Synthesis of ethyl 1,2,2-tricyanocyclopropanecarboxylates from bromomalononitrile and ylidenecyanoacetate
作者:Yoon Chin Kim、Harold Hart
DOI:10.1039/j39690002409
日期:——
A general synthesis for ethyl 3,3-dialkyl- and 3-aryl-1,2,2-tricyanocyclopropanecarboxylates frombromomalononitrile and ylidenecyanoacetates is described. When stereoisomeric products are possible, the predominant and sometimes exclusive isomer obtained has the larger C-3 substituent and the ethoxycarbonyl group in the trans-position.
Couturier,R. et al., Bulletin de la Societe Chimique de France, 1975, p. 1670 - 1674
作者:Couturier,R. et al.
DOI:——
日期:——
Steric effects in high pressure Knoevenagel reactions
作者:Gérard Jenner
DOI:10.1016/s0040-4039(00)01930-4
日期:2001.1
The pressure effect in Knoevenagel condensations involving ketones and ethyl cyanoacetate is studied. The reactions are diversely affected. For cyclic ketones there is a small effect on the reaction yield. However, in the case of acyclic ketones, the sensitivity of the reaction to pressure increases with increasing steric congestion of the ketone. Such a result highlights the synthetic utility of high pressure for the preparation of hindered functionalized alkenes. (C) 2000 Elsevier Science Ltd. All rights reserved.
The gem Effect. I. The Influence of 3-Substituents on the Rates of Solvolysis of Glutaric Anhydride. A Conformational Analysis
作者:Thomas C. Bruice、William C. Bradbury
DOI:10.1021/ja00949a030
日期:1965.11
Nasipuri,D. et al., Journal of the Indian Chemical Society, 1963, vol. 40, p. 225 - 231