Diastereoselective Carbocyclization of 1,6‐Heptadienes Triggered by Rhodium‐Catalyzed Activation of an Olefinic CH Bond
作者:Christophe Aïssa、Kelvin Y. T. Ho、Daniel J. Tetlow、María Pin‐Nó
DOI:10.1002/anie.201400080
日期:2014.4.14
studied. Reported herein is the rhodium(I)‐catalyzed rearrangement of prochiral 1,6‐heptadienes into [2,2,1]‐cycloheptane derivatives with concomitant creation of at least three stereogenic centers and complete diastereocontrol. Deuterium‐labeling studies and the isolation of a key intermediate are consistent with a group‐directed CH bond activation, followed by two consecutive migratory insertions
使用α,ω-二烯作为烯属碳氢键的官能化试剂的研究很少。本文报道了铑(I)催化的前手性1,6-庚二烯重排为[2,2,1]-环庚烷衍生物,同时产生至少三个立体中心和完整的非对映控制。氘标记研究和关键中间体的分离与基团定向的 C H 键激活,然后是两个连续的迁移插入一致,只有后一步是非对映选择性的。