Microwave-assisted oxidative coupling of amines to imines on solid acid catalysts
摘要:
A K-10 montmorillonite catalyzed microwave-assisted oxidative coupling of amines is described. Substituted benzylamines readily undergo self-coupling reactions to produce benzylidene-benzylamines, while aliphatic amines and anilines cannot form self-coupled products. A mixture of a benzylamine and an aniline or aliphatic amine, respectively, effectively, and selectively produces mixed imines, such as benzylidene-anilines and benzylidene-alkylamines. (C) 2007 Elsevier Ltd. All rights reserved.
Tris(2,4,6-trifluorophenyl)borane: An Efficient Hydroboration Catalyst
作者:James R. Lawson、Lewis C. Wilkins、Rebecca L. Melen
DOI:10.1002/chem.201703109
日期:2017.8.16
The metal‐free catalyst tris(2,4,6‐trifluorophenyl)borane has demonstrated its extensive applications in the 1,2‐hydroboration of numerous unsaturated reagents, namely alkynes, aldehydes and imines, consisting of a wide array of electron‐withdrawing and donating functionalities. A range of over 50 borylated products are reported, with many reactions proceeding with low catalyst loading under ambient
Nuclear magnetic resonance and infrared spectra of some aldimines (azomethines)
作者:K. A. W. Parry、P. J. Robinson、P. J. Sainsbury、M. J. Waller
DOI:10.1039/j29700000700
日期:——
N.m.r. and i.r. spectra are reported for 19 imines of the type PC[graphic omitted]N–C[graphic omitted]QR (P = alkyl or aryl and Q, R =(H,alk), (alk,alk), or –[CH2]n–). The variation in |Jab| with structure is examined, and evidence is found for conformational effects similar to those for allylic coupling. The CN stretching frequencies fall into characteristic and separate ranges for P = alkyl and P
报告了19种亚胺PC [Graphic] N–C [Graphic] QR(P =烷基或芳基和Q,R =(H,alk),(alk,alk)或– [CH 2 ] n –)。|中的变化 J ab | 研究了具有结构的结构,并发现了构象效应与烯丙基偶联相似的证据。对于P =烷基和P =芳基,C N的拉伸频率落入特征和单独的范围,但是较好的效果通常并不明显。
A new coupling reaction between β-lactones and electrophiles mediated by a system
作者:Fouzia Machrouhi、Jean-Louis Namy
DOI:10.1016/s0040-4020(98)00651-6
日期:1998.9
β-lactones react with ketones aldehydes and imines in the presence of a system to afford substituted tetrahydrofuranones and pyrrolidinones.