CYCLOADDITION OF DIAZOMETHANE TO BUTADIENYLPHOSPHONATES. A NEW APPROACH TO FUNCTIONALIZED PENTADIENYLPHOSPHONATES AND PYRAZOLES

DOI: 10.1246/cl.1985.1099

Source and publish data:

Chemistry Letters p. 1099 - 1102 (1985)

Update date:2022-08-04

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Authors:

Minami, Toru

Tokumasu, Shigehumi

Mimasu, Rikako

Hirao, Ichiro

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Article abstract of DOI:10.1246/cl.1985.1099

The cycloaddition reaction of diazomethane with diethyl 1,3-butadienylphosphonates containing electronegative substituents on the α-carbon atom gave diethyl (4-alkenyl-Δ¹-pyrazolin-3-yl)phosphonates in high yields.Thermolysis and the base-catal

Full text of DOI:10.1246/cl.1985.1099

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