bluuebunny/crossref_metadata_2025_split huggingface dataset:
Phytochemicals and Biological Activities of Dipsacus Species
Authors: Zhao Ya‐Min , Shi Yan‐Ping 
Published: March 2011

AbstractThe plants of genus Dipsacus, with a wide distribution in Europe, Asia, and Africa, have been used as medicinal agents to treat several diseases, including lime disease, fibromyalgia, bone fracture, and abortion, and especially the Alzheimer's disease and cancer. A large number of studies on plants of genus Dipsacus has revealed cytoprotective properties, inhibition of HIV‐1 reverse transcriptase, antinociceptive, and antimicrobial effects, etc. This review compiles all chemical constituents isolated, mainly triterpenoids, iridoids, phenolics, and alkaloids, from the genus Dipsacus over the past few decades together with their structural features, biological activities, and structureactivity relationships.
Patagonicosides B and C, Two Antifungal Sulfated Triterpene Glycosides from the Sea Cucumber Psolus patagonicus
Authors: Careaga Valeria P. , Muniain Claudia , Maier Marta S. 
Published: March 2011

AbstractTwo new triterpene glycosides, patagonicosides B and C (2 and 3, resp.), together with the known patagonicoside A (1), have been isolated from the EtOH extract of the sea cucumber Psolus patagonicus. The structures of the new compounds were established on the basis of extensive NMR spectroscopic analysis (1H‐ and 13C‐NMR, 1H,1H‐COSY, HMBC, HSQC, TOCSY, and NOESY), HR‐ESI‐MS data, and chemical transformations. Compounds 1–3 and their desulfated analogs showed antifungal activities against the phytopathogenic fungus Cladosporium cladosporoides in a dose‐dependent fashion.
Three New Constituents from the Roots of Erythrina variegata and Their Antibacterial Activity against Methicillin‐Resistant Staphylococcus aureus
Authors: Tanaka Hitoshi , Atsumi Ikunori , Shirota Osamu , Sekita Setsuko , Sakai Eiji , Sato Masaru , Murata Jin , Murata Hiroko , Darnaedi Dedy , Chen Ih‐Sheng 
Published: March 2011

AbstractTwo new isoflavonoids, eryvarins V and W (1 and 2, resp.), and a new chromen‐4‐one derivative, eryvarin X (3), along with three known isoflavonoids, 4–6, were isolated from the roots of Erythrina variegata. Their structures were established by spectroscopic analyses. Compound 1 is a rare naturally occurring isoflavanone which possesses a OH group at C(3). Among the new compounds 1–3, 2 exhibited a potent antibacterial activity against methicillin‐resistant Staphylococcus aureus (MRSA) strains.
Chemotaxonomic Significance of the Essential Oils of 18 Ferula Species (Apiaceae) from Iran
Authors: Kanani Mohammad Reza , Rahiminejad Mohammad Reza , Sonboli Ali , Mozaffarian Valiollah , Kazempour Osaloo Shahrokh , Nejad Ebrahimi Samad 
Published: March 2011

AbstractTo evaluate the chemotaxonomic significance of the essential oils of 23 populations of 18 Iranian Ferula species, the chemical composition of the oils was investigated by GC/FID and GC/MS. Altogether, 84 constituents, representing 81.3–99.7% of the total composition of the oils, have been identified. The composition of six species of the genus, i.e., F. oopoda, F. foetida, F. behboudiana, F. diversivittata, F. galbaniflua, and F. hezarlalehzarica, has been reported for the first time. The main constituents identified were α‐terpinyl acetate (73.3%), 2,3,4‐trimethylthiophene (2; 49.0%), sabinene (75.3%), verbenone (5; 69.4%), β‐pinene (59.0–66.3%), and (Z)‐β‐ocimene (41.7%). Cluster analysis (CA) of the percentage content of the essential oil components of the Ferula species resulted in the characterization of four groups, i.e., taxa containing either i) monoterpene hydrocarbons, ii) oxygenated monoterpenes, iii) organosulfur compounds, or iv) monoterpene, sesquiterpene, and aliphatic hydrocarbons as the principal classes of compounds. Based on the results obtained, the chemical independence of F. hirtella from F. szowitsiana and of F. galbaniflua from F. gummosa at the specific level was concluded and their positions as distinct species were confirmed. The chemotaxonomic relationships among the representatives of the genus Ferula have been discussed in detail.
Environmental and Seasonal Impacts on the Chemical Composition of Satureja horvatii Šilić (Lamiaceae) Essential Oils
Authors: Lakušić Branislava , Ristić Mihailo , Slavkovska Violeta , Milenković Marina , Lakušić Dmitar 
Published: March 2011

