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。