Current Organic Synthesis - Volume 5, Issue 1, 2008

Bismuth(III) compounds (BiX3, X = Cl, Br, NO3 and OTf etc.) are moisture- and air-tolerant Lewis acids, which have been widely applied as green catalyst in diverse organic synthesis in the past few years. This review illustrates significant advances in this field over recent five years, and mainly focuses on the bismuth-catalyzed formation of carbon-carbon, carbon-nitrogen, carbon-sulfur bonds, as well as oxidation reaction, prot Read More

Nucleophilic substitution reactions involving propargylic alcohols are important because the alkynyl group can be subsequently transformed into a variety of functional groups. This review summarizes recent direct substitution reactions of hydroxyl groups in propargylic alcohols, reactions that are highly desirable due to atom efficiency and environmental concerns.

A review dealing with the general aspects of oligosaccharide synthesis including the recent advances in protecting group strategies and anomeric control for stereoselective glycosylations, focusing on the formation of 1,2-cis-glycosides, are presented. Recent examples of the intramolecular aglycon delivery approach and of the remote effect on the stereochemistry of the new glycosidic bond are considered. In this part, upda Read More

Synthetic amino acids have particular appeal for extending our understanding of protein structure and stabilization into the realm of folded, nonbiological polymers. Chemists are now beginning to design biomimetic amino acids that can form both secondary and tertiary structures. An overview of the synthesis of non-protein amino acids recently used in the design of conformationally welldefined foldamers is discussed.