5-cyano-4,5-dihydro-3,4-dicarboxypyrazole derivatives

Details 5-cyano-4,5-dihydro-3,4-dicarboxypyrazole derivatives 5-cyano-4,5-dihydro-3,4-dicarboxypyrazole derivatives

1988-11-07

1990-01-09

Ramsuer, Robert W.

Organic compounds -- part of the class 532-570 series

Organic compounds

Heterocyclic carbon compounds containing a hetero ring...

548378, C07D23106

Patent

active

048929565

ABSTRACT:
The present invention provides 5-cyano-4,5-dihydro-3,4-dicarboxypyrazoles and a process for preparing such compounds which comprises reacting a dialkyl fumarate with diazoacetonitrile.

REFERENCES:
patent: 4589905 (1986-05-01), Beck
Pyrazoles, Pyrazolines, Pyrazolidines, Indazoles and Condensed Rings, edited by Richard Wiley (1967), p. 198.
Kalvoda, Collection of Czechoslovakian Chemistry, 40, 1431 (1970).
Lantos et al., J. Org. Chem., 43(25), 4841 (1978).
Jones et al., J. Org. Chem., 20, 1342 (1955).
Introduction to Organic Chemistry, Streitweiser et al., ed., 1091-1094 (1976).

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