Synthesis of Planar Chiral Cobalt Metallocenes by Microwave-Assisted Diastereoselective Complexation
作者:Caroline J. Taylor、Majid Motevalli、Christopher J. Richards
DOI:10.1021/om060015r
日期:2006.5.1
Ether- and ester-linked diynes were readily synthesized in two steps by starting from secondary terminal propargylic alcohols. On either heat- or microwave-assisted reaction of the diynes with cyclopentadienylcobalt dicarbonyl, new planar chiral (η5-cyclopentadienone)(η5-cyclopentadienyl)cobalt metallocenes were formed with diastereomeric ratios of up to 5:1. For both the ether and ester series the