Chiral [Bis(olefin)amine]rhodium(I) Complexes – Transfer Hydrogenation in Ethanol
作者:Theo Zweifel、David Scheschkewitz、Timo Ott、Matthias Vogt、Hansjörg Grützmacher
DOI:10.1002/ejic.200900875
日期:2009.12
coupled with tropCl to give chiral bis(olefin)amines. Alternatively, 5H-dibenzo[a,d]cyclohepten-5-ylamine (tropNH2) can react with cyclohexenyl ketones to give prochiral bis(olefin)imines, which were reduced to the corresponding bis(olefin)amines. With [Rh2(μ-Cl)2(CO)4] or [Rh2(μ-Cl)2(C2H4)4], a complexation of these compounds was achieved leading to chiral rhodium complexes of the type [Rh(boa)(CO)]OTf
双(烯烃)胺(boas)是一类用于合成过渡金属配合物的新型配体,可用于各种均相催化反应。5H-二苯并[a,d]环庚烯-5-基氯(tropCl)和伯胺之间的简单直接偶联反应允许合成各种手性蟒蛇。苯丙氨酸的桦木还原得到 (2S)-2-amino-3-cyclohexa-1,4-dien-1-yl propanoate,用于合成双(烯烃)胺甲基(2S)-3-(环己-1,4-二烯基)-2-(5H-二苯并[a,d]环庚烯-5-基-氨基)丙酸酯。cyclohex-3-en-1-ylamine 与 tropCl 偶联得到 N-(cyclohex-3'-en-1'-yl)-5H-dibenzo[a,d]cyclohepten-5-ylamine,它被分离成对映异构体. 双环环己烯胺衍生物,如双环[2.2.2]oct-5-en-2-ylamine和2-(甲氧基羰基)双环[2.2。1]庚-5-烯-3-基胺同样