作者:Theo D. Michels、Jong Uk Rhee、Christopher D. Vanderwal
DOI:10.1021/ol8020435
日期:2008.11.6
Zincke aldehydes, which are readily available from the ring-opening reaction of pyridinium salts, are easily converted into delta-tributylstannyl-alpha,beta,gamma,delta-unsaturated aldehydes (stannyldienals) by the action of tributylstannyllithium. This reaction appears to proceed via 1,6-stannyllithium addition/elimination of lithium dialkylamide. Several stannyldienals of significant utility for
容易从吡啶鎓盐的开环反应获得的锌醛,在三丁基锡烷基锂的作用下,很容易转化为δ-三丁基锡烷基-α,β,γ,δ-不饱和醛(苯乙烯基)。该反应似乎是通过1,6-锡烷基锂加成/消除二烷基酰胺锂而进行的。通过这种途径已经制备了几种对合成多烯天然产物具有重要效用的苯乙烯亚胺,其收率适中,但是使用便宜的试剂在多克规模上是成功的。类似地,可以从相应的乙烯基酰胺中获得简单的苯乙烯烯醛和苯乙烯烯酮。