{"id":4196,"date":"2021-05-21T03:39:14","date_gmt":"2021-05-20T19:39:14","guid":{"rendered":"https:\/\/www.pyrazoles-derivatives.com\/?p=4196"},"modified":"2021-05-21T03:39:14","modified_gmt":"2021-05-20T19:39:14","slug":"introduction-of-a-new-synthetic-route-about-c7h9in2o2","status":"publish","type":"post","link":"https:\/\/www.pyrazoles-derivatives.com\/?p=4196","title":{"rendered":"Introduction of a new synthetic route about C7H9IN2O2"},"content":{"rendered":"

Each compound has different characteristics, and only by selecting the characteristics of the compound suitable for a specific situation can the compound be applied on a large scale. 754219-01-7, name is Ethyl 5-iodo-1-methyl-1H-pyrazole-4-carboxylate, This compound has unique chemical properties. The synthetic route is as follows., Computed Properties of C7H9IN2O2<\/a><\/p>\n

On the other hand, 5-iodo-1-methylpyrazole-4-carboxylic acid (150 mg, 0.58 mmol), given by hydrolysis of 5-iodo-1-methylpyrazole-4-carboxylic acid ethyl ester (Reference compound No.15-2), and oxalyl chloride (0.053 mL, 0.61 mmol) were stirred at 50C for 1 hour. N,N-Diisopropylethylamine (0.51 mL, 2.9 mmol) and amine-derivative polystyrene(I) were added to a solution of 5-iodo-1-methylpyrazole-4-carbonyl chloride prepared by an above method in anhydrous methylene chloride (3.3 mL), and then the whole was shaken at room temperature for 19 hours. The reaction mixture was filtered, the polystyrene resin was washed with methanol (6.0 mL) and chloroform (6.0 mL) four times alternately, and then the resin was washed with diethyl ether (6.0 mL), and dried under reduced pressure to give amide-derivative polystyrene (II). This resin(II), tris(dibenzylideneacetone)dipalladium(0) (160 mg, 0.17 mmol), 1,1-bis(diphenylphosphino)ferrocene (400 mg, 0.73 mmol), and N,N-diisopropylethylamine (0.60 mL, 3.3 mmol) were suspended in N,N-dimethylacetamide (5.0 mL). This suspension was frozen, allowed to stand under reduced pressure, and melted. This procedure was repeated twice and dissolved oxygen in the solvent was removed, 4-pyridinemethanethiol hydrochloride (0.40 g, 2.70 mmol) was added thereto, and then the reaction mixture was stirred at 60 C under an argon atmosphere for 24 hours. The reaction mixture was filtered, the resulting resin was washed with N,N-dimethylformamide (6.0 mL) twice, with methanol (6.0 mL) and chloroform (6.0 mL) three times alternately, and with diethyl ether (6.0 mL), then dried under reduced pressure. A solution of 20% trifluoroacetic acid in methylene chloride (5.0 mL) was added to this resin, the whole was shaken at room temperature for 30 minutes, and then polystylene resin was filtered out. The filtrate was diluted with methylene chloride (4.0 mL), and then a saturated aqueous sodium hydrogencarbonate solution was added to adjust to pH 7. The methylene chloride layer was evaporated under reduced pressure, and then the resulting residue was purified by silica gel column chromatography to give 7.0 mg of the title compound as a yellow solid. (Yield 36%)1H-NMR(500MHz,CDCl3)delta 2.33(s,6H),3.59(s,3H),3.97(s,2H),6.80(s,1H),6.94(dd,J = 4.4,1.6 Hz,2H), 7.22(s,2H),8.11(s,1H),8.48(dd,J = 4.4,1.6 Hz,2H),8.81(s,1H)<\/p>\n

According to the analysis of related databases, 754219-01-7, the application of this compound in the production field has become more and more popular.<\/p>\n

Reference:
Patent; SANTEN PHARMACEUTICAL CO., LTD.; EP1602647; (2005); A1;<\/a>,
Pyrazole – Wikipedia<\/a>,
Pyrazoles – an overview | ScienceDirect Topics<\/p>\n","protected":false},"excerpt":{"rendered":"

According to the analysis of related databases, 754219-01-7, the application of this compound in the production field has become more and more popular.<\/p>\n","protected":false},"author":8,"featured_media":0,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[691,131],"tags":[127],"class_list":["post-4196","post","type-post","status-publish","format-standard","hentry","category-754219-01-7","category-pyrazoles-derivatives","tag-m-w200-300"],"yoast_head":"\nIntroduction of a new synthetic route about<\/title>\n<meta name=\"description\" content=\"Each compound has different characteristics, and only by selecting the characteristics of the compound suitable for a specific situation can the compound be applied on a large scale. 754219-01-7, name is Ethyl 5-iodo-1-methyl-1H-pyrazole-4-carboxylate, This compound has unique chemical properties. 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