反应详情

To a well-stirred suspension consisting of 1.34 g. (5.0 mmole) of 4-(N,N-diethylaminomethyl)benzoic acid hydrochloride (the product of Preparation G) in 25 ml. of methylene chloride under a nitrogen atmosphere, there was added over a five-minute period a solution consisting of 1.5 g. (0.0118 mole) of oxalyl chloride dissolved in 5 ml. of methylene chloride. The resulting reaction mixture was refluxed for a period of 17 hours and then cooled to room temperature (~20° C.). The colorless solution so obtained was evaporated under reduced pressure, and the resulting residue was washed twice with methylene chloride and then stripped free of solvent to give a white solid product. In this way, there was readily obtained substantially pure 4-(N,N-diethylaminomethyl)benzoyl chloride hydrochloride, which was used in the next reaction step without any further purification being necessary. The yield of product was assumed to be quantitative.

1. customThe resulting reaction mixture
2. temperaturewas refluxed for a period of 17 hours
3. customThe colorless solution so obtained
4. customwas evaporated under reduced pressure
5. washthe resulting residue was washed twice with methylene chloride
6. customto give a white solid product