Journal of the American Chemical Society p. 8952 - 8965 (1994)
Update date:2022-09-26
Topics:
Willoughby, Christopher A.
Buchwald, Stephen L.
The asymmetric hydrogenation of imines with a chiral titanocene catalyst derived from Brintzinger's ansatitanocene complex 1 proceeds to afford amines with good to excellent enantioselectivity. The catalyst is particularly effective for the reduction of cyclic imines. For these substrates enantiomeric excesses from 95 to 99% were achieved. For acyclic imines lower enantiomeric excesses were observed. The reason for this is likely due to the fact that the acyclic imines are mixtures of anti and syn isomers which interconvert during the reaction. The catalyst was found to be tolerant of many functional groups found in organic synthesis. Thus the reaction represents an effective method for the synthesis of chiral cyclic amines.
View MoreJinan Trio PharmaTech Co., Ltd
Contact:86-531-88811783;+(0)13153010282
Address:2766 Yingxiu Road, Jinan High-Tech Zone, China
Hunan Shineway Enterprise Co., Ltd.
Contact:+86-731-86303875
Address:118, Huanghua International Airport Road, Huanghua Town, Changsha, Hunan 410137, China
Xi'an Costrong Pharmaceutical Co., Ltd.
Contact:029- 68576496
Address:Room 2004,Shuibao Building,No.190,South Erhuan Rd, Yanta District,Xi'an,Shaan Xi,China
Nanjing Norris Pharm Technology Co., Ltd.
Contact:+86-13901585132
Address:2 Qiande Road, Jiangning sciencepark Hi-Tech Zone, Nanjing, P.R.China
Beijing Zhongshuo Pharmaceutical T & D Co.,Ltd
Contact:0086-10-64430626
Address:ea No 16, HEPINGLI,DONGCHENG DISTRICT,BEIJING,P.R.CHINA.
Doi:10.1021/ja00155a023
(1995)Doi:10.1002/hlca.19950780221
(1995)Doi:10.1016/0022-328X(95)05450-4
(1995)Doi:10.1021/om00009a015
(1995)Doi:10.1002/jhet.720
(2012)Doi:10.1021/ja00154a002
(1995)