Molecular iodine catalyzed transfer hydrogenation: reduction of aldimines, ketimines, and α-imino esters
摘要:
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.
into N−H bonds cocatalyzed by chiral phosphoricacid. Nitrogen dopants played a crucial role in both catalytic activity and enantioselectivity while almost no catalysis was observed with Rh nanoparticles immobilized on supports without nitrogen dopants. Various types of chiral α-amino acid derivatives were synthesized in high yields with high enantioselectivities and NCI-Rh could be reused in seven
Electroreduction of aromatic imines in the presence of electrophiles gave the corresponding inter- and intramolecular coupling products when the reaction was carried out with the use of chlorotrimethylsilane (CTMS) as the trapping agent of an anion intermediate.
Rh-Catalyzed Asymmetric Hydrogenation of α-Aryl Imino Esters: An Efficient Enantioselective Synthesis of Aryl Glycine Derivatives
作者:Gao Shang、Qin Yang、Xumu Zhang
DOI:10.1002/anie.200601540
日期:2006.9.25
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.
Aerobic redox deracemization of α-aryl glycine esters
作者:Xiaohan Chen、Lei Yan、Lu Zhang、Changyin Zhao、Guidong Feng、Lei Chen、Shutao Sun、Qingyun Liu、Lei Liu
DOI:10.1016/j.tetlet.2020.152107
日期:2020.7
An effective redox deracemization of α-aryl glycine esters has been described. The one-pot redox process consisted of copper(II) catalysis using molecular oxygen as terminal oxidant and chiral phosphoric acid catalyzed asymmetric transfer hydrogenation with benzothiazoline as hydride donor. The reaction exhibited good functional group tolerance, providing a range of optically active non-natural α-aryl