AbstractThe chemical composition of the essential oils of Satureja horvatii Šilić from two natural habitats (Mt. Orjen and Mt. Lovćen in Montenegro) and from cultivated plants (Belgrade, Serbia) were characterized. For the latter, plants from the locus classicus, i.e., Orjenske Lokve (Mt. Orjen), were transferred to Belgrade and, after three years of cultivation, the chemical composition of their essential oils at different phenological stages was analyzed. The essential oils were obtained from the aerial parts of the plants by hydrodistillation and analyzed by GC and GC/MS. The yields and chemical compositions of the S. horvatii oils showed significant differences between the plants collected in the natural habitats and those from cultivation, as well as between the plants at different phenological stages. In the populations from the natural habitats, growing in Mediterranean conditions, the most abundant oil constituents were the phenols thymol (63.7% in the samples from Mt. Orjen) or carvacrol (68.1% in the samples from Mt. Lovćen), while the oils from the cultivated plants (Belgrade), growing in continental conditions, were dominated by linalool (up to 65.8 and 55.9% in average). The basic characteristics of the essential oil from plants at the early phenological stage (before flowering) were high percentages of linalool (37.4%), thymol (27.3%), and carvacrol (12.2%). At the stage of flowering, the percentage of linalool (56.6–57.5%) increased, while those of thymol (15.5–15.8%) and carvacrol (1.4–1.5%) significantly decreased. The essential oil of plants in the full stage of fruiting was characterized by the domination of linalool (58.4 and 65.8%) and lower percentages of thymol (7.6 and 1.3%) and carvacrol (0.7 and 0.1%). In conclusion, the oil composition of S. horvatii was found to depend on the pedoclimatic conditions of the habitat and the phenological stage of the plants.
Chemical Composition and Antimicrobial Activity of the Essential Oil of Endemic Dalmatian Black Pine (Pinus nigra ssp. dalmatica)
Authors: Politeo Olivera , Skocibusic Mirjana , Maravic Ana , Ruscic Mirko , Milos Mladen 
Published: March 2011

AbstractThe chemical composition and the antimicrobial activity of the essential oil isolated from the needles of endemic Dalmatian black pine (Pinus nigra ssp. dalmatica) from Croatia were investigated. The chemical composition of the essential oil was determined by GC and GC/MS analyses, and the main compounds identified were α‐pinene, β‐pinene, germacrene D, and β‐caryophyllene. Disc‐diffusion and broth‐microdilution assays were used for the in vitro antimicrobial screening. The Dalmatian black pine essential oil exhibited a great potential of antibacterial activity against Gram‐positive bacteria (MIC=0.03–0.50% (v/v)) and a less pronounced activity against Gram‐negative bacteria (MIC=0.12–3.2% (v/v)). The volatile compounds also inhibited the growth of all fungi tested, including yeast.
Exploring the Role of Chirality in Nucleic Acid Recognition
Authors: D'Alonzo Daniele , Guaragna Annalisa , Palumbo Giovanni 
Published: March 2011

