反应详情

Oxalyl chloride (0.81 ml) in methylene chloride (10 ml) was added dropwise to a solution of 2-methoxy-4-nitrobenzoic acid monohydrate (1 g) in methylene chloride (40 ml) and dimethylformamide (1 drop) and the reaction mixture was stirred at room temperature for 1 hour after gas evolution ceased. The solvent was then evaporated in vacuo to give an oil which was crystallised from cold ethyl acetate/hexane to give the title compound, yield 0.7 g.

1. customThe solvent was then evaporated in vacuo
2. customto give an oil which
3. customwas crystallised from cold ethyl acetate/hexane