bluuebunny/crossref_metadata_2025 huggingface dataset:
Effect of Seed Treatment and Growing Condition on the Germination and Survivality of Custard Apple (Annona squamosa L.) Seedlings
Authors: Singour Nidhi , Pandey C. S. , Rai Ram Kumar , Pandey S. K. , Goutam Kamleshwar
Published: November 2023

The study was carried out during the year 2018-2019 at the Fruit Research Station Imalia and in laboratory of Department of Horticulture, College of Agriculture, Jawaharlal Nehru Krishi Vishwa Vidyalaya, Jabalpur (M.P.). The experiment was laid out in Factorial Complete Randomized Design (FCRD) replicated thrice. The experiment consist of two factor viz. A- Three growing condition (G3 - Poly house, G2-net house, G1-Open condition) and B- Six seed treatment (S1 - Water soaking, S2-Cowurine, S3-GA3, S4-KNO3, S5-Thiourea, S6-Sodium Thiosulphate) having 18 treatment combinations. Observation were recorded on various aspects like days taken to 1st germination, days taken to 50 % germination, height of seedling, girth of stem, number of leaves, fresh weight of shoot and root, dry weight of shoot and root, root length, total length of seedling, number of roots/seedling, survival percent of seedling.

On the basis of present investigation, it is concluded that among  the various seed treatments  and growing condition, the growing condition of  poly house and seed treatment with GA3 500 ppm have been proved superior with respect to germination, growth and survival of seedling. Among various treatment combinations, G3S3 treatment combination (Poly house and GA3 500ppm) found best over the rest of the treatment combinations with respect to germination parameters like minimum days taken to 1st germination (25.33) days taken to 50% germination (45.66), growth parameter like maximum - height of shoots (25.13cm), girth of stem (3.91mm) and number of leaves 18.91 at 160 DAS respectively, root length(15.13cm), number of roots/seedling(45.12), survival percentage of seedling (89.34%).The G3S4 (Polyhouse and KNO3) was found next best treatment combination in this respect.
Effect of Foliar Application of Zinc and Boron on Growth Attributes and Yield of Chickpea (Cicer arietinum L.) Varieties
Authors: Kumar Rahul , Saren Binoy Kumar , Patel Shriman Kumar
Published: November 2023

A field experiment was conducted on loamy sandy soil during the winter season at Agricultural Farm of Palli Siksha Bhavana, Visva-Bharati, Sriniketan, Birbhum, West Bengal, India to evaluate the effect of foliar application of zinc and boron on growth attributes and yield of chickpea. In this experiment, 4 varieties of chickpea (Anuradha, ICPK, JSKB and RVSJ4-102) were applied with Zn and B ((Zinc 0.5%, Boron 0.1%, Zinc 0.5%+Boron 0.1% along with control) through foliar application at branching time and pre-flowering stage. The experiment findings revealed that the Variety RVSJ4-102 gave higher plant height (20.98cm), dry matter accumulation (114.49 g/m-2), leaf area index (1.27), chlorophyll content (2.25 mg/g fresh leaf) and yield (26.28 q/ha) of chickpea compared to other variety. However, foliar application of (zinc 0.5%+boron 0.1%) had significant effect in influencing the growth attributes and yield of chickpea followed by single application of zinc 0.5% and boron 0.1% as compared to control. Foliar application of (zinc 0.5%+boron 0.1%) produced 26.47 % higher seed yield than control.  This experiment suggested that the combined single foliar application of (zinc 0.5% + boron 0.1%) prove best treatment as compared to individual application of zinc 0.5% and boron 0.1%.
Ecological Risk Factors of Strongyloides stercoralis Infection Sourrounding Desforestration Areas East Kalimantan, Indonesia
Authors: Sedionoto Blego , Firdaus Ade Rahmat , Ningsih Riyan , Elvira Vivi Filia , Syamsir  , Anamnart Witthaya
Published: November 2023

Aims: The study to assess the prevalence of Strongyloides stercoralis/ S. stercoralis infection, and to correlate environmental risk factors with the prevalence of S. stercoralis infection.

Study Design:  We perform a cross-sectional study in rural community in Muarakaman and Marangkayu district to analysis of geography, texture of soil, humidity, hookworm and strongyloides in pet, vegetation, elevation, volume rain, the number of days of rain yearly, temperature and quality of soil as clay content, organic carbon of soil and pH of soil then was correlated with prevalence of strongyloidiasis..

Place and Duration of Study: The study was carried out in rural area of Muarakaman District and Marangkayu District East Kalimantan Province, Indonesia. This research is a community based, had conducted during 2021-2022.

Methodology: This study would show the infection rates, correlation analysis between environmental risk factors and prevalence of hookworm infection with statistical analysis. We performed a cross-sectional study among 213 participants from rural community. In this study used two diagnostic methods: Kato Katz and Koga agar plate culture/KAP culture for diagnosing of S. stercoralis infection. Pearson chi-square analysis was used for study correlation between ecological risk factors S. stercoralis infection.

Results: S. stercoralis infection was found in this study; 34 (8.0%), Ecological risk factors have significant correlation and high odd ratio of prevalence of S. stercoralis infection. Ecological risk factors have significant correlation and high odd ratio of prevalence of S. stercoralis infection such as district, humidity, temperature, volume and amount day of rain organic carbon of soil, elevation of location from above a sea

Conclusion: The Ecological risk factors of the infections could be used in preventing program to reduce the prevalence of hookworm and S. stercoralis infection.
Cooperative Biocatalysis Enables Assembly of a Prenylated Indole Alkaloid
Authors: Hohlman Robert M. , Keramati Nikki R. , Sherman David H.
Published: November 2023

The hapalindole‐type metabolites have garnered significant interest due to their diverse biological activities and unique chemical structures. Recently, the biosynthesis of this family of indole alkaloids has been uncovered and shown to involve a rare biocatalytic Cope rearrangement. Previously, we demonstrated cis‐indole isonitrile C‐3 normal geranylation using FamD2. Thus, we sought to explore further the reaction potential with this substrate and dimethylallyl pyrophosphate (DMAPP) using prenyltransferases and cyclases from the hapalindole biosynthetic pathways. Here, we report a new compound derived from an unexpected biosynthetic Cope rearrangement, which expands further the scope of metabolites generated from cyanobacterial Stig cyclases.
Lentil grain quality and segregation opportunities in‐field using remote sensing
Authors: Nuttall James G. , Wallace Ashley J. , Delahunty Audrey J. , Perry Eileen M. , Clancy Alexander B. , Panozzo Joe F. , Fitzgerald Glenn J. , Walker Cassandra K.
Published: November 2023