AbstractThe study of the base‐pairing properties of nucleic acids with sugar moieties in the backbone belonging to the L‐series (β‐L‐DNA, β‐L‐RNA, and their analogs) are reviewed. The major structural factors underlying the formation of stable heterochiral complexes obtained by incorporation of modified nucleotides into natural duplexes, or by hybridization between homochiral strands of opposite sense of chirality are highlighted. In addition, the perspective use of L‐nucleic acids as candidates for various therapeutic applications, or as tools for both synthetic biology and etiology‐oriented investigations on the structure and stereochemistry of natural nucleic acids is discussed.
Stereoselective Palladium Catalyzed Allylic Phosphination
Authors: Duraud Amélie , Jacquet Olivier , Fiaud Jean‐Claude , Guillot Régis , Toffano Martial 
Published: March 2011

AbstractChiral enantiopure 2‐5‐diphenylphospholane borane 8 is an interesting nucleophile for allylic phosphination in the presence of palladium complexes to form CP bonds. A highly diastereoselective allylic phosphination reaction was realized using chiral palladium‐DACH‐naphthyl (DACH=1,2‐diaminocyclohexane) ligand as the catalyst system. The secondary phosphine‐borane complex could be classified as a NuL type nucleophile.
χ‐Octamolybdate [MoV4MoVI4O24]4−: An Unusual Small Polyoxometalate in Partially Reduced Form from Nonaqueous Solvent Reduction
Authors: Wang Longsheng , Yin Panchao , Zhang Jin , Hao Jian , Lv Chunlin , Xiao Fengping , Wei Yongge 
Published: March 2011

AbstractThe first mixed‐valent octamolybdate anion [MoV4MoVI4O24]4−, termed χ‐octamolybdate due to its shape, was obtained by partial reduction of α‐(Bu4N)4[Mo8O26] in dry acetonitrile. Single‐crystal X‐ray structure analysis revealed that the anion includes an unusual MoV4O8 cubane‐like cluster core, whose four side faces are capped by four MoO4 units to form a crosslike cluster. X‐ray photoelectron spectroscopy (XPS) and bond valence sum (BVS) calculations were carried out to validate the presence of mixed‐valent Mo centers.
Single‐Crystalline C60 Nanostructures by Sonophysical Preparation: Tuning Hollow Nanobowls as Catalyst Supports for Methanol Oxidation
Authors: Zhang Yang , Jiang Lang , Li Hui , Fan Louzhen , Hu Wenping , Wang Chunru , Li Yongfang , Yang Shihe 
Published: March 2011

AbstractLarge‐scale single‐crystalline hollow nanobowls of pure C60 were prepared by applying a sonophysical strategy in a binary organic solution. Through the simple adjustment of the concentration of the C60/m‐xylene solution and the volume ratio of m‐xylene to acetonitrile, C60 nanorings, nanoplates, nanorods, and nanowires were also selectively synthesized. The promise of the C60 hollow structures as Pt catalyst supports is heightened by the significantly enhanced catalytic activity toward methanol oxidation for a given amount of C60 used, which demonstrates their potential application in fuel cells.
ChemInform Abstract: Single‐Crystal Structure and Solide‐State NMR of Ga2‐xScxO3 (x = 0.83).
Authors: Ben Yahia Hamdi , van Wuellen Leo , Balamurugan Sarkarainadar , Rodewald Ute Ch. , Eckert Hellmut , Poettgen Rainer 
Published: March 2011

AbstractColorless needles of Ga1.17Sc0.83O3 are obtained from a K2WO4 flux during the preparation of La3Ga3Sc2O12 single crystals (Pt crucible, 1200 °C, 18 h).
ChemInform Abstract: Large Magnetic Entropy Change Near Room Temperature in La0.7(Ca0.27Ag0.03)MnO3 Perovskite.
Authors: Debnath J. C. , Zeng R. , Kim J. H. , Dou S. X. 
Published: March 2011

