苯磺酰基α,β-不饱和酮与环戊二烯的环加成反应活性的研究

Studies on the Diels-Alder Reaction Activities of Phenylsulfonyl α,β-unsaturated Ketones with Cyclopentadiene

本文通过苯磺酞基α，β-不饱和酮与环成一烯的环加成反应，探讨了苯磺酞基α，β-不饱和酮在Lewis酸催化和无催化剂的条件下发生环加成反应的活性；合成了6-取代-5-（苯磺酰基乙酰基）二环[2．2．1]］庚-2-烯（3）的环加成产物，并对其波谱特性进行了解析．

In this paper 6-Substituent-5-(Phenylsulfonylaetyl)bicyclo[2.2.1]Hept-2-enes were synthesized by Diels-Alder reactions of Phenylsulfonyl α,βunsaturated ketones with cyclopentadiene(Substituent:R＝CH3,n-Pr,Ph,H).Their structures were characterized by 1HNMR,IR,MS and elementary analysis.The reaction activities of dienophiles were studed in the presence of Lewis acid or in the absence of catalyst.