Water and theHuisgen Cycloaddition Reaction: A Focus on Polar Contributions to the Transition State in the Reactions of Dicyano(phthalazinium)methanide with Substituted Styrenes and Benzylidene Acetones
作者:Richard N. Butler、Anthony G. Coyne、William J. Cunningham、Eamon M. Moloney、Luke A. Burke
DOI:10.1002/hlca.200590128
日期:2005.7
Synthetic and kinetic studies on the 1,3-dipolar cycloaddition reactions of dicyano(phthalazin-2-ium-2-yl)methanide (1) with some substituted styrenes and ‘benzylidene acetones’ in MeCN and H2O containing 10 mol-% of MeCN are reported. The kinetic data were supported by theoretical calculations. The major products from styrenes were exo-2-aryl-1,2,3,10b-tetrahydropyrrolo[2,1-a]phthalazine-3,3-dicarbonitriles
二氰基(酞菁-2-基-2-基-2-甲基)甲烷(1)与部分取代的苯乙烯和“亚苄基丙酮”在MeCN和H 2 O中的摩尔浓度为10 mol%的1,3-偶极环加成反应的合成和动力学研究报告了MeCN。动力学数据得到理论计算的支持。苯乙烯的主要产物为exo -2-芳基-1,2,3,10b-四氢吡咯并[2,1- a ]邻苯二甲腈3,3-二甲腈3,而'亚苄基丙酮'为1-内酯,2 -外-2-乙酰基1-芳基1,2,3,10b四氢吡咯并[2,1-一个]酞嗪-3,3-二腈7。没有迹象表明在水性环境中,环己二酮过渡态的极性比在MeCN中更强。