[2,3]-Wittig sigmatropic rearrangement of crotyl propargyl ether system. An emerging tool for control of acyclic stereochemistry
作者:Kōichi Mikami、Ken-Ichi Azuma、Takeshi Nakai
DOI:10.1016/0040-4020(84)80013-7
日期:1984.1
The [2,3]-Wittig rearrangement of properly designated (E)- and (Z)-crotyl propargyl ether system has been shown to exhibit a remarkably high degree of threo- and erythro -selection, respectively, and the stereochemical outcomes are discussed on mechanistic grounds. Some useful transformations of the rearrangement product are also described within the context of the formal total synthesis of (±)-oudemansin
在[2,3] -Wittig重排的正确指定(ë) -和(ž -crotyl炔丙基醚系统已被证明表现出显着高的程度的)苏型-和赤-selection,分别与立体化学的结果进行了讨论基于机械原理。在(±)-oudemansin的正式全合成中还描述了重排产物的一些有用的转化。此外,在α-甲基巴豆基对应物的反应中,与(E)-烯键的排他性形成一起,维持了高水平的非对映选择性。