{"id":4485,"date":"2021-06-03T04:03:14","date_gmt":"2021-06-02T20:03:14","guid":{"rendered":"https:\/\/www.pyrazoles-derivatives.com\/?p=4485"},"modified":"2021-06-03T04:03:14","modified_gmt":"2021-06-02T20:03:14","slug":"new-learning-discoveries-about-1-methyl-3-trifluoromethyl-1h-pyrazole-4-carboxylic-acid-4","status":"publish","type":"post","link":"https:\/\/www.pyrazoles-derivatives.com\/?p=4485","title":{"rendered":"New learning discoveries about 1-Methyl-3-(trifluoromethyl)-1H-pyrazole-4-carboxylic acid"},"content":{"rendered":"

Some common heterocyclic compound, 113100-53-1, name is 1-Methyl-3-(trifluoromethyl)-1H-pyrazole-4-carboxylic acid, molecular formula is C6H5F3N2O2, traditional synthetic route has been very mature, but the traditional synthetic route has various shortcomings, such as complicated route, low yield, poor purity, etc, below Introduce a new synthetic route. Application In Synthesis of 1-Methyl-3-(trifluoromethyl)-1H-pyrazole-4-carboxylic acid<\/a><\/p>\n

e) 1-methyl-3-trifluoromethyl-lH-pyrazole-4-carboxylic acid (2.5g, 13mmol) was dissolved in dichloromethane (25ml) containing 5 drops of N,N-dimethylformamide. A solution of oxalyl chloride (1.8g, 14mmol) in dichloromethane (5ml) was added dropwise at room temperature. This mixture was stirred for 2hours at the same temperature and was subsequently slowly added to a mixture of 2-[5-(3,3-dimethyl-but-1-ynyl)-thiophen-2-yl]- phenylamine (3.3g, 13mmol) and triethylamine (2.0g, 20mmol) in dichloromethane (30ml). After stirring the reaction mixture for 8hours at room temperature, it was poured on ice and extracted with dichloromethane. The combined organic layer was washed with brine, dried over magnesium sulfate and evaporated. The remaining oil was purified by silica gel chromatography using ethyl acetate and hexane as eluents, giving Compound No. lai.098 (1.2g).<\/p>\n

These compound has a wide range of applications. It is believed that with the continuous development of the source of the synthetic route 113100-53-1, its application will become more common.<\/p>\n

Reference:
Patent; SYNGENTA PARTICIPATIONS AG; WO2005\/123722; (2005); A1;<\/a>,
Pyrazole – Wikipedia<\/a>,
Pyrazoles – an overview | ScienceDirect Topics<\/p>\n","protected":false},"excerpt":{"rendered":"

These compound has a wide range of applications. It is believed that with the continuous development of the source of the synthetic route 113100-53-1, its application will become more common.<\/p>\n","protected":false},"author":8,"featured_media":0,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[195,131],"tags":[126],"class_list":["post-4485","post","type-post","status-publish","format-standard","hentry","category-113100-53-1","category-pyrazoles-derivatives","tag-m-w100-200"],"yoast_head":"\nNew learning discoveries about<\/title>\n<meta name=\"description\" content=\"Some common heterocyclic compound, 113100-53-1, name is 1-Methyl-3-(trifluoromethyl)-1H-pyrazole-4-carboxylic acid, molecular formula is C6H5F3N2O2, traditional synthetic route has been very mature, but the traditional synthetic route has various shortcomings, such as complicated route, low yield, poor purity, etc, below Introduce a new synthetic route. 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