
Tetrahedron p. 1145 - 1162 (1990)
Update date:2022-08-02
Topics:
Padwa, Albert
Wannamaker, M. Woods
A study of the cycloaddition behavior of several trimethylsilyl substituted alkynes with 2-diazopropane and diazomethane has been carried out. Aryl or alkyl ethynyl sulfones react to give 5-sulfonyl substituted 3H-pyrazoles which extrude nitrogen on photo
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