For broad‐acre crops grown in Mediterranean‐type environments, variation in lentil (Lens culinaris) yield and quality occurs due to seasonal abiotic and biotic stresses. Because grain quality affects the price paid to growers, in‐season assessment of likely final quality using remote sensing technologies could limit economic losses by informing spatial management at harvest. For a survey of lentil crops grown in southern Australia, in 2019 and 2020, Moran's I analysis identified significant field spatial autocorrelation for the grain quality traits of grain protein concentration (GPC), grain size, and grain brightness (CIE L*, where CIE is International Commission on Illumination), indicating an opportunity for zoning at harvest. Partial least squares calibration models of observed grain quality and proximal reflectance spectra were successfully derived for grain weight (R2 = 0.80), GPC (R2 = 0.80), and CIE L* (R2 = 0.86). For late senescence, Sentinel‐2 satellite canopy reflectance, grain size was best predicted (R2 = 0.79) and GPC was poorer (R2 = 0.42). Spatial maps of fields for grain size, informed by models, could be derived and determined that for the market critical threshold (38 mg), field area that exceeded this threshold ranged between 30% and 94%. Overall, we determined that sensing technologies had utility for mapping lentil grain quality across fields, providing a potential tool for growers to selectively harvest to achieve best aggregate price based on grain quality targets. Further calibration and validation with multiple years and locations is also needed to test model stability and application to varying environments.
Outcomes of European Society of Cardiology 0/1‐h algorithm with high‐sensitivity cardiac troponin T among patients with coronary artery disease
Authors: Rana Muhammad Omer Rehman , Habib Aatika , Sheikh Muhammad Abdullah Amir , Ayub Shayan , Zubair Rafia , Rehman Ayesha , Malik Jahanzeb , Akhtar Waheed , Awais Muhammad
Published: November 2023

Objective

The European Society of Cardiology (ESC) 0/1‐h Algorithm with high‐sensitivity cardiac troponin T (hs‐cTnT) has shown promising results in risk stratification and management of patients with coronary artery disease (CAD). However, its outcomes and clinical implications in the context of developing countries remain understudied.

Methods

This cohort study aimed to evaluate the outcomes and clinical significance of the ESC 0/1‐h Algorithm in a developing country setting. A total of 3534 patients with CAD were enrolled, with 1125 in the Rule‐Out group and 2409 in the Rule‐In group. Baseline characteristics, performance metrics, primary and secondary outcomes, and predictors of Rule‐In and Rule‐Out groups were assessed.

Results

The study enrolled 3534 patients with CAD, with 1125 in the Rule‐Out group and 2409 in the Rule‐In group. The 0/1‐h Algorithm with hs‐cTnT demonstrated improved performance compared to Troponin T at Presentation. It exhibited higher sensitivity, specificity, negative predictive value, positive predictive value, and area under the curve (AUC) for risk stratification in patients with CAD. Significant differences were observed in baseline characteristics between the Rule‐Out and Rule‐In groups, including age, gender, and comorbidities. The Rule‐In group had a higher incidence of adverse cardiac events and underwent more invasive procedures compared to the Rule‐Out group. Age, gender, hypertension, diabetes, and smoking were identified as significant predictors of Rule‐In and Rule‐Out. These findings highlight the clinical significance of implementing the 0/1‐h Algorithm in the management of patients with CAD in a developing country setting.

Conclusion

The algorithm's performance, along with its ability to identify high‐risk patients and predict outcomes, highlights its potential to enhance patient care and outcomes in resource‐limited settings.
Supporting Electrolyte‐Free Electrochemical Oxidative C−H Sulfonylation and Thiocyanation of Fused Pyrimidin‐4‐Ones in an All‐Green Electrolytic System
Authors: Biswas Sumit , Ghosh Subhadeep , Das Indrajit
Published: November 2023

An electrooxidative C−H functionalization is a widely accepted route to obtain sulfur‐containing arenes and heteroarenes. However, this process often involves using non‐recyclable supporting electrolytes, (co)solvents like hexafluoroisopropanol, additives like acid, or catalysts. The use of additional reagents can increase costs and waste, reducing atom efficiency. Moreover, unlike other nitrogen‐containing heterocycles, there have only been sporadic reports of electrochemical C−H functionalization in fused pyrimidin‐4‐ones, and an electrolyte‐free process has yet to be developed. This work demonstrates that such anodic coupling reactions can be performed in an all‐green electrolytic system without using such additional electrolytes or HFIP, maintaining a high atom economy. This C−H functionalization strategy utilizes inexpensive sodium sulfinates and ammonium thiocyanate as sulfonylating and thiocyanating agents in an undivided cell at a constant current, using a mixture of CH3CN/H2O as solvent at room temperature. Thus, fused pyrimidin‐4‐ones can be selectively converted into C3‐sulfonylated and ‐thiocyanated derivatives in moderate to good yields.
ChemInform Abstract: DISTRIBUTION OF NICKEL IONS AMONG OCTAHEDRAL AND TETRAHEDRAL SITES IN NICKEL ZINC ALUMINATE SPINEL SOLID SOLUTIONS
Authors: PORTA P. , ANICHINI A. , BUCCIARELLI U.
Published: November 2023

Die Ni(+)‐Ionen in NiAl2O4 und festen NixZn1‐xA12O4‐Lösungen (x = 0.05‐0.90) sind überwiegend auf oktaedrische Plätze verteilt (Messungen der magnetischen Suszeptibilität, der Gitterparameter, der Intensitäten bestimmter Röntgenreflexionen und Untersuchungen der Reflexionsspektren).
ChemInform Abstract: MAGNETIC PROPERTIES OF THE NORMAL TEMPERATURE FORM OF CESIUM THULIUM OXIDE (CSTMO2)
Authors: URLAND W.
Published: November 2023

Unter Zugmndelegung des "Angular‐Overlap"‐Modells für f‐Elektronen und der spektrometrisch bestimmten Kristallfeldparameter des chemisch ähnlich zusammengesetzten Systems (Tm(3+) :YVO4) werden die Kristallfeldparameter der Normaltemp.‐Form von CsTmO2 abgeschätzt.
ChemInform Abstract: PARAMAGNETIC, DIAMAGNETIC AND METAL‐LIKE STATES OF DISSOLVED ELECTRONS IN METAL‐AMMONIA SOLUTIONS
Authors: SCHINDEWOLF U.
Published: November 2023

In Lösungen von Na in NH3 finden sich paramagnetische und diamagnetische Elektronen, die in Solvathüllen lokalisiert sind, sowie einen metallähnlichen Zustand bildende delokalisierte Elektronen.
ChemInform Abstract: ELECTROCHEMICAL AND SPECIFIC HEAT MEASUREMENTS ON TELLURIUM‐HALOGEN SYSTEMS
Authors: HAAG J. , VON ALPEN U. , GMELIN E. , RABENAU A.
Published: November 2023

Aus EMK‐Messungen an entsprechend zusammengesetzten galvanischen Feststoffketten mit Agl, AgBr bzw. AgCl als Hilfselektrolyten im Temp.‐Bereich 40‐170°C werden für α‐Tel, TeI4, Te2Br, TeBr4, Te3Cl2 und TeCl4 die Standard‐Bildungsenthalpien und ‐entropien abgeleitet.
ChemInform Abstract: ADSORPTION PROPERTIES OF ZEOLITIC RUTHENIUM AND OF CHROMIUM, IRON AND LANTHANUM MORDENITES. PART 1. EQUILIBRIUMS AND AFFINITIES
Authors: COUGHLAN B. , MCCANN W. A.
Published: November 2023

Die Sorption von CO2 an die Ru(3+)‐ Formen von X‐, Y‐, A‐ und L‐Zeolithen sowie die Sorption von CO2 und NH3 an mit Ru(3+), La(3+), Cr(3+) und Fe(3+) angereicherte Mordenite wird untersucht.
ChemInform Abstract: ADSORPTION PROPERTIES OF ZEOLITIC RUTHENIUM AND OF CHROMIUM, IRON AND LANTHANUM MORDENITES. PART 2. HEATS AND ENTROPIES
Authors: COUGHLAN B. , MCCANN W. A.
Published: November 2023

