Factors Governing and Application of the Cope Rearrangement of 3,3-Dicyano-1,5-dienes and Related Studies
作者:Ehsan Fereyduni、Alexander J. Grenning
DOI:10.1021/acs.orglett.7b01951
日期:2017.8.4
Cope and co-workers reported the [3,3] rearrangement of 3,3-dicyano-1,5-dienes in the early 1940s (“The Cope rearrangement”). However, these original substrates have remained largely unstudied until recently. Herein we explore styrene-deconjugating Cope rearrangements, a diastereoselective Cope rearrangement/deconjugative α-allylation sequence, and factors governing α- vs γ-allylation regioselectivity
Cope和他的同事报告了1940年代初期3,3-二氰基-1,5-二烯的[3,3]重排(“ The Cope重排”)。然而,直到最近,这些原始基板仍未得到研究。在本文中,我们探索了苯乙烯-去共轭Cope重排,非对映选择性Cope重排/去共轭α-烯丙基化序列,以及控制Knoevenagel加成烯丙基阴离子的α-与γ-烯丙基化区域选择性的因素。最终,这些研究使用简单的化学方法,从大量试剂中合成出了多种功能密集的聚环烷烃骨架。