Chemistry Letters p. 1099 - 1102 (1985)
Update date:2022-08-04
Topics:
Minami, Toru
Tokumasu, Shigehumi
Mimasu, Rikako
Hirao, Ichiro
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
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