1,721,018 research outputs found
Effects of Base Association upon Geometric Orientation from 1-Phenyl-2-propyl Chloride in Potassium t-Butoxide in t-Butyl Alchol
No full textA Useful Preparation of S-Phenyl Carbothioates, Se-Phenyl Carboselenoates from Aldehydes and Mixed (O, S; O, Se) Acetals from Dialkyl Ethers
No full textSelenium Promoted Ring Closure Reactions. Synthesis of Nitrogen Containing Heterocyclic Compounds.
No full textSubstituted Azides from Selenium Promoted Deselenenylation of Azido Selenides. Glycosylation Reactions of Protected 2-Azido-2-deoxy-1-selenoglycopyranoses
No full textGlycosylation reaction using anomeric selenoxides
No full textOxidation of anomeric selenides, obtained from the radical azido phenylselenenylation of glycals, generates in situ extremely reactive glycosyl donors. When a 2-azido-2-deoxy-1-phenylselenomannoside is treated at a low temperature with perfluoro-cis-2,3-dialkyloxaziridine in the presence of a glycosyl acceptor, a (1-6)-β-linked mannopyranoside is obtained free from its α-isomer. 2-Phenyl-4,5-(3,4,6,-tri-O-methyl-1,2-di-deoxy-β-D-mannopyrano)-[2,1-d]-2-o xazoline, is isolated when 2-benzamido-2-deoxy-1-phenylselenomannoside is allowed to react with m-CPBA in dichloromethane
Reazioni di Ciclizzazione di Alchenil Ossime e di Acidi Alchenil Idrossamici Promosse da Fenilselenenil Solfato
No full textInfluenza della Natura del Nucleofilo sull'Orientamento Geometrico nelle Reazioni di beta-Eliminazione di Sistemi alfa-Fenil Attivati
No full textMicrobial reduction of 2-keto acetals as a biocatalytic approach to the enantioselective synthesis of optically active 2-hydroxy acetals
No full textThe reduction of the 2-keto acetals 1a and 1b by means of different microorganisms constitutes the biocatalytic access to optically active (46 to 100% ee) 2-hydroxy acetals, (S)-2a or (R)- and (S)-2b, representative compounds of a class of synthetically useful chiral building blocks
Iodofluorination of alkenes and alkynes promoted by iodine and 4-iodotoluene difluoride
No full text—It was found that a mixture of molecular iodine and 4-iodotoluene difluoride are useful to generate in situ the couple IF that was able to add in a Markovnikov fashion and with prevalent anti-stereoselectivity to various alkenes and alkynes
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