AbstractLa0.7 (Ca1‐xAgx)0.3MnO3 (x = 0, 0.1, 0.2, 0.7, 1) powders are prepared by solid state reaction of La2O3, CaCO3, Ag2CO3, and MnO2 (1350 °C, 24 h) and characterized by powder XRD and magnetization measurements.
ChemInform Abstract: Thermodynamic Properties and Stability of In‐Doped SrCeO3 Proton‐Conducting Ceramics.
Authors: Matskevich Nata I. , Wolf Thomas , Chupakhina Tatiana I. 
Published: March 2011

AbstractThe standard enthalpy of formation of SrCe0.5In0.5O2.75 is determined by solution calorimetry.
ChemInform Abstract: The Al‐Rich Region of the Al—Mn—Ni Alloy System. Part 2. Phase Equilibria at 620—1000 °C.
Authors: Balanetskyy S. , Meisterernst G. , Grushko B. , Feuerbacher M. 
Published: March 2011

AbstractPhase equilibria in the title system are investigated at 1000, 950, 850, 750, 700, 645, and 620 °C.
ChemInform Abstract: Porous Li4Ti5O12 Anode Material Synthesized by One‐Step Solid State Method for Electrochemical Properties Enhancement.
Authors: Lin Chi‐Yuan , Duh Jenq‐Gong 
Published: March 2011

AbstractThe title anode material is synthesized by solid state reaction of LiCl and TiCl4 in 70 wt.% oxalic acid (air, 800 °C, 10 h).
ChemInform Abstract: Oxidation of closo‐[B12Cl12]2‐ to the Radical Anion [B12Cl12]·‐ and to Neutral B12Cl12.
Authors: Boere Rene T. , Kacprzak Sylwia , Kessler Mathias , Knapp Carsten , Riebau Rainer , Riedel Sebastian , Roemmele Tracey L. , Ruehle Monika , Scherer Harald , Weber Stefan 
Published: March 2011

AbstractM[B12Cl12] (M: Li, Na, K, Cs) containing the title radical anion is synthesized in essentially quantitative yield by reaction of M2[B12Cl12] in liquid SO2 with a large excess of the strong oxidizer AsF5.
ChemInform Abstract: Design Synthesis and Photocatalytic Activity of a Novel Lilac‐Like Silver‐Vanadate Hybrid Solid Based on Dicyclic Rings of [V4O12]4‐ with {Ag7}7+ Cluster.
Authors: Hu Yan , Luo Fang , Dong Fangfang 
Published: March 2011

AbstractCompound (III) crystallizes in the triclinic space group P$\bar 1$ with Z = 1 (single crystal XRD).
ChemInform Abstract: Asymmetric Michael Addition Catalyzed by Sugar‐Based Prolinamides in Solvent‐Free Conditions.
Authors: Agarwal Jyoti , Peddinti Rama Krishna 
Published: March 2011

AbstractUse of the novel chiral sugar‐based prolinamide catalyst furnishes Michael adducts of nitroolefins and cyclohexanones in excellent yields with high diastereoselectivity and moderate enantioselectivity.
ChemInform Abstract: Enzyme‐Catalyzed C—C Bond Formation Using 2‐Methyltetrahydrofuran (2‐MTHF) as (Co)solvent: Efficient and Bio‐Based Alternative to DMSO and MTBE.
Authors: Shanmuganathan Saravanakumar , Natalia Dessy , van der Wittenboer Anne , Kohlmann Christina , Greiner Lasse , Dominguez de Maria Pablo 
Published: March 2011

AbstractThe alternative solvent can be derived from bio‐based resources such as levulinic acid and it is abiotically degraded by air.
ChemInform Abstract: Dimethyl Sulfoxide/Potassium Hydroxide: A Superbase for the Transition Metal‐Free Preparation of Cross‐Coupling Products.
Authors: Yuan Yu , Thome Isabelle , Kim Seok Hwan , Chen Duanteng , Beyer Astrid , Bonnamour Julien , Zuidema Erik , Chang Sukbok , Bolm Carsten 
Published: March 2011