Die isosterischen Sorptionswärmen und ‐entropien der CO2‐Sorption an A‐, X‐, Y‐ und L‐Zeolithe und der Sorption von CO2 und NH3 an Ru(3+), La(3+), Cr(3+) und Fe(3+) enthaltende Mordenit‐Proben werden bestimmt.
ChemInform Abstract: PARTICLE ADHESION AND REMOVAL IN MODEL SYSTEMS. PART 2. MONODISPERSED CHROMIUM HYDROXIDE ON STEEL
Authors: KUO R. J. , MATIJEVIC E.
Published: November 2023

Die Adhäsion kugelförmiger Cr‐hydroxid‐Partikel von ca. 0.28 um Durchmesser an Edelstahl und ihre Wiederentfernung mit Hilfe von Spüllö‐ sungen von unterschiedlichem pH und wechselnder Ca(NO3)2‐Konzentration werden untersucht.
ChemInform Abstract: SELECTIVE SYNTHESES OF BIPENTABORANES: 1,2′‐(B5H8)2 AND 2,2′‐(B5H8)2
Authors: GAINES D. F. , JORGENSON M. W. , KULZICK M. A.
Published: November 2023

Durch Umsetzung des Bromborans (I) mit den Borverbindungen (II) bzw. (IV) erhält man die Bipentaborane (III) bzw. (V).
ChemInform Abstract: PREPARATION OF NEW DIFLUORODIOXOPHOSPHATES FROM PHOSPHORYL DIFLUORIDE OXIDE. I. REACTIONS WITH NITROGEN OXIDES
Authors: ADDOU A. , VAST P.
Published: November 2023

Difluorphosphorsäureanhydrid (I) reagiert mit Stickoxiden wie (II) und (IV) zu den Salzen (III) bzw. (V).
ChemInform Abstract: SYSTEMATICS IN THE ELECTRONIC SPECTRA OF POLAR MOLECULES. 1. PARA‐DISUBSTITUTED BENZENES
Authors: CARSEY T. P. , FINDLEY G. L. , MCGLYNN S. P.
Published: November 2023

Die Absorptions‐ und Emissionseigenschaften disubstituierter Benzole, wobei ein Substituent Elektronendonator‐,der andere Akzeptoreigenschaften hat, werden experimentell und theoretisch (CNDO/s) eingehend untersucht.
ChemInform Abstract: POLYENE CHAIN CONFORMATIONS OF 13‐DEMETHYLRETINALS
Authors: ROWAN R. III
Published: November 2023

Es wird zunächst durch hochaufgelöste 1H‐NMR nachgewiesen, daß das "cis‐II"‐Isomere von Nelson et al. tatsächlich nur ein einziges Isomeres, nämlich 1 1‐cis‐1 3‐Demethyl‐retinal ist, danach, daß dies in Lösung als planares s‐trans‐Konformeres vorliegt.
ChemInform Abstract: CATHODIC ADDITION OF ACTIVATED OLEFINS TO 1,3‐DIENES. A NEW SYNTHESIS OF Δ,ε‐UNSATURATED CARBOXYLIC ACID ESTERS AND KETONES
Authors: THOMAS H. G. , THOENNESSEN F.
Published: November 2023

Die Hydrodimerisierung von aktivierten Olefinen wie z.B. (I) in DMF oder HMPT/Isopropylalkohol läßt sich durch einen Zusatz ′von 1,3‐Dienen wie z.B. (II) unterlaufen, wobei neben den Dimeren (IV) die gemischten Hydrodimerisierungsprodukte (III) auftreten, deren Ausb. um so höher sind, je näher die Halbstufenpotentiale der Reaktionspartner beieinander liegen.
ChemInform Abstract: SUBSTITUTION OF ALLYLIC ETHERS BY GRIGNARD REAGENTS IN THE PRESENCE OF CUPROUS SALTS
Authors: NORMANT J. F. , COMMERCON A. , GENDREAU Y. , BOURGAIN M. , VILLIERAS J.
Published: November 2023

Allylische Ether reagieren mit Grignard‐Reagenzien in THF bei 15 bis 20°C in Gegenwart von Cu(I)‐Salzen (CuBr, CuCl, CuI, CuCN) unter Substitution mit oder ohne Allyl‐Umlagerung,w0bei die Orientierung der Substituion stark von den sterischen Effekten der Substrate beeinflußt wird.
ChemInform Abstract: STEREOCHEMISTRY OF TETRACYANOETHYLENE CYCLOADDITIONS TO THIOENOL ETHERS
Authors: HUISGEN R. , GRAF H.
Published: November 2023

Thioenolether (I) addieren sich an Tetracyanoethylen (II) über die Zwischenstufen (III) zu den Addukten (IV).
ChemInform Abstract: AROMATIC NUCLEOPHILIC SUBSTITUTION. 11. EFFECTS OF ORTHO SUBSTITUENTS ON THE RATES OF THE SMILES REARRANGEMENTS OF (β‐ACETYLAMINO)ETHYL 2‐X‐4‐Y‐6‐Z‐1‐PHENYL ETHERS WITH POTASSIUM HYDROXIDE IN AQUEOUS DIMETHYL SULFOXIDE
Authors: SEKIGUCHI S. , OHTSUKA I. , OKADA K.
Published: November 2023

Bei der Behandlung mit Basen lagern sich die Acetamidoethylether (I) bzw. (IV) über eine Smiles‐ Umlagerung in (III) bzw. (VI) um.
ChemInform Abstract: PHOTOLYTIC SEPARATION OF CARBON ISOTOPES IN CRYOGENIC SOLUTIONS OF CARBON DISULFIDE
Authors: FREUND S. M. , MAIER W. B. II , HOLLAND R. F. , BEATTIE W. H.
Published: November 2023

Die 206‐nm‐Photolysegeschwindigkeit von 13CS2 in flüssigem Stickstoff ist größer als die von 12CS2 während in flüssigem Krypton oder Argon das Umgekehrte der Fall ist.
ChemInform Abstract: EXCITED‐STATE ENERGY DISTRIBUTION BETWEEN DISSIMILAR CARBONYL MOLECULES PRODUCED FROM 1,2‐DIOXETANES
Authors: RICHARDSON W. H. , LOVETT M. B. , PRICE M. E. , ANDEREGG J. H.
Published: November 2023

Die bei der Thermolyse der unsymm. substituierten Dioxetane (I) und (II) entstehenden Anregungsenergien verteilen sich ungleichmäßig auf die jeweiligen beiden Carbonylbruchstücke.
ChemInform Abstract: CYCLIC PEROXIDES. 87. A STABLE BISDIOXETANE
Authors: ADAM W. , CHENG C.‐C. , CUETO O. , ERDEN I. , ZINNER K.
Published: November 2023

Bestrahlung des p‐Dioxins (I) mit einer 150 W‐Na‐Lampein Gegenwart von polymer gebundenem Rose Bengale im Sauerstoffstrom liefert das stabile Bisdioxetan (II), das thermisch (mit t1 /2 = 36 min bei 80°C ; Ea = 26 i1 kcal/mol) zu Benzoesäureanhydrid (III) zerfällt.
ChemInform Abstract: A NEW REACTION PATH LEADING FROM CHLOROPHYLL A TO CHLOROPHYLL B DERIVATIVES
Authors: JUERGENS U. , BROCKMANN J. JUN.
Published: November 2023

