Processes for preparing substituted 4-hydroxymethyl-1-phenyl-3-p

Details Processes for preparing substituted 4-hydroxymethyl-1-phenyl-3-p Processes for preparing substituted 4-hydroxymethyl-1-phenyl-3-p

1988-03-07

1989-05-30

Lee, Mary C.

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

Organic compounds

Heterocyclic carbon compounds containing a hetero ring...

C07D20708

Patent

active

048352853

ABSTRACT:
A process for preparing a substituted 4-hydroxymethyl-1-phenyl-3-pyrazolidinone of the formula ##STR1## wherein R.sup.1 is alkyl and R.sup.2 is selected from the group consisting of halogen, alkoxy, nitro, alkyl, and aryl, comprising reacting a cyclic sulfite of the formula ##STR2## wherein R.sup.1 is as described above and X is halide, with an aromatic hydrazine of the formula ##STR3## wherein R.sup.2 is as described above, in the presence of a basic catalyst and a solvent.

REFERENCES:
patent: 3952009 (1976-04-01), Machiele
patent: 4000301 (1976-11-01), Walworth
Potts, Kevin T., Comprehensive Heterocyclic Chemistry, 1984, p. 286.

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