2(3H)-Benzoxazolone → HCID 23160512, compound

Participants

Reaction Steps

81.1 g (600 mmol) 2-benzoxazolinone are dissolved at 80° C. in 720 g polyphosphoric acid. Then 66.1 ml (720 mmol) 2-chloropropionic acid are added dropwise and the mixture is heated for 3 h to 125° C., then the reaction mixture is poured onto ice water, the precipitated product is suction filtered, washed with water and dried at 98° C. in the circulating air dryer.

Provenance & Evidence