The triflic acid-mediated cyclisation of N-benzylcinnamanilides
摘要:
N-Benzylcinnamanilides cyclise with triflic acid to form 1-benzyl-4-aryl-2,4-dihydro-1H-quinolin-2-ones and 2,5-diaryl-benzazepin-3-ones. The product ratio is determined by the preferred orientation of the amide and by the electronics of the substituents. With ortho-substituted anilides, N-debenzylation also occurs to give 4-aryl-2,4-dihydro-1H-quinoline-2-ones. (C) 2013 Elsevier Ltd. All rights reserved.
AROMATIC KETONE SYNTHESIS WITH AMIDE REAGENTS AND RELATED REACTIONS
申请人:Klumpp Douglas A.
公开号:US20130267712A1
公开(公告)日:2013-10-10
A method of preparing an aryl carbonyl or aryl thiocarbonyl compound, comprises reacting an N-(nitroaryl)-amide or N-(nitroaryl)-thioamide with an aromatic ring, with a superacid catalyst, to produce the aryl carbonyl or aryl thiocarbonyl compound. The superacid is present in an amount of at most 8 equivalents in proportion to the N-(nitroaryl)-amide or N-(nitroaryl)-thioamide. A method of preparing aryl amide or aryl thioamide, comprises reacting an N-(nitroaryl)-carbamide or N-(nitroaryl)-thiocarbamide with an aromatic ring, with a superacid catalyst, to produce the aryl amide or aryl thioamide.
作者:Erum K. Raja、Daniel J. DeSchepper、Sten O. Nilsson Lill、Douglas A. Klumpp
DOI:10.1021/jo300922p
日期:2012.7.6
Friedel–Crafts acylation has been known since the 1870s, and it is an important organic synthetic reaction leading to aromatic ketone products. Friedel–Crafts acylation is usually performed with carboxylic acid chlorides or anhydrides, while amides are generally not useful substrates in these reactions. Despite being the least reactive carboxylic acid derivative, we have found a series of amides capable of
An investigation of the structure of the nitration products of 1-phenyl-5-styryltetrazole using the mass-spectrometric method
作者:V. A. Zyryanov、N. A. Klyuev、V. L. Rusinov、I. Ya. Postovskii、A. B. Belikov、L. F. Lusev
DOI:10.1007/bf00552790
日期:1980.4
The triflic acid-mediated cyclisation of N-benzylcinnamanilides
作者:Frank D. King、Stephen Caddick
DOI:10.1016/j.tet.2013.07.075
日期:2013.10
N-Benzylcinnamanilides cyclise with triflic acid to form 1-benzyl-4-aryl-2,4-dihydro-1H-quinolin-2-ones and 2,5-diaryl-benzazepin-3-ones. The product ratio is determined by the preferred orientation of the amide and by the electronics of the substituents. With ortho-substituted anilides, N-debenzylation also occurs to give 4-aryl-2,4-dihydro-1H-quinoline-2-ones. (C) 2013 Elsevier Ltd. All rights reserved.