A Stereoselective Synthesis of 1-Substituted 2-Alkoxy-1,3-butadienes by the Fragmentation of β-Hydroxysilanes
作者:William H. Pearson、Jeffrey M. Schkeryantz
DOI:10.1055/s-1991-26460
日期:——
Condensation of 3-(9-borabicyclo[3.3.1]nonan-9-yl)-1-[(diisopropylamino)carbonyloxy]-1-trimethylsilyl-1-propene with aldehydes followed by either acidic or basic workup afforded 1-substituted (Z)- or (E)-2-[(diisopropylamino)carbonyloxy]-1,3-butadienes, respectively, via fragmentation of an intermediate ß-hydroxysilane. A similar process gave an (E)-2-(methoxy)methoxy-1,3-butadiene.
将 3-(9-硼杂双环[3.3.1]壬烷-9-基)-1-[(二异丙基氨基)羰基氧基]-1-三甲基硅基-1-丙烯与醛缩合,然后进行酸性或碱性处理,通过中间体 ß-羟基硅烷的碎裂,分别得到 1-取代的 (Z)- 或 (E)-2-[(diisopropylamino)carbonyloxy]-1,3- 丁二烯。类似的过程还可以得到(E)-2-(甲氧基)甲氧基-1,3-丁二烯。