Process for the preparation of triazolones

Details Process for the preparation of triazolones Process for the preparation of triazolones

1995-06-02

1997-04-29

Ford, John M.

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

Organic compounds

Nitrogen attached directly or indirectly to the purine ring...

5482646, 5482632, C07D40310

Patent

active

056250649

ABSTRACT:
Described is a process for preparing triazolone compounds of the formula ##STR1## comprising heating a mixture of a compound of the formula ##STR2## and a hydrazine derivative of the formula R.sup.5 --NH--NH--CHO, R.sup.5 --NH--NH--C(O)OC(CH.sub.3).sub.3 or R.sup.5 --NH--NH--C(O)OCH.sub.2 C.sub.6 H.sub.5, optionally in the presence of an added base.

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Temple, Jr., et al., "Triazoles 1,2,4", The Chemistry of Heterocyclic Compounds, John Wiley & Sons, New York (1981), pp. 372-373.
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