Process for the preparation of alkoxytriazolinones

Details Process for the preparation of alkoxytriazolinones Process for the preparation of alkoxytriazolinones

1996-09-30

1998-01-20

McKane, Joseph

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

Organic compounds

Imidate esters

C07C27570

Patent

active

057103038

ABSTRACT:
Alkoxytriazolinones of the formula (I), ##STR1## are obtained in good yields and in high purity by reacting iminocarbonic diesters (II) with carbazinic esters (III) ##STR2## at -20.degree. C. to +120.degree. C. (1st step) and subjecting the semicarbazide derivatives (IV) formed in this process with elimination of R.sup.2 --OH ##STR3## to a cyclizing condensation reaction in the presence of a base at 20.degree. C. to 150.degree. C. with elimination of R.sup.3 --OH, if appropriate (2nd step) and, finally, by reacting the resulting with an alkylating agent of the formula R.sup.1 --X (VI) at 0.degree. C. to 150.degree. C., if appropriate in the presence of a base.

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