Acetamide → 2-Acetamidoethyl acetate

To 150 ml of liquid ammonia in which 7.8 g of sodium amide had been dissolved, was added 12 g of acetamide and the reaction mixture was reacted at room temperature for 5 hours in a pressure-resistant reaction tube. Then, 57 g of 2-chloroethyl acetate was added to the reaction solution, followed by a further reaction for 3 hours at room temperature. After the completion of the reaction, ammonia was distilled off and 10% aqueous hydrochloric acid solution was added to the resulting residue so as to obtain an aqueous solution of pH 5. The aqueous solution was extracted twice with 100 ml of ethylacetate. The ethylacetate layers were dried with magnesium sulfate, followed by the distillation-off of ethylacetate. The residual substance was subjected to a distillation under reduced pressure but the intended product, N-acetoxyethylacetamide(138°-140° C./ 2 mmHg) did not come out.

1. customthe reaction mixture was reacted at room temperature for 5 hours in a pressure-resistant reaction tube
2. customfollowed by a further reaction for 3 hours at room temperature
3. distillationwas distilled off
4. addition10% aqueous hydrochloric acid solution was added to the resulting residue so as
5. customto obtain an aqueous solution of pH 5
6. extractionThe aqueous solution was extracted twice with 100 ml of ethylacetate
7. dry with materialThe ethylacetate layers were dried with magnesium sulfate
8. distillationThe residual substance was subjected to a distillation under reduced pressure
9. customthe intended product, N-acetoxyethylacetamide(138°-140° C./ 2 mmHg)

ORD record

ord-727185709a7c4f6b83cc1626fee10fcb

Source dataset

uspto-grants-1989_05

DOI

10.6084/m9.figshare.5104873.v1

Patent number

US04835312