Cu(OTf)2/Et3N-promoted cyclocondensation of activated α-methylene alkenes and nitroolefins: a novel one-pot synthesis of polysubstituted benzenes
作者:Weike Su、Kai Ding、Zhiwei Chen
DOI:10.1016/j.tetlet.2008.11.081
日期:2009.2
A simple and efficient one-potsynthesis of polyfunctionalized benzenes has been developed via cyclocondensation of activated α-methylene alkenes such as vinyl malononitriles and ethyl vinyl cyanoacetates with nitroolefins using Cu(OTf)2/Et3N as a novel catalytic system.
通过使用Cu(OTf)2 / Et 3 N作为新型催化体系,将活化的α-亚甲基烯烃(如乙烯基丙二腈和乙基乙烯基氰基乙酸酯)与硝基烯烃进行环缩反应,已开发出一种简单高效的一锅多官能苯合成方法。
Basic Ionic Liquid as Catalyst for the Efficient and Green Synthesis of 2-Amino-3-nitrobenzonitriles in Ethanol
作者:Zhiwei Chen、Kai Ding、Weike Su
DOI:10.1080/00397911.2010.486503
日期:2011.4.19
[image omitted] A basic ionic liquid, [BmIm]OH was used as catalyst in the cyclocondensation of various kinds of vinylmalononitriles with nitroolefins in ethanol at reflux. A series of 2-amino-3-nitrobenzonitriles were obtained in reasonable yields. The straightforward and green protocol was found to be fairly efficient, and the catalyst could be recycled and reused in subsequent reactions with consistent activity. The mechanism of the reaction was discussed.
BOGDANOWICZ-SZWED, KRYSTYNA;LIPOWSKA, MALGORZATA, CHEM. SCR., 28,(1988) N 3, C. 319-322
Efficient Method for the Synthesis of Polysubstituted Benzenes by One-Pot Tandem Reaction of Vinyl Malononitriles with Nitroolefins
作者:Dong Xue、Jie Li、Zun-Ting Zhang、Jin-Gen Deng
DOI:10.1021/jo070766i
日期:2007.7.1
The one-potsynthesis of polysubstituted benzene derivatives was achieved via vinylogous Michael addition of vinyl malononitriles and nitroolefins as the key step and a sequential tandemreaction. A series of complex aryl compounds such as biphenyls and terphenyls can be obtained with satisfactory yields.