Monatshefte fur Chemie p. 1023 - 1030 (1990)
Update date:2022-09-26
Topics:
Awad, Ibrahim M. A.
The keto (thio) tautomers 1-4 of the hydrazono pyrazolone, thiopyrazolone derivatives underwent simultaneous diformylation, chlorination (desulphurization) and ring closure under Vilsmeier reaction conditions giving the pyrazolo<3,4-c>pyrazole aminoacrole
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