反应详情

温度

12.5 °C

8.0 ml (0.11 mole) of thionyl chloride in 20.0 ml of methylenechloride was added to a solution of 20.0 gms 2-hydroxymethyl-3,5dimethyl-4-nitropyridine, of formula-II obtained in step-(a), at temperature of 10-15° C. over a period of 1 hr. The reaction is maintained at 10-15° C. for further 30 min. Aqueous 10% solution of sodium carbonate was slowly added to the reaction mixture at 10-15° C. and pH adjusted to 8.0 to 8.5. The organic base (compound) is over anhydrous sodium sulfate and solvent was removed under vacuum to obtain crude product. (purity 85%) Pure compound is isolated by re-crystallization from acetonitrile.

1. customof formula-II obtained in step-(a), at temperature of 10-15° C. over a period of 1 hr
2. customwas removed under vacuum
3. customto obtain crude product