Synthesis of 4,4-difluoroglycosides using ring-closing metathesis
作者:Christophe Audouard、John Fawcett、Gerry A. Griffiths、Jonathan M. Percy、St�phane Pintat、Clive A. Smith
DOI:10.1039/b313731g
日期:——
direct sequence involving ring-closingmetathesis and indium-mediated difluoroallylation with 1-bromo-1,1-difluoropropene in water. Two protecting group strategies were explored, one to allow protection of the primary C-6 hydroxyl group throughout the sequence, while the second was intended to allow deprotection after RCM and before dihydroxylation. The benzyl ether could be used in the first role, and