General non-catalytic approach to spiroacenaphthylene heterocycles: multicomponent assembling of acenaphthenequinone, cyclic CH-acids and malononitrile
摘要:
The new type of non-catalytic cascade reaction was found: the direct multicomponent reaction of acenaphthenequinone, cyclic CH-acids, and malononitrile to form spiroacenaphthylene heterocycles. The direct heating in water acenaphthenequinone, cyclic CH-acids, and malononitrile at 80 degrees C results in the formation of spiroacenaphthylene heterocycles in 90-95% yields. Thus, a new simple and efficient green 'one-pot' method to synthesize substituted spiroacenaphthylene frameworks was found directly from simple starting compounds. The application of this convenient green multicomponent method is also beneficial from the viewpoint of diversity-oriented large-scale processes. (C) 2012 Elsevier Ltd. All rights reserved.
Basic Ionic Liquid-Catalyzed One-Pot Synthesis of the Spiroacenaphthylene Derivatives in Water Medium
作者:Jia Zheng、Yiqun Li
DOI:10.1016/j.mencom.2012.05.012
日期:2012.5
The basic ionic liquid (benzyl)(dimethyl)(N,N-dimethylaminoethyl)ammonium chloride was found to be an efficient and reusable catalyst for the synthesis of spiroacenaphthylenes via the multicomponent reaction between acenaphthenequinone, malononitrile and alpha-methylenecarbonyl compounds (beta-diketones, pyrazolones) in water.
General non-catalytic approach to spiroacenaphthylene heterocycles: multicomponent assembling of acenaphthenequinone, cyclic CH-acids and malononitrile
作者:Michail N. Elinson、Alexey I. Ilovaisky、Valentina M. Merkulova、Pavel A. Belyakov、Fructuoso Barba、Belen Batanero
DOI:10.1016/j.tet.2012.05.005
日期:2012.7
The new type of non-catalytic cascade reaction was found: the direct multicomponent reaction of acenaphthenequinone, cyclic CH-acids, and malononitrile to form spiroacenaphthylene heterocycles. The direct heating in water acenaphthenequinone, cyclic CH-acids, and malononitrile at 80 degrees C results in the formation of spiroacenaphthylene heterocycles in 90-95% yields. Thus, a new simple and efficient green 'one-pot' method to synthesize substituted spiroacenaphthylene frameworks was found directly from simple starting compounds. The application of this convenient green multicomponent method is also beneficial from the viewpoint of diversity-oriented large-scale processes. (C) 2012 Elsevier Ltd. All rights reserved.