AbstractReaction of O‐, N‐ and S‐nucleophiles with various aryl halides proceeds smoothly in the superbasic system KOH—DMSO.
ChemInform Abstract: Synthesis of (E)‐1‐Benzyloxy‐3‐fluoro‐1,3‐butadiene (I): A Novel Fluorinated Diene for Diels—Alder Reactions.
Authors: Hayashi Tsuyoshi , Usuki Yoshinosuke , Wakamatsu Yosuke , Iio Hideo 
Published: March 2011

AbstractThe title diene (I), a fluorinated analogue of Kitahara—Danishefsky′s diene, smoothly reacts with various dienophiles to furnish useful 1‐fluorocyclohexene derivatives in good yields.
ChemInform Abstract: Gold(I)‐Catalyzed Intramolecular Tandem Addition/Friedel—Crafts Reactions Between Acyclic Enamides and 1‐Arylalkynes.
Authors: Kozak Jennifer A. , Patrick Brian O. , Dake Gregory R. 
Published: March 2011

AbstractThe reaction allows selective formation of 1‐amido‐substituted indene derivatives.
ChemInform Abstract: Synthesis, Characterization, Antiamoebic Activity and Cytotoxicity of Novel 2‐(Quinolin‐8‐yloxy) Acetohydrazones and Their Cyclized Products (1,2,3‐Thiadiazole and 1,2,3‐Selenadiazole Derivatives).
Authors: Hayat Faisal , Salahuddin Attar , Zargan Jamil , Azam Amir 
Published: March 2011

AbstractAll intermediates (III) and products (IV) and (V) are assayed for their antiamoebic activity using HM1:IMSS strain of E.
ChemInform Abstract: Synthesis of 1,2‐Disubstituted Benzimidazoles and 2‐Substituted Benzothiazoles Catalyzed by HCl‐Treated trans‐3,5‐Dihydroperoxy‐3,5‐dimethyl‐1,2‐dioxolane.
Authors: Azarifar Davood , Khosravi Kaveh , Najminejad Zohreh , Soleimani Khandijeh 
Published: March 2011

AbstractThe reaction is carried out under mild conditions in acetonitrile at room temperature in relatively short reaction times.
ChemInform Abstract: Fast Oxy‐Cope Rearrangements of Bis‐alkynes: Competition with Central C—C Bond Fragmentation and Incorporation in Tunable Cascades Diverging from a Common Bis‐allenic Intermediate.
Authors: Pal Runa , Clark Ronald J. , Manoharan Mariappan , Alabugin Igor V. 
Published: March 2011

AbstractTreatment of benzil with terminal alkynes leads to 1,5‐hexadiyn‐3,4‐diolates which smoothly undergo oxy‐Cope rearrangement and subsequent cyclization to give cyclobutenes or cyclopentenones depending on the nature of substituents.
ChemInform Abstract: Highly Efficient Oxidative Bromination of Alkanes with the HBr‐H2O2 System in the Presence of Catalyst.
Authors: Li Yujin , Ju Jie , Jia Jianhong , Sheng Weijian , Han Liang , Gao Jianrong 
Published: March 2011

AbstractThe economical, environmentally friendly title system represents a green method for the C‐H bond activation of alkanes.
ChemInform Abstract: Direct Leuckart‐Type Reductive Amination of Aldehydes and Ketones: A Facile One‐Pot Protocol for the Preparation of Secondary and Tertiary Amines.
Authors: O'Connor Danielle , Lauria Ashley , Bondi Steven P. , Saba Shahrokh 
Published: March 2011

AbstractThe novel variant of the Leuckart reaction avoids the use of acids for the hydrolysis of possible N‐formyl derivatives of the amine products.
ChemInform Abstract: Effects of a Flexible Alkyl Chain on an Imidazole Ligand for Copper‐Catalyzed Mannich Reactions of Terminal Alkynes.
Authors: Okamura Takaaki , Asano Keisuke , Matsubara Seijiro 
Published: March 2011

