作者:Stephen F. Martin、David A. Kummer、Jehrod B. Brenneman
DOI:10.1055/s-2004-829095
日期:——
A new method for preparing α-branched enonesfrom carboxylic acid derivatives is reported. The procedure commenced by the reaction of N,O-dimethylamides with a masked acyl anionequivalent, followed by the addition of (trimethylsilyl-methyl)cerium dichloride to give intermediates that undergo Lewis acid mediated olefination to produce enol ethers that are then hydrolyzed to afford simple α-branched