Bei Bestrahlung mit sichtbarem Licht in CCl4 ergibt der Trimethylester (I) das Oxidationsprodukt (IIa) als Hauptprodukt sowie das Hydroxymethyl‐ (IIb) als auch das Chlorderivat (IIc) als Nebenprodukte.
ChemInform Abstract: AN INVESTIGATION OF THE REDUCTION OF ARYLDIAZONIUM IONS BY HYDRAZINES
Authors: EVANOCHKO W. T. , SHEVLIN P. B.
Published: November 2023

Die vier unter A) im Schema angegebenen Reaktionen, die zu Produkten wie (III) und (IV) sowie (V) und (VI) verlaufen, wurden in 1H‐ und 13C‐NMR‐Spektrometern untersucht.
ChemInform Abstract: SIMPLE GENERATION OF THIOCARBONYL YLIDES
Authors: CAMERON T. B. , PINNICK H. W.
Published: November 2023

Bisher aus, nur schwierig darzustellenden, Thiadiazolinen durch N2‐Eliminierung erzeugte Ylide vom Typ =C=S(+)‐C(‐)= lassen sich leicht über Oxathiolanone vom Typ (III) bzw. (V) erhalten.
ChemInform Abstract: EXTENDED UNSATURATED CARBENES. GENERATION AND REACTION OF ALLENYLIDENE CARBENES, (R)2C:C:C:C:, WITH OLEFINS
Authors: STANG P. J. , FISK T. E.
Published: November 2023

Reaction of Allenylidene Carbenes, R2C=C=C=C:; with Olefins.
ChemInform Abstract: AMINYL OXIDES (NITROXIDES). XXX. VINYLAMINYL OXIDES. SPIN DENSITY DISTRIBUTION AND REACTIONS
Authors: AURICH H. G. , HAHN K. , STORK K.
Published: November 2023

Die Radikale (II), die aus den Nitronen (I) durch Oxidation entstehen, reagieren mit noch nicht umgesetztem (I) z.B. in Benzol oder Ether zu den Sekundärradikalen (III).
ChemInform Abstract: PROTONATION OF AROMATIC Π CARBOCATIONS IN STRONG ACID. DIRECT OBSERVATION OF PROTONATED CARBOCATIONS BY PROTON NMR SPECTROSCOPY
Authors: SMITH R. J. , PAGNI R. M.
Published: November 2023

In magischer Säure (1:1 FSO3H/SbFS in SO2) gelöstes 3‐Hydroxy‐phenalenon wird zu einem Temp.‐abhängigen Gemisch aus Kation (Ia) und Dikation (IIa) mono‐ bzw. diprotoniert.
ChemInform Abstract: REACTIONS OF PYRIDINIUM SALTS AND PYRIDINIUM BETAINES WITH HYDROGEN PEROXIDE: NOVEL RING TRANSFORMATIONS TO PYRROLES, β‐HYDROXYLATION, AND RING OPENING
Authors: KATRITZKY A. R. , RAMSDEN C. A. , ZAKARIA Z. , HARLOW R. L. , SIMONSEN S. H.
Published: November 2023

Das Pyridiniumphenolatbetain (I) wird mit Wasserstoffperoxid zu einem Gemisch aus dem Pyrrol (II) und dem Betain (III) umgesetzt.
ChemInform Abstract: REACTIONS WITH RADICAL ANIONS. II. COURSE AND SCOPE OF THE REDUCTIVE CLEAVAGE E OF CARBOXYLIC ACID ESTERS WITH LITHIUM NAPHTHALENIDE
Authors: KIRRSTETTER R. G. H.
Published: November 2023

Werden Lösungen der Ester (I) mit Li‐naphthalinid (II) versetzt, so werden neben den entsprechenden Alkoholen und Carbonsäuren (Ausb. für (Ia) 37 bzw. 47%) die Ketone (III) erhalten.
ChemInform Abstract: CHEMISTRY OF METAL HYDRIDES. XXIII. CATALYTIC HYDROGENATION OF OLEFINS USING TRANS‐BIS(TRIETHYLPHOSPHINE)HYDRIDONITRATO‐PLATINUM AS CATALYST
Authors: CLARK H. C. , BILLARD C. , WONG C. S.
Published: November 2023

Der Platin‐nitrato‐Komplex (I) erweist sich als aktiver Hydrierungskatalysator für Olefine wie (II), (IV), (VI) und (VII).
ChemInform Abstract: NEW α‐KETO ACID SYNTHON; ALKYLATION OF THE POTASSIUM DIANION OF BIS(ETHYLTHIO)ACETIC ACID
Authors: BATES G. S.
Published: November 2023

Das Dianion des Glyoxylsäurederivats (II) wird mit den Verbindungen (III) zu den Derivaten (IV) alkyliert.
ChemInform Abstract: CATALYTIC CONVERSION OF BUTADIENE INTO OCTADIENES BY NICKEL(0) COMPLEXES, MORPHOLINE, AND FORMALDEHYDE
Authors: THIVOLLE‐CAZAT J. , TKATCHENKO I.
Published: November 2023

In Gegenwart von Formaldehyd, Morpholin und Systemen aus Nickel(O)‐Komplexen und Phosphinen (Kat.) entstehen aus (I) ein 35,5 :40:7,5 :3‐Gemisch der Dimeren (IV)‐(VII) und ein 58z42‐Gemisch der Morpholine (VIII) und (IX).
ChemInform Abstract: PREPARATION OF N‐ALKYLIMINOBIS(THIOCARBALDEHYDES)
Authors: ALLENSTEIN E. , SILLE F. , STEGMUELLER B.
Published: November 2023

Die Dichlormethylamine (I) werden mit H2S zu den Bis‐thiocarbaldehyden (IIa) und (IIb) umgesetzt.
ChemInform Abstract: HALOGENATED KETENES. 32. THE CYCLOADDITION OF DICHLOROKETENE WITH SILYL ENOL ETHERS
Authors: BRADY W. T. , LLOYD R. M.
Published: November 2023

Trichloracetylchlorid (I) reagiert mit Zink zum Dichlorketen (II), das mit dem Silylenolether (III) zum Addukt (IVa) führt.
ChemInform Abstract: CYCLOPENTENOLS FROM Γ‐ALLENIC ALDEHYDES
Authors: BERTRAND M. , ROUMESTANT M.‐L. , SYLVESTRE‐PANTHET P.
Published: November 2023

Aus den Alkinolen (I) erhält man die Enolether (III), deren Umlagerungsprodukte (IV) über (V) und (VI) zu den Allenaldehyden (VII) führen.
ChemInform Abstract: TAUTOMERIC 1‐ALKYL‐2‐ARYLDIAZENES. SYNTHESIS AND SPECTROSCOPIC STUDIES
Authors: HOFER E.
Published: November 2023

Eine bequeme Synthese für die Titelverbindungen (IV) durch Umsetzung der Verbindungen (I) und (II) und Behandlung der gebildeten Produkte (III) mit konz. H2SO4 wird beschrieben.
ChemInform Abstract: NOVEL CINE SUBSTITUTION IN THE REACTION OF 2,3‐DINITROPHENOL WITH SECONDARY AMINES
Authors: MARKWELL R. E.
Published: November 2023

Das Dinitrophenol (I) reagiert mit den Aminen (II) unter Substitution zu den Amino‐nitro‐phenolen (III), von denen in einer Tabelle weitere Beispiele beschrieben werden.
ChemInform Abstract: AMINOHALOBORANE IN ORGANIC SYNTHESIS. V. AN ALDOL‐TYPE CONDENSATION OF ACETONITRILE AND PHENYLACETONITRILE WITH BENZALDEHYDES USING SECONDARY AMINODICHLOROBORANE
Authors: SUGASAWA T. , TOYODA T.
Published: November 2023

