Ethyl-2-(2-chloroethyl)acrylate: a new very versatile α-cyclopropylester cation synthon. Efficient synthesis of cyclopropane ester derivatives by Michael addition-induced cyclization reaction
作者:Mathilde Lachia、Sébastien Iriart、Myriam Baalouch、Alain De Mesmaeker、Renaud Beaudegnies
DOI:10.1016/j.tetlet.2011.04.046
日期:2011.6
We report here the use of the readily accessible ethyl-2-(2-chloroethyl)acrylate as a new very versatile alpha-cyclopropylester cation synthon, which reacts efficiently and selectively with carbon-, nitrogen-, sulfur- or phosphorus-centered nucleophiles through Michael addition followed by intramolecular capture of the incipient ester enolate to afford funtionalized cyclopropane esters in high yields. (C) 2011 Elsevier Ltd. All rights reserved.
Design and synthesis of novel spirocyclopropyl cyclohexane-1,3-diones and -1,3,5-triones for their incorporation into potent HPPD inhibitors
作者:Renaud Beaudegnies、Alain De Mesmaeker、Aurélie Mallinger、Myriam Baalouch、André Goetz
DOI:10.1016/j.tetlet.2010.03.047
日期:2010.5
We report the design and the efficient synthesis of novel spirocyclopropyl cyclohexane-1,3-dione and -1,3,5-trione units to be incorporated into potent HPPD inhibitors. New routes involving original combinations of synthetic equivalents of alpha-cyclopropyl ketone-alpha-anion and alpha-cyclopropyl ester-beta-cation are described. (C) 2010 Elsevier Ltd. All rights reserved.