2,3-Dihydroimidazo[1,2-a]pyridines: A New Class of Enantioselective Acyl Transfer Catalysts and Their Use in Kinetic Resolution of Alcohols
作者:Vladimir B. Birman、Eric W. Uffman、Hui Jiang、Ximin Li、Corey J. Kilbane
DOI:10.1021/ja0491477
日期:2004.10.1
unexplored 2,3-dihydroimidazo[1,2-a]pyridine (DHIP) has been shown to be a competent acyl transfer catalyst. Its chiral 2-phenyl derivatives obtainable in two steps from commercially available starting materials have proved to be effective acylation catalysts, giving high levels of enantioselectivity (s = 20-85) in kineticresolution of secondary benzylic alcohols. A transition state model explaining
EFFICIENT SYNTHETIC METHOD OF 18F-MEFWAY PRECURSOR
申请人:RYU Young Hoon
公开号:US20120136152A1
公开(公告)日:2012-05-31
The present invention relates a novel method for preparing an
18
F-mefway precursor. The present invention provides an efficient synthetic method of an
18
F-mefway precursor, which comprises an improved the acid chloride coupling reaction and proper reduction condition to suppress breakdown of amide bond and can obtain the precursor in high yield.