Die bisher nicht beschriebenen′ Aminopropionitrile (IV) werden in einer Dreikomponenten‐Reaktion aus Nitrilen (I), aromatischen Aldehyden (II) und Aminodichlorboranen (III)‐in Gegenwart von .T‐riethylarnin gewonnen.
ChemInform Abstract: NOVEL PALLADIUM AND RUTHENIUM CATALYZED TRANSFORMATION OF TERTIARY AMINES TO SECONDARY AMINES AND SULFIDES WITH THIOLATE ANIONS
Authors: MURAHASHI S. I. , YANO T.
Published: November 2023

Mit verschiedenen Thjolaten erhält man aus den cyclischen Aminen (I), (III) und (VI) in Gegenwart von Palladiumschwarz, Palladiumchlorid und ‐acetat oder Rutheniumtrichlorid unter Ringspaltung die Aminothioether (II), (V) bzw. (VII).
ChemInform Abstract: PREPARATION OF NEW DERIVATIVES OF CARBAMIC ACID AND UREA
Authors: LESIAK T. , NOWAKOWSKI J.
Published: November 2023

Ausgehend vom Ethan (Ia) wird auf bereits beschriebene Weise über das Säurechlorid (Ib) das neue Isocyanat (Ic) hergestellt.
ChemInform Abstract: SEVEN‐MEMBERED RING ANNELATION VIA COPE REARRANGEMENT OF β‐(2‐VINYLCYCLOPROPYL)‐αβ‐UNSATURATED KETONES: A NEW SYNTHESIS OF (.+‐.)‐β‐HIMACHALENE
Authors: PIERS E. , RUEDIGER E. H.
Published: November 2023

Das Acetal (I) liefert das Dibromcyclopropan (II), dessen Methylierung zu einem 87: 13‐Gemisch der Methylcyclopropane (IIIa) und (IIIb) führt.
ChemInform Abstract: SYNTHESIS AND PHYSICAL PROPERTIES OF A SERIES OF OPTICALLY ACTIVE SUBSTITUTED TRANS‐STILBENE OXIDES
Authors: IMUTA M. , ZIFFER H.
Published: November 2023

Die auf biologischem Wege aus entsprechenden Benzilen erhaltenen‐Diole (I) werden über die 1,3‐Dioxolane (II) in die Chlor‐acetoxy‐Verbindungen (III) und (IV) übergeführt.
ChemInform Abstract: SYNTHESIS AND CO‐TELOMERIZATION OF 4‐BROMO‐ AND 4‐CHLOROHEPTAFLUORO‐1,2‐EPOXYBUTANES
Authors: ITO T. I. , KAUFMAN J. , KRATZER R. H. , NAKAHARA J. H. , PACIOREK K. J. L.
Published: November 2023

Das Natriumsalz der fluorierten Pentancarbonsäure (I) liefert bei der Pyrolyse das Buten (IIa).
ChemInform Abstract: SYNTHESIS OF TRIS(IMINO)THIETANES; X‐RAY CRYSTAL STRUCTURE OF 2,3‐BIS‐(TERT‐BUTYLIMINO)‐4‐P‐TOLYLSULFONYLIMINOTHIETANE
Authors: L'ABBE G. , HUYBRECHTS L. , DECLERCQ J.‐P. , GERMAIN G. , VAN MEERSSCHE M.
Published: November 2023

Die Arylsulfonylisothiocyanate (II) liefern mit tert‐Butylisonitril (I) die Tris‐(imino)‐thietane (III).
ChemInform Abstract: SYNTHESIS AND CHEMISTRY OF PROSTACYCLIN
Authors: NICOLAOU K. C. , BARNETTE W. E. , MAGOLDA R. L.
Published: November 2023

Umsetzung des PGF2α‐esters (I) mit I2 gibt ein Gemisch der isomeren Iodether (IIa)+(IIb), die in die Prostacyclin‐ester (Va) bzw. (Vb) übergeführt werden.
ChemInform Abstract: SYNTHESIS OF 2‐(O‐HYDROXYPHENYL)‐ AND 2‐(P‐HYDROXYPHENYL)‐2,5‐DIHYDROFURANS FROM O‐ AND P‐HYDROXYBENZYLIDENE KETONES AND DIMETHYLSULFONIUM METHYLIDE
Authors: BRAVO P. , TICOZZI C.
Published: November 2023

Mit überschüssigem Methylid (II) bilden die ungesättigten Ketone (I) die Dihydrofurane (III).
ChemInform Abstract: UNEXPECTED BROMINATION OF AN INDOLINONIC NITROXIDE RADICAL
Authors: GRECI L.
Published: November 2023

Die Bromierung des′ Nitroxids (I) verläuft über das intermediäre Salz (II) zu den Mono‐ und Dibromderivaten (III), die sich zu den Nitroxidradikalen (IV) oxidieren und mit Fe/Essigsäure zu den entsprechenden Aminen (Ausb. 16‐38%) reduzieren lassen.
ChemInform Abstract: N‐ALKYL AND N‐ACYL DERIVATIVES OF 3(5)‐AMINOPYRAZOLE
Authors: DORGAN R. J. J. , PARRICK J.
Published: November 2023

Benzylierung des (I)‐Acetylierungsproduktes (V) gibt die Verbindungen (VIa + (VIb) + (VII).
ChemInform Abstract: POTENTIAL BIOLOGICALLY‐ACTIVE AGENTS. PART 20. SYNTHESIS OF 5‐CARBOMETHOXY‐3‐ARYLAMINOMETHYL‐2‐BENZOXAZOLINETHIONES AND RELATED PRODUCTS
Authors: VARMA R. S. , KAPOOR A.
Published: November 2023

Ausgehend vom Amin (I) wird mit CS2 das Benzoxazolinthion (II) erhalten, das auch durch Veresterung der Säure (III) dargestellt wird.
ChemInform Abstract: PHOTOCHEMICAL SYNTHESIS OF 2‐METHYLBENZOTHIAZOLES
Authors: PARAMASIVAM R. , PALANIAPPAN R. , RAMAKRISHNAN V. T.
Published: November 2023

0,02‐0,03 molare Lösungen der Thiocarbonsäureamide (I) führen bei Belichtung zu den Benzothiazolen (II).
ChemInform Abstract: UNEXPECTED FORMATION OF AMIDINO‐THIADIAZOLINES BY REACTION OF A CHLORODIAZABUTADIENE WITH THIOUREAS
Authors: FLOWERS W. T. , MOSS S. F. , ROBINSON J. F. , TAYLOR D. R. , TIPPING A. E. , HALEY M. J.
Published: November 2023

Das Chlordiazabutadien (I) reagiert mit Thioharnstoff (II) zu einem Hydrochlorid, dessen Behandlung mit kalter ethanolischer Natronlauge zum Thiadiazolin (III) führt.
ChemInform Abstract: SYNTHESIS AND KINETIC STUDY OF THE HYDROLYSIS OF 4‐CYANO‐4‐PHENYLPIPERIDINES: ACCESS TO MORPHINE ANALOGS
Authors: GERVAIS C. , ANKER D. , CHAREIRE M. , PACHECO H.
Published: November 2023

Die Benzylalkohole (I) werden nach Crossland mesyliert und die gebildeten Mesylate ohne Isolierung durch Stehenlassen in CH2C12/Et3N in die Chloride (II) übergeführt, aus denen die Nitrile (III) zugänglich sind.
ChemInform Abstract: A NEW REACTION LEADING TO MERCAPTOPYRIDINES
Authors: KROWICKI K.
Published: November 2023

