Tetrahedron

Preparation and reactivity of arylsulfonyl substituted cyclopropenes

A Padwa, MW Wannamaker

文献索引：Padwa, Albert; Wannamaker, M. Woods Tetrahedron, 1991 , vol. <32> 47, p. 6139 - 6156

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被引用次数: 28

摘要

A study of the cycloaddition behavior of several arylsulfonyl substituted alkynes with 2- diazopropane has been carried out. These activated acetylenes react to give 3H-pyrazoles which extrude nitrogen on photolysis to produce cyclopropenes in high yield. Soft nucleophiles such as thiophenoxide readily add to the activated pi-bond to give thiophenyl substituted cyclopropanes. Reaction of 1-phenylsulfonyl-2, 3, 3-trimethylcyclopropene ...