Stereoselective Construction of Cyclic Ethers Using a Tandem Two-Component Etherification: Elucidation of the Role of Bismuth Tribromide
作者:P. Andrew Evans、Jian Cui、Santosh J. Gharpure、Robert J. Hinkle
DOI:10.1021/ja036439j
日期:2003.9.1
important area of synthetic interest, particularly given the ubiquity of C-glycoside derivatives in natural and unnatural pharmacologically important agents. This work describes a series of intramolecularetherification reactions of delta-trialkylsilyloxy aldehydes and ketones using catalytic bismuth tribromide and various trialkylsilyl nucleophiles for the construction of cis- and trans-2,6-di- and trisubstituted