(Diethoxyphosphinyl)acetic acid → HCID 86702812, compound

Participants

Reaction Steps

DIPEA (5.16 g, 6.90 mL, 40 mmol) and tert-butyl 2-aminophenylcarbamate (2.08 g, 10 mmol) were added to a solution of 2-(diethoxyphosphoryl)acetic acid (2.15 g, 11 mmol) in DCM (120 mL). After the mixture was stirred for ten minutes, HATU (4.56 g, 12 mmol) was added to the reaction and stirring was prolonged for 6 h at room temperature under a nitrogen atmosphere. After completion of the reaction as indicated by HPLC, the reaction mixture was washed with saturated NaHCO3 and brine. It was dried over Na2SO4 and filtered. The filtrate was evaporated in vacuo to get the crude product, which was triturated with 30% v/v hexanes in EtOAc for 30 min. The solid was filtered, washed with 30% hexanes in EtOAc and dried to get 2.92 g of tert-butyl (2-(2-(diethoxyphosphoryl)acetamido)phenyl)carbamate as an off-white solid in 76% yield.

Provenance & Evidence