Palladium(II)-promoted cross-coupling of 4-alkenyl-2-azetidinones with organomercurials
作者:Richard C. Larock、Shuji Ding
DOI:10.1021/jo00060a024
日期:1993.4
The palladium-promoted cross-coupling of 4-alkenyl-2-azetidinones with aryl and vinylic mercurials provides 5-aryl-3-alkenamides and 3,6-alkadienamides, respectively. Modest to excellent stereoselectivity for formation of the new carbon-carbon double bond is observed. The reaction becomes catalytic in palladium when cupric chloride and oxygen are introduced. This process constitutes the first organometallic ring opening of 2-azetidinones to acyclic unsaturated amides.