Carbon monoxide-driven osmium catalyzed reductive amination harvesting WGSR power
作者:Klim O. Biriukov、Mikhail M. Vinogradov、Oleg I. Afanasyev、Dmitry V. Vasilyev、Alexey A. Tsygankov、Maria Godovikova、Yulia V. Nelyubina、Dmitry A. Loginov、Denis Chusov
DOI:10.1039/d1cy00695a
日期:——
First osmium-catalyzed reductive amination under the water gas–shift reaction conditions was developed. Proposed catalytic system demonstrates high performance even at the catalyst loading as low as 0.0625 mol%.
Brønsted Acid Catalyzed Reductive Amination with Benzothiazoline as a Highly Efficient Hydrogen Donor
作者:Takahiko Akiyama、Chen Zhu
DOI:10.1055/s-0030-1260539
日期:2011.6
Reductive amination of aldehyde and amine proceeded smoothly in the presence of benzothiazoline as efficient hydrogen source by means of 20 mol% trifluoroacetic acid to give the corresponding amines in excellent yields. Hydrogen-donor abilities of benzothiazoline, benzimidazoline, and benzoxazoline were compared.
A 2-(chloro-substituted benzylamino)-6-dibutylamino- fluoran compound represented by the general formula:
一种由通式表示的 2-(氯代苄基氨基)-6-二丁氨基-芴化合物:
Molecular iodine catalyzed transfer hydrogenation: reduction of aldimines, ketimines, and α-imino esters
作者:Prabhakar Bachu、Chen Zhu、Takahiko Akiyama
DOI:10.1016/j.tetlet.2013.05.071
日期:2013.7
An efficient and practical protocol for the reduction of aldimines, ketimines, and alpha-imino esters in the presence of catalytic amount of molecular iodine with Hantzsch ester at ambient temperature afforded the corresponding amines in excellent yields. (C) 2013 Elsevier Ltd. All rights reserved.
Transfer hydrogenation of imines with carboxyl-tailed benzothiazoline as readily removable hydrogen donor
作者:Chen Zhu、Takahiko Akiyama
DOI:10.1016/j.tetlet.2011.11.061
日期:2012.1
A benzothiazoline bearing 4-carboxyphenyl group at 2-position was developed as an efficient hydrogen donor for the transfer hydrogenation reaction. Introduction of the carboxyl group significantly facilitated the removal of the residual benzothiazoline and benzothiazole by washing with aqueous basic solution. The present approach provides a convenient and straightforward access to various amines with broad substrate scope and in good yields. (C) 2011 Elsevier Ltd. All rights reserved.