作者:Stephen Castellino、James J. Sims
DOI:10.1016/s0040-4039(01)90181-9
日期:1984.1
The hetero-Diels-Alder reaction between 1,3-dimethoxy-1-trimethylsilyloxybutadiene 4, and cinnamaldehyde5, produces (±) kawain in 75% and 84% yield respectively when catalyzed by Eu(fod)3 or Yb(fod)3. When Ag(fod) is employed as the catalyst a unique condensation reaction occurs which produces two acyclic diastereomers in 72% yield.
1,3-二甲氧基-1-三甲基甲硅烷基氧基丁二烯4和肉桂醛5之间的杂Diels-Alder反应在Eu(fod)3或Yb(fod)3催化下分别产生(±)kawain,产率分别为75%和84%。当使用Ag(fod)作为催化剂时,会发生独特的缩合反应,从而以72%的收率产生两种非环状非对映异构体。