Highly Stereoselective Synthesis of (<i>E</i>)- and (<i>Z</i>)-α-Fluoro-α,β-unsaturated Esters and (<i>E</i>)- and (<i>Z</i>)-α-Fluoro-α,β-unsaturated Amides from 1-Bromo-1-fluoroalkenes via Palladium-Catalyzed Carbonylation Reactions
作者:Jianjun Xu、Donald J. Burton
DOI:10.1021/jo050314a
日期:2005.5.1
(Z)-1-bromo-1-fluoroalkenes and the reduced products underwent similar palladium-catalyzed carboalkoxylation reactions at 70 °C, and the (E)-α-fluoro-α,β-unsaturated esters were stereospecifically obtained. This methodology was also successfully applied for the stereospecific synthesis of (Z)- and (E)-α-fluoro-α,β-unsaturated amides: the palladium-catalyzed carboamidation reaction of high E/Z and (Z)-1-bromo-1-fluoroalkenes