Bromine → HCID 10566891, compound

Participants

Reaction Steps

Bromine (0.593 mL, 11.51 mmol) was added dropwise to a 0° C. stirred solution of 1-acetyl-N-benzylcyclobutanecarboxamide (2.22 g, 9.60 mmol) in ethanol (35.5 mL). After 15 minutes, the ice bath was removed. The flask was sealed, and stirring was continued for 6.5 hrs. HPLC and LC/MS after 5 hrs indicated a complete or nearly complete reaction. The reaction was quenched by the addition of 25 mL of sat. aq NaHSO3 soluition. EtOAc was added (50 mL), the layers were separated, the aq layer was extracted with EtOAc (20 mL), the combined EtOAc layers were washed with water, brine, dried over Na2SO4, and concentrated under vacuum to give the crude product (2.80 g) as an oily yellow solid. The crude product was sonicated briefly in hexane. The ppt was collected by filtration, rinsed with hexane, and dried under vacuum to yield 2.33 g of the title compound as a pale yellow solid. LC/MS: m/e 312.08 (one of 2 Br-pattern peaks, M+H).

Provenance & Evidence