Reaktion des Pyridinderivates (Ia) zuerst mit HNO, und dann mit dem Carbamat (II) führt zu den 2 Hauptprodukten (Ib) und (Ic).
ChemInform Abstract: IMPROVED SYNTHESIS OF 4,4′‐DISUBSTITUTED‐2,2′‐BIPYRIDINES
Authors: BOS K. D. , KRAAIJKAMP J. G. , NOLTES J. G.
Published: November 2023

Verschiedene Bipyridine des Typs (III) werden durch Alkylierung von (I) mit Alkylbromiden (II) unter Verwendung von Natriumamid in flüssigem Ammoniak gewonnen.
ChemInform Abstract: IODINE‐CATALYZED REARRANGEMENT OF POLYFLUORINATED 2‐(DICHLOROAMINO)PYRIDINES
Authors: BANKS R. E. , BARLOW M. G. , HORNBY J. C. , MAMAGHANI M.
Published: November 2023

N‐Dichloraniline (I), die mindenstens drei Fluorsubstituenten tragen, lagem sich spon tan oder unter Iodkatalyse zu den N (III) liefert bei der Chlorierung mit tert.‐Butylhypochlorit (IV) direkt das N nonaphthalin (V).
ChemInform Abstract: REACTIONS OF ORGANIC ANIONS. PART LXXXII. AROMATIC NUCLEOPHILIC SUBSTITUTION OF CHLORINE IN 2‐CHLOROQUINOLINES AND 1‐CHLOROISOQUINOLINE BY CARBANIONS GENERATED IN CATALYTIC TWO‐PHASE SYSTEM
Authors: JAWDOSIUK M. , LUDWIKOW M. , BEDNARSKA B.
Published: November 2023

Die Nitrile (I) kondensieren in einem Zweiphasensystem mit 2‐Chlorochinolin (II) zu den Chinolinderivaten (III).
ChemInform Abstract: SYNTHESIS OF AZACOUMARINS. III. 4‐HYDROXY‐5‐AZACOUMARIN AND 4‐HYDROXY‐7‐AZACOUMARIN
Authors: DEJARDIN J.‐V. , LAPIERE C.‐L.
Published: November 2023

Bei der Umsetzung der 3‐Hydroxy‐nicotinsäure (I) mit dem Chlorester (II) bildet sich das gemischte Anhydrid (III) mit O‐acylierter Gruppe; Kondensation von (III) mit dem Grignard‐Reagenz (IV) liefert das Derivat (V), das durch Hydrolyse und Decarboxylierung das Ethoxycarbonyl‐hydroxyazacumarin (VI) gibt; Erhitzen von (VI) mit PPA verläuft unter Abspaltung der Ester‐Gruppe zu (VII).
ChemInform Abstract: PHOTOCYCLIZATION OF 1,2‐DIARYLPYRIDINIUM CATIONS AND THE PHOTOBIS‐CYCLIZATION OF 1,2,6‐TRIARYLPYRIDINIUM CATIONS. X‐RAY CRYSTAL STRUCTURE OF 9‐PHENYL‐2,10B‐DIAZADIBENZO(FG,OP)NAPHTHACENIUM PERCHLORATE
Authors: KATRITZKY A. R. , ZAKARIA Z. , LUNT E. , JONES P. G. , KENNARD O.
Published: November 2023

Die Pyridiniumverbindung (I) cyclisiert bei der Photolyse zum Kation (II).
ChemInform Abstract: 3‐PYRIDAZONYL ACIDS AND SOME DERIVATIVES
Authors: ISMAIL M. F. , SHAMS N. A. , ABDEL RAHMAN S. E. , FATEEN A. K.
Published: November 2023

Die Dihydropyridazinone (I) reagieren mit Acrylnitril (II) in Gegenwart starker Basen zu N‐Cyanethylderivaten (III), deren alkalische Hydrolyse die Carbonsäuren (IV) liefert.
ChemInform Abstract: CONDENSATIONS WITH HYDRAZINE‐N,N′‐DICARBOXAMIDINE. XXIII. FLUORINATED β‐DIKETONES AS REACTION PARTNERS
Authors: KREUTZBERGER A. , RISSE G.
Published: November 2023

Die Kondensation der Trifluoirmethylketone (I) mit Diguanidin (II) liefert über die isolierbare Zwischenstufe (III) die Hydrazinderivate (IV) und die Heterocyclen (V).
ChemInform Abstract: THIOUREA AND PYRIMIDINE DERIVATIVES FROM CHALCONE
Authors: WEBER F. G. , PUSCH U. , BRAUER B.
Published: November 2023

Das aus Chalkon und Ammoniumisothiocyanat hergestellte Isothiocyanatopropanon (I) reagiert im Gegensatz zu Aussagen früherer Autoren mit Aminen nicht zum Dihydropyrimidin (III), sondern zum Tetrahydropyrimidinthion (II), wie durch das Fehlen der SH‐Valenzschwingung im IR‐Spektrum bewiesen wird.
ChemInform Abstract: HOST‐GUEST COMPLEXATION. 19. CYCLIC, BICYCLIC, AND TRICYCLIC POLYETHER SYSTEMS
Authors: HELGESON R. C. , TARNOWSKI T. L. , CRAM D. J.
Published: November 2023

(Ig).
ChemInform Abstract: SYNTHESIS OF STEREOCHEMICAL SYSTEMS HAVING A SILICON (OR GERMANIUM)‐PHOSPHORUS BOND
Authors: DUBAC J. , CAVEZZAN J. , MAZEROLLES P. , ESCUDIE J. , COURET C. , SATGE J.
Published: November 2023

Aus dem Isomerengemisch der Silacyclopentane (I) werden durch Alkoholyse und Reduktion sowie durch Thiolyse und Reduktion die Z‐ und E‐isomeren Silacyclopentane (III) und (V) hergestellt.
ChemInform Abstract: STUDIES ON DIAZO COMPOUNDS AND AZIDES. XXXII. SUBSTITUTION REACTIONS AT THE DIAZO CARBON OF DIAZOMETHYLPHOSPHORYL COMPOUNDS
Authors: REGITZ M. , WEBER B. , ECKSTEIN U.
Published: November 2023

Der Diazomethylphosphonsäureester (IIIc) wird mit βutyläLi zum Derivat (IV) metalliert, das nur unter ‐50°C einigermaßen haltbar ist und sich durch Umsetzung mit Benzoylbromid, Triphenylchlorosilan, mit Benzaldehyd oder Chloral bei anschließender Hydrolyse in das Acyl‐ (Va), das Silyl‐Derivat (Vb) bzw. die aldolartigen Produkte (Vc) überführen läßt. Die Ein‐ Führung einer Nitrogruppe in (IIIa‐d) erfolgt mit N205; neben den Nitrodiazoalkanen (I) werden die Salpetersäureester (II) gebildet.
ChemInform Abstract: A CONVENIENT SYNTHESIS OF MONOFLUOROGERMANES
Authors: DRAKE J. E. , GLAVINCEVSKI B. M. , RUTHERFORD K. G.
Published: November 2023

Die bei ‐196°C im Vakuum kondensierten Monobromogermane (I) reagieren bei der Behandlung mit einem Überschuß an PbO/SbF3 (1:1) zu den meist sublimierbaren, feuchtigkeitsempfindlichen Fluoriden (II).
ChemInform Abstract: RING EXPANSION AND CLEAVAGE REACTIONS OF CYCLODISTANNAZANES
Authors: HAENSSGEN D. , POHL I.
Published: November 2023

