Dipolar cycloaddition reaction of diazoalkanes with trimethylsilyl substituted alkynes. Steric control of regiochemistry by the trimethylsilyl group

DOI: 10.1016/S0040-4020(01)86680-1

Source and publish data:

Tetrahedron p. 1145 - 1162 (1990)

Update date:2022-08-02

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Authors:

Padwa, Albert

Wannamaker, M. Woods

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Article abstract of DOI:10.1016/S0040-4020(01)86680-1

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

Full text of DOI:10.1016/S0040-4020(01)86680-1

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