| 摘要 |
PROBLEM TO BE SOLVED: To provide a method for highly selectively synthesizing a 1,3,4-trisubstituted pyrazole at a low cost useful as a medicine, an agricultural chemical or an intermediate for synthesizing the same. SOLUTION: A 1,3,4-trisubstituted pyrazole can highly selectively be synthesized via the cyclization of a chlorohydrazone intermediate using a selectively synthesizable N'-substituted hydrazide as a starting material. COPYRIGHT: (C)2009,JPO&INPIT
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