| 摘要 |
PROBLEM TO BE SOLVED: To provide a new derivative of 4,5-disubstituted-1,2,3-triazole useful as an intermediate for a medicine or an agrochemical and to provide a method of production for the same. SOLUTION: The derivative of 4,5-disubstituted-1,2,3-triazole expressed by formula (1a) is produced by reacting a derivative of 3-halo-2-hydrazono-1- hydroxyiminopropane derivative expressed by formula (2) with a dehydrating agent. [In the formula (1a) and (2), R<1> is a COOR<3> group (R<3> is H or a lower alkyl group), CONR<4> R<5> group (R<4> and R<5> are each independently a lower alkyl group) or cyano group, X is a halogen atom, R<8> is a leaving group.].
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