反应详情

A slurry of 30.8 g (0.147 moles) of 2,6-dichloro-4-methyl-5-fluoronicotinic acid in 200 mL of dichloromethane, containing a catalytic amount of dimethyl formamide, was treated dropwise over a 1-hour period with 19.2 mL (0.22 moles) oxalyl chloride. After 1 hour, the homogenous solution was evaporated in vacuo, diluted with an equal volume of dichloromethane, and evaporated in vacuo to yield 31.6 g of the title compound as an oil.

1. customthe homogenous solution was evaporated in vacuo
2. additiondiluted with an equal volume of dichloromethane
3. customevaporated in vacuo