A process for the manufacture of substituted triazolinones

Details A process for the manufacture of substituted triazolinones A process for the manufacture of substituted triazolinones

C - Chemistry, Metallurgy

07

D

C07D 249/12 (2006.01)

Patent

CA 2329239

The present invention relates to a process for manufacturing substituted triazolinones, which are intermediates in the preparation of herbicidally active compounds. In particular, this invention relates to the alkylation of a non-alkylated triazolinone intermediate product, wherein the improvement comprises conducting the alkylation reaction under pH controlled conditions. In a preferred embodiment, the invention relates to the preparation of a 5-alkoxy(or aryloxy)-2,4-dihydro-3H-1,2,4-triazol-3- one, and the alkylation of this non-alkylated triazolinone intermediate product, to produce a 5-alkoxy(or aryloxy)-4-alkyl-2,4-dihydro-3H-1,2,4- triazol-3-one.

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