Das Diazadistannetidin (III) reagiert mit dem Acetylendicarboxylat (II) oder mit Diphenylcarbodiimid (IV) unter Ringerweiterung zu den sechsgliedrigen Heterocyclen (I) bzw. (V).
ChemInform Abstract: CHROMIUM(III) HETEROCOMPLEXES. IV. ISOTHIOCYANATE COMPLEXES OF CHROMIUM(III) WITH SOME MONODENTATE IMIDAZOLES
Authors: MISHRA A. , SINGH J. P.
Published: November 2023

Hexaisothiocyanatochromat(III) reagiert mit Imidazol beim Rückflußkochen in EtOH nach Verdünnen mit Wasser zu dem Imidazol‐Komplex (I).
ChemInform Abstract: ADDITION OF DIMETHYLCYANAMIDE TO HEXAKIS(ALKOXY)DIMOLYBDENUM COMPOUNDS
Authors: CHISHOLM M. H. , KELLY R. L.
Published: November 2023

Die reversible Addition von Dimethylcyanamid an die entsprechenden Hexakis‐[alkoxy]dimolybdän‐Verbindungen führt zu den luft‐ und feuchtigkeitsempfindlichen 1:1‐Addukten (I).
ChemInform Abstract: PREPARATION AND MONOLAYER PROPERTIES OF SURFACTANT TRIS(2,2′‐BIPYRIDINE)RUTHENIUM(II) DERIVATIVES
Authors: VALENTY S. J. , BEHNKEN D. E. , GAINES G. L. JUN.
Published: November 2023

Die Synthesen der drei Bipyridy1‐Ru(II)‐Komplexe (I)‐(III), die hydrolytisch stabile oberflächenaktive Bindungen und verschiedene Molekülladungen besitzen, sowie die Eigenschaften ihrer monomolekularen Schichten werden beschrieben Der oberflächenaktive Ligand 4,4′‐Di‐n‐nonadecylbipyridin‐(2,2′) wird durch Raney‐ Ni‐Kupplungsreaktion aus 4‐n‐Nonadecylpyridin, Alkylierungsprodukt vom 4‐Methyl‐ pyridin‐Carbanion mit n‐Octadecylchlorid (Ausb. 43%), in l4proz. Ausb. dargestellt.
ChemInform Abstract: NEW RUTHENIUM(II) SYSTEMS
Authors: CHAKRAVARTY A. R. , CHAKRAVORTY A.
Published: November 2023

Hydratisiertes Ru(III)‐chlorid reagiert mit zwei Molen der entsprechenden Arylazooxime bzw. α‐Benzilmonooxim in siedendem Ethanol unter N2 zu den Dichloro‐Ru(II)‐Komplexen (II) bzw. (IV) (keine Ausb.‐Angabe).
ChemInform Abstract: SYNTHESIS OF ETIOPORPHYRIN BY MONOPYRROLE TETRAMERIZATION
Authors: SMITH K. M. , EIVAZI F.
Published: November 2023

Aus dem Pyrrol (I) erhält man durch Kondensation in Gegenwart von Säuren isomere Tetramere mit Etioporphyrin‐Struktur (II).
ChemInform Abstract: A NEW SYNTHESIS OF SPIROVETIVANES VIA THE SPIRO ACYLOIN INTERMEDIATE
Authors: IBUKA T. , HAYASHI K. , MINAKATA H. , ITO Y. , INUBUSHI Y.
Published: November 2023

Diels‐Alder‐ Reaktion von (I) und (II) und nachfolgende Hydrolyse geben den Ketoester (IIIa), der mit Ethandithiol das Dithioacetal (IIIb) liefert.
ChemInform Abstract: MOLECULAR REARRANGEMENT IN DITERPENES
Authors: BANERJEE A. K.
Published: November 2023

Die säurekatalysierte Umlagerung des Phera anthrenderivats (I) mit Polyphosphorsäure liefert die Produkte (IIa), (IIb), (III) und (IV); mit H2SO4 werden (IIa) und das Isomere (V) erhalten.
ChemInform Abstract: THERMALLY‐INDUCED EXTRUSION OF SULFUR DIOXIDE FROM ALLYL ALKYL SULFONES. USE OF THE REARRANGEMENT FOR THE SYNTHESIS OF DIHYDROJASMONE
Authors: LITTLE R. D. , WOLF S. , SMESTAD T. , SEIKE S. C. , LINDNER L. W. JUN. , PATTON L.
Published: November 2023

Aus dem Acrolein‐Derivat (I) wird in mehreren Schritten das Sulfon (IId) und hieraus durch thermische SO2‐Eliminierung der Ester (IIIa) bzw. das Na‐Salz der Säure (IIIb) gewonnen.
ChemInform Abstract: SYNTHESIS OF ANHYDRIDES OF THE A‐SECOSTEROID SERIES WITH 10β‐METHYL OR 1‐β‐(METHOXYCARBONYL) SUBSTITUTED
Authors: SNATZKE G. , WESSLING B.
Published: November 2023

Die Dicarbonsäureanhydride (VII) werden, wie im Schema angegeben, aus den Cholestanonen (I) erhalten.
ChemInform Abstract: A NEW AND CONVENIENT SYNTHESIS OF 2‐DEOXY‐D‐RIBOSE FROM 2,4‐O‐ETHYLIDENE‐D‐ERYTHROSE
Authors: HAUSKE J. R. , RAPOPORT H.
Published: November 2023

Aus dem Aldehyd (I) entstehen nach verschiedenen Verfahren die Konden‐ sate (IIa), die zu Sulfoxiden (IIb) oxidiert werden.
ChemInform Abstract: SELECTIVE N‐ACYLATION OF KANAMYCIN A
Authors: CRON M. J. , KEIL J. G. , LIN J.‐S. , RUGGERI M. V. , WALKER D.
Published: November 2023

Kanamycin Aergibt mit Hexamethyldisilazan in siedendem Acetonitril Polytrimethylsilyl‐kanamycin A, das durch Behandlung mit N‐((2S)‐4‐Benzyloxycarbonylamino‐2‐hydroxy‐butanoyloxy)‐succinimid bei 5°C für l Std., anschließende Hydrolyse mit Wasser bei pH 2,5 und Hydrogenolyse in ca. 50%iger Ausbeute zum Amid (Ia) und in ca. 5%iger Ausbeute zum Amid (Ib) führt.
ChemInform Abstract: THE TOTAL SYNTHESIS OF (.+‐.)‐LUCIDULINE
Authors: SZYCHOWSKI J. , MACLEAN D. B.
Published: November 2023

Das Cyclohexandion (III) ‐ dargestellt aus den Estern (I) und (II) wird nach Reinshagen mit dem Nitril (IV) zu dem Derivat (V) alkyliert, aus dem mit Oxalylchlorid das Chlorolefin (VI) zugänglich ist.
ChemInform Abstract: BERBERIDIC ACID
Authors: CHINNASAMY P. , SHAMMA M.
Published: November 2023