AbstractIt is demonstrated that an imidazole ligand bearing a long alkyl side chain enhances the reaction of terminal alkynes, secondary amines, and aqueous formaldehyde.
ChemInform Abstract: Cross‐Coupling Reactions Between C(sp2)—H and C(sp3)—H Bonds via Sequential Dehydrogenation and C—H Insertion.
Authors: Kuninobu Yoichiro , Asanoma Daisuke , Takai Kazuhiko 
Published: March 2011

AbstractThe title formal cross‐coupling is achieved via an iridium‐catalyzed dehydrogenation of substituted primary alcohols, followed by a manganese‐ or rhenium‐catalyzed insertion of the formed aldehydes into an aromatic or olefinic C—H bond.
ChemInform Abstract: Integrated Palladium‐Catalyzed Arylation of Heavier Group 14 Hydrides.
Authors: Lesbani Aldes , Kondo Hitoshi , Yabusaki Yusuke , Nakai Misaki , Yamanoi Yoshinori , Nishihara Hiroshi 
Published: March 2011

AbstractThe integrated palladium‐catalyzed cross‐coupling reaction of aromatic iodides with primary, secondary, or tertiary group 14 hydrides can be applied to the synthesis of a variety of arylated germanes and silanes.
ChemInform Abstract: Solvent‐Free Stereoselective Synthesis of (E)‐Trifluoromethyl Imines and Hydrazones.
Authors: Carroccia Laura , Fioravanti Stefania , Pellacani Lucio , Tardella Paolo A. 
Published: March 2011

AbstractA simple synthesis of the title compounds is achieved through uncatalyzed condensation of trifluoromethyl carbonyl compounds or their hemiacetals with primary amines.
ChemInform Abstract: Reaction of Methyl Diazoacetate with Amines Catalyzed by Ru2(OAc)4Cl.
Authors: Maidanova A. V. , Bakeeva A. D. , Sultanova R. M. , Biglova R. Z. , Dokichev V. A. 
Published: March 2011

AbstractRu2(OAc)4Cl is an efficient catalyst for the reaction of primary and secondary amines with methyl diazoacetate leading regioselectively to N‐substituted glycine methyl esters.
ChemInform Abstract: Synthesis of Enamides via CuI‐Catalyzed Reductive Acylation of Ketoximes with NaHSO3.
Authors: Guan Zheng‐Hui , Zhang Zhi‐Yuan , Ren Zhi‐Hui , Wang Yao‐Yu , Zhang Xumu 
Published: March 2011

AbstractA wide range of enamides can be prepared in good to high yields.
ChemInform Abstract: Oxidation of α‐Oxo‐Oximes to Nitrile Oxides with Hypervalent Iodine Reagents.
Authors: Jen Tim , Mendelsohn Brian A. , Ciufolini Marco A. 
Published: March 2011

AbstractTreatment of α‐oxo‐oximes with Ph‐I(O‐Ac)2 allows formation of the title intermediates.
ChemInform Abstract: Novel and Efficient Synthesis of Unsymmetrical Trisulfides.
Authors: Lach Slawomir , Sliwka‐Kaszynska Magdalena , Witt Dariusz 
Published: March 2011

AbstractReaction of readily available trisulfide reagent (III) with aliphatic and aromatic thiols bearing various functional groups furnishes the title trisulfides in excellent yields and short reaction time.
ChemInform Abstract: Reactive Iron Carbonyl Reagents via Reaction of Metal Alkoxides with Fe(CO)5 or Fe2(CO)9: Synthesis of Cyclobutenediones via Double Carbonylation of Alkynes.
Authors: Beesu Mallesh , Periasamy Mariappan 
Published: March 2011

AbstractA simple and convenient method to prepare cyclobutenediones is reported.
ChemInform Abstract: Efficient Preparation of the Key Intermediate in Corey′s Tamiflu Synthesis.
Authors: Hong Zhangyong , Cui Qi , Peng Jiannan , Hu Huan , Chen Zeming 
Published: March 2011

