5-MoO3 catalysts supported on γ-alumina. The results suggest that the addition of MoO3 improves catalytic properties during ammoxidation.