Alkaline-Metal-Catalyzed One-Pot Aminobenzylation of Aldehydes with Toluenes
作者:Guoqing Liu、Patrick J. Walsh、Jianyou Mao
DOI:10.1021/acs.orglett.9b02737
日期:2019.11.1
A novel and easily accessible MN(SiMe3)2 (M = Li or Na)/Cs2CO3 co-catalyzed benzylation of in situ generated N-(trimethylsilyl) aldimines with toluene derivatives has been successfully developed. The catalyst exhibits high chemoselectivity for deprotonation of toluenes at the benzylic position. The utility of this system is exemplified by the one-pot synthesis of a diverse array of bioactive 1,2-diarylethylamines
已成功开发了一种新颖且易于使用的MN(SiMe 3)2(M = Li或Na)/ Cs 2 CO 3催化原位生成的N-(三甲基甲硅烷基)亚胺与甲苯衍生物的苄基化反应。该催化剂对苄基位置的甲苯去质子表现出高化学选择性。一锅合成具有优异效率和宽泛的官能团耐受性的各种生物活性1,2-二芳基乙胺的例子说明了该系统的实用性。
Convenient Access to Primary Amines by Employing the Barbier-Type Reaction of <i>N</i>-(Trimethylsilyl)imines Derived from Aromatic and Aliphatic Aldehydes
作者:Ferenc Gyenes、Kathryn E. Bergmann、John T. Welch
DOI:10.1021/jo971061r
日期:1998.5.1
A new versatile preparation of primary amines via benzylation of aromatic and aliphatic aldimines is described. Sonochemical and traditional methods for generation of the reactive intermediates are compared and contrasted. Competitive reactions were analyzed via free energy relationships to support the proposed alkylative mechanism.
Rapid, one-pot synthesis of α,α-disubstituted primary amines by the addition of Grignard reagents to nitriles under microwave heating conditions
作者:Brian T. Gregg、Kathryn C. Golden、John F. Quinn、Hong-Jun Wang、Wei Zhang、Ruifang Wang、Francis Wekesa、Dmytro O. Tymoshenko
DOI:10.1016/j.tetlet.2009.04.081
日期:2009.7
A series of α,α-disubstituted amines have been prepared in a simple and efficient one-pot procedure by the addition of Grignardreagents to a series of aliphatic, aromatic, and heteroaromatic nitriles. Key to this reported procedure is the unprecedented addition of the Grignardreagent to the nitrile under heating by microwave irradiation which both significantly improves reaction yields and reduces