Assembly of Substituted 3-Methyleneisoindolin-1-ones via a CuI/<scp>l</scp>-Proline-Catalyzed Domino Reaction Process of 2-Bromobenzamides and Terminal Alkynes
作者:Li Li、Miao Wang、Xiaojing Zhang、Yongwen Jiang、Dawei Ma
DOI:10.1021/ol9000922
日期:2009.3.19
CuI/L-proline catalyzed coupling of 2-bromobenzamides and terminal alkynes in PrOH (or DMF and DMSO) at 85-110 degrees C and subsequent additive cyclization produces substituted 3-methyleneisoindolin-1-ones. Variation of N-substituents, aromatic ring, and methylene part is possible by using suitable starting materials.
Microwave assisted copper-free Sonogashira coupling/5-exo-dig cycloisomerization domino reaction: access to 3-(phenylmethylene)isoindolin-1-ones and related heterocycles
作者:Malik Hellal、Gregory D. Cuny
DOI:10.1016/j.tetlet.2011.08.070
日期:2011.10
An efficient microwave assisted one-pot synthesis of substituted 3-(phenylmethylene)isoindolin-1-ones is reported via a copper-free Sonogashira coupling and a regioselective 5-exo-dig cycloisomerization. This domino reaction was also extended to other related heterocycles. (C) 2011 Elsevier Ltd. All rights reserved.
Dichotomous Control of<i>E</i>/<i>Z</i>-Geometry in Intramolecular Cyclization of<i>o</i>-Alkynylbenzamide Derivatives Catalyzed by Organic Superbase P4-<i>t</i>Bu in the Presence/Absence of Water
作者:Chikashi Kanazawa、Masahiro Terada
DOI:10.1002/asia.200900342
日期:2009.11.2
it! An intramolecularcyclization reaction of o‐alkynylbenzamides that allows dichotomouscontrol of E/Z‐geometry has been developed using an organicsuperbase, P4‐tBu, as a catalyst. The presence/absence of water along with the use of an organicsuperbase provides the necessary control of the geometry at the exo‐double bond. The method enables efficient access to isoindolinone derivatives, an important
E / Z 做到了!邻炔基苯甲酰胺的分子内环化反应可实现E / Z几何形状的二分控制,已使用有机超碱P4- t Bu作为催化剂进行了开发。水的存在与否以及有机超碱的使用为exo- double键的几何形状提供了必要的控制。该方法能够有效利用异吲哚啉酮衍生物,这是一类重要的生物活性分子。