Enantioselective allylic oxidation of cycloalkenes by using Cu(II)-tris(oxazoline) complex as a catalyst
摘要:
Optically active copper(II)-tris(oxazoline) complex that was synthesized as a model compound of the active site of non-heme oxygenase, was found to catalyze allylic oxidation of cycloalkenes to give the corresponding 2-cycloalkenyl benzoates with moderate to excellent enantioselectivity (up to 93% ee) under the Kharash-Sosnovsky reaction conditions. (C) 1997 Elsevier Science Ltd.
Asymmetric Allylic C–H Alkylation via Palladium(II)/<i>cis</i>-ArSOX Catalysis
作者:Wei Liu、Siraj Z. Ali、Stephen E. Ammann、M. Christina White
DOI:10.1021/jacs.8b05668
日期:2018.8.29
asymmetric C-H alkylation of terminal olefins with a variety of synthetically versatile nucleophiles. The modular, tunable, and oxidatively stable ArSOX scaffold is key to the unprecedented broad scope and high enantioselectivity (37 examples, avg. > 90% ee). Pd(II)/ cis-ArSOX is unique in its ability to effect high reactivity and catalyst-controlled diastereoselectivity on the alkylation of aliphatic
Enantioselective allylic oxidation of cycloalkenes by using Cu(II)-tris(oxazoline) complex as a catalyst
作者:Ken-ichi Kawasaki、Tsutomu Katsuki
DOI:10.1016/s0040-4020(97)00322-0
日期:1997.5
Optically active copper(II)-tris(oxazoline) complex that was synthesized as a model compound of the active site of non-heme oxygenase, was found to catalyze allylic oxidation of cycloalkenes to give the corresponding 2-cycloalkenyl benzoates with moderate to excellent enantioselectivity (up to 93% ee) under the Kharash-Sosnovsky reaction conditions. (C) 1997 Elsevier Science Ltd.
作者:Xin Nie、Chen‐Xi Ye、Sergei I. Ivlev、Eric Meggers
DOI:10.1002/anie.202211971
日期:2022.11.25
A new strategy for the synthesis of non-racemic cycliccarbonates from abundant alcohol feedstocks is presented. The method exploits an unusual nitrene-mediated C−H oxygenation via a proposed 1,7-hydrogen atom transfer (HAT).