A Scalable and Metal-Free Synthesis of Indazoles from 2-Aminophenones and In Situ Generated De-Boc-Protected O-Mesitylsulfonyl Hydroxylamine Derivatives
作者:Morlacci, Valerio、Aschi, Massimiliano、Chiarini, Marco、Momoli, Caterina、Palombi, Laura、Arcadi, Antonio
DOI:10.3390/molecules29153693
日期:——
selective, diverse-oriented syntheses of significant heterocyclic derivatives, we here demonstrate the practical advantages of an alternative methodology under metal-free conditions. Our investigation into the key factors influencing the product selectivity in Brønsted acid-catalysed/mediated reactions of 2-alkynylanilines reveals that different reaction pathways can be directed towards the formation of diverse
Microwave-assisted synthesis of indole-derivatives via cycloisomerization of 2-alkynylanilines in water without added catalysts, acids, or bases
作者:Adriano Carpita、Arianna Ribecai
DOI:10.1016/j.tetlet.2009.09.135
日期:2009.12
An unprecedented green methodology is described for the preparation of differently substituted indoles via microwave-assisted cycloisomerization of 2-alkynylaniline derivatives in water. Moderate to good yields in the cyclization can be achieved for a variety of 2-aminoaryl alkynes. Reactions are run without any added metal catalyst, acid, or base, and do not take place by applying conventional heating. (C) 2009 Elsevier Ltd. All rights reserved.
Chemoselective Alkylation of Aminoacetophenones with Alcohols by Using a Palladacycle-Phosphine Catalyst
Palladacycle‐phosphine catalyzed chemoselectivealkylation of aminoacetophenones was achieved by using an environmentally friendly hydrogen auto transfer strategy.
通过使用环保的氢自动转移策略,Palladacycle-膦催化氨基苯乙酮的化学选择性烷基化。
A Scalable and Metal-Free Synthesis of Indazoles from 2-Aminophenones and In Situ Generated De-Boc-Protected <i>O</i>-Mesitylsulfonyl Hydroxylamine Derivatives