Loading patent…
AssigneeUpl Ltd
InventorsVic PRASAD, Tinker MCBRAYER, LEANDRO ALVES, Luiz CAMPOS, Raj ARORA, Raj TIWARI
Estimating the term…
The present invention relates to an improved process for the preparation of 4-amino-N-tert-butyl-4,5-dihydro-3-isopropyl-5-oxo-1H-1,2,4-triazole-1-carboxamide (Amicarbazone). The present invention more particularly relates to an improved process for the preparation of 4-amino-N-tert-butyl-4,5-dihydro-3-isopropyl-5-oxo-1H-1,2,4-triazole-1-carboxamide (Amicarbazone) by coupling of 4-Amino-2,4-dihydro-5-(1-methylethyl)-3H-1,2,4-triazol-3-one (TAZ) and poor quality tert-Butyl isocyanate (TBIC) with purity less than or equal to 98%, preferably less than or equal to 85%.
A process for the preparation of Amicarbazone comprising reacting 4-Amino-2,4-dihydro-5-(1-methylethyl)-3H-1,2,4-triazol-3-one with tert-Butyl isocyanate having low purity.
A process for the preparation of Amicarbazone comprising the step of:
Amicarbazone produced by reacting 4-Amino-2,4-dihydro-5-(1-methylethyl)-3H-1,2,4-triazol-3-one with tert-Butyl isocyanate having purity less than or equal to 80%.
Dependencies are inferred from the claim text.