Preparing N-alkyl hydroxypyrazole derivative used as intermediates for herbicides, and also as precursors for the preparation of pharmaceuticals, involves hydrolyzing and decarboxylating 5-hydroxypyrazole-4-carboxylic acid ethyl ester derivative using perfluoropolymers of supra-acid
	MAHESH Y; ANURAG J; SINGH S K; HANUMAN G; PRABHU B
	2023-09-28
专利权人	SRF LTD (SRFS-Non-standard)
申请日期	2023-09-28
专利号	IN202313065306-A
成果简介	NOVELTY - Preparing N-alkyl hydroxypyrazole derivative of (I), involves: hydrolyzing and decarboxylating 5-hydroxypyrazole-4-carboxylic acid ethyl ester derivative of (II) using perfluoropolymers of supra-acid to obtain N-alkyl hydroxypyrazole derivative (I). USE - Process for preparing N-alkyl hydroxypyrazole derivative used as intermediates for agricultural chemicals, particularly herbicides; and also used as precursors for the preparation of pharmaceuticals. ADVANTAGE - The process is environment friendly with minimum effluent generation, and cost-effective. DETAILED DESCRIPTION - Preparing N-alkyl hydroxypyrazole derivative of formula (I), involves: hydrolyzing and decarboxylating 5-hydroxypyrazole-4-carboxylic acid ethyl ester derivative of formula (II) using perfluoropolymers of supra-acid to obtain N-alkyl hydroxypyrazole derivative (I). R=1-3C alkyl group.
IPC 分类号	C07D-231/20
国家	印度
专业领域	医药卫生
语种	英语
成果类型	专利
文献类型	科技成果
条目标识符	http://119.78.100.226:8889/handle/3KE4DYBR/20201
专题	中国科学院新疆生态与地理研究所
作者单位	SRF LTD (SRFS-Non-standard)
推荐引用方式 GB/T 7714	MAHESH Y,ANURAG J,SINGH S K,et al. Preparing N-alkyl hydroxypyrazole derivative used as intermediates for herbicides, and also as precursors for the preparation of pharmaceuticals, involves hydrolyzing and decarboxylating 5-hydroxypyrazole-4-carboxylic acid ethyl ester derivative using perfluoropolymers of supra-acid. IN202313065306-A[P]. 2023.

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