Je nach Reaktionsbedingungen läßt sich Berberidsäure (IIa) ‐ dar‐h gestellt durch Oxidation von Berberin (I) mit HNO3 ‐ in den Diester (IIb) bzw. in die Betaine (IIc) und (IId) überführen.
ChemInform Abstract: SYNTHESIS AND STUDY OF THE BIOLOGICAL ACTIVITY OF INDOLE NUCLEOSIDES. IV. SYNTHESIS OF 1‐α‐L‐ARABINOPYRANOSIDES OF SUBSTITUTED INDOLES AND 7‐AZAINDOLES
Authors: MUKHANOV V. I. , SOKOLOVA T. N. , NIKOLAEVA T. G. , DOBRYNIN YA. V. , PREOBRAZHENSKAYA M. N.
Published: November 2023

Die Indoline (I) und (II) bzw. das Aza‐indolin (XVII) reagieren mit Arabinose (IV) und weiter mit Acetanhydrid/Pyridin zu den Nucleosiden (V), (VI) und (XIX), die zu Indolnucleosiden (VII) und (VIII), bzw. dem Azaindolnucleosid (XX) oxidiert werden können.
ChemInform Abstract: TOTAL SYNTHESIS OF (.+‐.)‐PROSTAGLANDIN D1: USE OF TRIETHYLSILYL PROTECTING GROUPS
Authors: HART T. W. , METCALFE D. A. , SCHEINMANN F.
Published: November 2023

Der Trimethylsilylether (I) reagiert mit dem Organocuprat (II) zum PGE1‐Vertreter (III), der mit Natriumborhydrid zu den Methylestern (IVa) und (IVb) reduziert wird.
ChemInform Abstract: STEREOSELECTIVE SYNTHESIS OF THE PROPOSED AMERICAN CONEFLOWER JUVENILE HORMONE MIMIC. SOME OBSERVATIONS ON THE CYCLOPROPYLCARBINYL REARRANGEMENT IN SUBSTITUTED SYSTEMS
Authors: COOKE M. P. JUN.
Published: November 2023

Aus dem Carbinol (II) erhält man mit HBr und Zinkbromid das Spaltprodukt (I), während in Eisessig die Folgeprodukte (III)‐(V) erhalten werden.
ChemInform Abstract: DIFFERENTIAL PULSE POLAROGRAPHIC DETERMINATION OF SELENIUM AND TELLURIUM AND THEIR MIXTURES
Authors: STARA V. , KOPANICA M.
Published: November 2023

Se(IV) stört (durch Ablagerung von elementarem Se auf der Oberfläche der Hg‐Tropfelektrode) die differential‐pulspolarographische Bestimmung von Te(IV).
Hybrid Integration of Au Nanoplates and Ag Nanoparticles with Controlled Nanogaps via Cu2O‐mediated Galvanic Replacement Reaction: Plasmonic Catalysis and Photothermal Conversion
Authors: Zhang Di , Sun Haoyu , Kong Haixia , Ma Yanyun , Min Yuanyuan , Wang Yi , Wang Yingying , Zheng Yiqun
Published: November 2023

Rational assembling of different noble metal nanocrystals with controlled nanogaps in one entity allows the efficient coupling of electromagnetic fields of each component and versatile manipulation over the overall physiochemical properties. In the present study, we report a stepwise synthetic strategy to hybridlike assemble Au nanoplate and Ag nanoparticles without direct physical contact. Particularly, the success of current work relies on the conformal coating of Cu2O over the Au nanoplate as an intermediate layer, followed by the in situ formation of Ag nanoparticles via the galvanic replacement reaction between Cu2O and Ag+. With the anchoring of Ag nanoparticles over the Cu2O‐wrapped Au nanoplate, the resulting hybrid nanostructures exhibit noticeable multiple plasmonic absorptions across the UV‐vis‐NIR region. The potential use as the plasmonic catalyst for current Au@Cu2O‐Ag hybrid products is validated using reduction of 4‐nitrophenol as the model reaction, where the catalytic performance is greatly improved by the UV‐vis light irradiation. They also exhibit satisfactory photothermal conversion performance under the irradiation of Xe lamp. The current work provides a niche strategy to create noble‐metal hybrid nanostructures with controlled interparticle distance and tunable plasmonic properties, could be extended to other noble metal or alloys.
Difluoromethoxylated Ketones as Building Blocks for the Synthesis of Challenging OCF2H‐Bearing N‐Heterocycles
Authors: Loison Anaïs , Hanquet Gilles , Toulgoat Fabien , Billard Thierry , Panossian Armen , Leroux Frédéric R.
Published: November 2023

Invited for this issue's Front Cover is the group of Frédéric. R. Leroux. The cover picture illustrates the potential of difluoromethoxylated ketones as building blocks for accessing challenging structures bearing the key OCF2H motif. These are represented here by a rocket, a highly technical achievement. Obviously, a parallel can be drawn between the building block strategy and a famous construction game. On the righthand side of the cover we can see the rocket heading towards a cell, highlighting the importance of fluorinated molecules in life sciences. Cover design by A. Loison. Read the full text of the article at 10.1002/ejoc.202300695.
Trusting strangers: The benefits of reciprocal self‐disclosure during online computer‐mediated communication and mediating role of interpersonal liking
Authors: Chen Qiong , Zhang Qianqian , Zhao Siping , Li Caina
Published: November 2023

Reciprocal self‐disclosure has reportedly been associated with increased interpersonal trust. However, existing research mainly focuses on online disclosure between acquaintances and overlooks the types of reciprocal disclosure, especially in the initial interactions between strangers communicating online. This study aimed to investigate how three types of reciprocal self‐disclosure (turn‐taking reciprocity, extended reciprocity and non‐reciprocity) contribute to trust and the mechanism of positive interpersonal liking, and whether any effect was instant and stable or increased across two interactions during computer‐mediated communication (CMC). Participants were assigned to one of the three reciprocal disclosure conditions and engaged in online interactions. Self‐reported and behavioural results demonstrated higher levels of interpersonal trust and liking in the second interaction phase than in the first across all conditions. The turn‐taking reciprocity condition showed higher interpersonal trust than did the extended condition, and higher interpersonal liking than did the extended and non‐reciprocity conditions; this effect was apparent in both interactions. These findings help us understand the relationship between online self‐disclosure and interpersonal trust, suggesting that certain patterns of communication with strangers (e.g., turn‐taking reciprocity) may foster more positive social outcomes during CMC over time, while demonstrating the importance of immediacy in synchronous conversations.
The Effect of Intermolecular Interactions between Aromatic Ring‐Containing Insulators and Semiconductors in Pentacene Thin‐Film Transistors
Authors: Zhu Jiufu , Li Shizhang , Bai Dacheng , Pan Dongye , Zou Jiawei , Zheng Yan , Zhang Bowen , Hao Xiaojuan , Wang Wei , Shi Zuosen , Cui Zhanchen
Published: November 2023

Mobility is an important parameter to estimate the performance of organic thin‐film transistors, one of the key factors affecting the mobility is the first several semiconductors molecular layers near the insulator surface. A strategy is proposed to introduce aromatic‐rings in the gate insulating layer to modulate the growth of pentacene, thus a series of aryl group containing polymers by reversible‐addition‐fragmentation chain‐transfer polymerization is synthesized for the preparation of organic thin‐film transistor insulators. The semiconductor layer is evaporated on the polymer insulators at room temperature. As the inducing function of the aromatic ring, greater weak interactions between dielectric materials and semiconductors by simulation, which makes the initial pentacene layer weak epitaxial growth, therefore pentacene could form better morphology, especially larger crystal domains and uniform thin‐film continuity. The results show that precision design and synthesis of polymer insulator layers provide new methods to achieve high performance of organic thin‐film transistors with easier fabricating process.