Related Products of 13958-93-5, With the rapid development and complex challenges of chemical substances, the synthesis of new drugs is usually one of the most effective ways to increase yield.13958-93-5, name is 3,5-Dichloroisonicotinic acid, molecular formula is C6H3Cl2NO2, molecular weight is 192, as common compound, the synthetic route is as follows.
Preparation of (3,5-dichloro-pyridin-4-yl)-(3-hydroxymethyl-piperidin-1-yl)-methanone: To a suspension of 3,5-dichloroisonicotinic acid (250 mg, 1.30 mmol) in CH2Cl2 (6.5 mL) was added DMF (cat.) and oxalyl chloride (0.45 mL, 5.2 mmol), and the mixture was stirred at room temperature for 2 h then concentrated in vacuo. To the residue was added THF (2 mL), Et3N (0.27 mL, 1.9 mmol), and a solution of 3-piperidinemethanol (150 mg, 1.30 mmol) in THF (4.5 mL), and the mixture was stirred at room temperature for 21 h. The mixture was diluted with CH2Cl2 (50 mL) and brine (30 mL) and the phases were separated. The organic layer was washed with brine (2*50 mL) and saturated NaHCO3 (2*50 mL). The organic layer was dried (MgSO4), filtered, concentrated, and dried in vacuo to afford a crude oil. Purification of the crude material by column chromatography on silica gel (100:5:1 CH2Cl2/MeOH/NH4OH) gave a yellow oil (mixture of isomers) (147 mg, 39%). 1H NMR (CDCl3) delta 1.28-1.96 (m, 4H), 2.89-3.26 (m, 3H), 3.35-3.45 (m, 1H), 3.50-3.72 (m, 2H), 4.29-4.56 (m, 1H), 8.54 (m, 2H).
Statistics shows that 13958-93-5 is playing an increasingly important role. we look forward to future research findings about 3,5-Dichloroisonicotinic acid.
Reference:
Patent; Bridger, Gary; Kaller, Al; Harwig, Curtis; Skerlj, Renato; Bogucki, David; Wilson, Trevor R.; Crawford, Jason; McEachern, Ernest J.; Atsma, Bem; Nan, Siqiao; Zhou, Yuanxi; Schols, Dominique; Smith, Christopher D.; Di Fluri, Maria R.; US2004/19058; (2004); A1;,
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