AbstractThe simple two‐step synthesis of the compounds (VI) which starts from easily available material and may be practical for large‐scale preparations affords the title intermediate (VIc).
ChemInform Abstract: Unexpected Prins Cyclization: Iron‐Promoted Cyclization/Hydration of Alkynyl‐Dimethyl Acetals.
Authors: Zheng Deping , Gong Wanchun , Ma Zuodong , Ma Bingzhen , Zhao Xiaolong , Xie Zhixiang , Li Ying 
Published: March 2011

AbstractA novel strategy for the preparation of acyl substituted cycloheptenes is developed using an intramolecular Prins cyclization in the presence of FeCl3 as reagent.
ChemInform Abstract: Facile Chlorination of Benzyl Alcohols Using 1,8‐Diazabicyclo[5.4.0]undec‐7‐ene (DBU) and Sulfonyl Chlorides.
Authors: Kim Hyung Woo , Lee Yun‐Sang , Shetty Dinesh , Lee Hak Jeong , Lee Dong‐Soo , Chung June‐Key , Lee Myung Chul , Chung Kyoo‐Hyun , Jeong Jae Min 
Published: March 2011

AbstractThe optimized process affords the desired products, which are of interest as important intermediates in natural product synthesis, within a very short time.
ChemInform Abstract: Synthesis of Benzyl Bromides with Hexabromoacetone: An Alternative Path to Drug Intermediates.
Authors: Joseph Kara M. , Larraza‐Sanchez Isabel 
Published: March 2011

AbstractA highly reproducible protocol for the conversion of benzyl alcohols to corresponding benzyl bromides (21 examples) is developed and applied to the synthesis of omeprazole precursor (IV).
ChemInform Abstract: CeCl3‐Catalyzed Reduction of Methyl Esters of Carboxylic Acids to Corresponding Alcohols with Sodium Borohydride.
Authors: Xu Yinan , Wei Yunyang 
Published: March 2011

AbstractAn efficient, chemoselective, and general protocol for the reduction of various methyl esters to the corresponding alcohols is described.
ChemInform Abstract: Iron‐Catalyzed Synthesis of Glycine Derivatives via Carbon—Nitrogen Bond Cleavage Using Diazoacetate.
Authors: Kuninobu Yoichiro , Nishi Mitsumi , Takai Kazuhiko 
Published: March 2011

AbstractThe reaction of tertiary amines (I) with ethyl diazoacetate in the presence of iron or manganese salts leads to N‐disubstituted glycine derivatives (III).
ChemInform Abstract: The Heck—Matsuda Arylation of 2‐Hetero‐Substituted Acrylates.
Authors: De Azambuja Francisco , Correia Carlos Roque Duarte 
Published: March 2011

AbstractDepending on the solvent used, the starting acrylates are converted into the arylated products (III) or adducts (VII), which are additionally methoxylated.
ChemInform Abstract: Improved Synthesis of 3‐Nitrosalicylic Acid.
Authors: Hummel Michael , Laus Gerhard , Nerdinger Sven , Schottenberger Herwig 
Published: March 2011

AbstractNitration of salicylic acid yields a 56:44 mixture of 3‐nitro and 5‐nitrosalicylic acid which is separated by crystallization of the monopotassium salt (II).
ChemInform Abstract: A Traceless, One‐Pot Preparation of Unsymmetric Disulfides from Symmetric Disulfides Through a Repeated Process Involving Sulfenic Acid and Thiosulfinate Intermediates.
Authors: Han Minsoo , Lee Jong Tak , Hahn Hoh‐Gyu 
Published: March 2011

AbstractThe reaction of symmetric disulfides (I) with sulfuryl chloride gives sulfenyl chlorides, which are directly coupled with thiols (II) in the presence of water to yield unsymmetrical disulfides (III).