Lithium Alkylamide-Catalyzed Addition Reaction of Alkylamines to Vinyl Monomers. III. Addition Reaction ofp-Substituted Benzylamines to Styrene and Divinylbenzenes
摘要:
研究了烷基酰胺锂催化的对取代苄胺与间二乙烯基苯和对二乙烯基苯的加成反应,以合成新的苯乙烯衍生物。尽管二乙烯基苯具有两个乙烯基,但1:1加合物,N-(对位取代的苄基)乙烯基苯乙胺(6, 8)被发现是选择性制备的。还检查了与苯乙烯的反应作为模型反应。根据动力学研究,对取代苄胺与苯乙烯、间二乙烯基苯和对二乙烯基苯的加成反应的 Hammett p 值在 50 °C 下分别为 -0.72、-0.67 和 -1.1。
Nickel-catalyzed hydrogenative coupling of nitriles and amines for general amine synthesis
作者:Vishwas G. Chandrashekhar、Wolfgang Baumann、Matthias Beller、Rajenahally V. Jagadeesh
DOI:10.1126/science.abn7565
日期:2022.6.24
Efficient and general methods for the synthesis of amines remain in high demand in the chemical industry. Among the many known processes, catalytic hydrogenation is a cost-effective and industrially proven reaction and currently used to produce a wide array of such compounds. We report a homogeneous nickel catalyst for hydrogenative cross coupling of a range of aromatic, heteroaromatic, and aliphatic