Triphenylphosphine → HCID 86687932, compound

Participants

Reaction Conditions

Reaction Steps

4-Amino-5-chloro-2-hydroxy-N-(2-hydroxyethyl)-N-methylbenzamide (300 mg, 1.22 mmol) was stirred in dichloromethane at 0° C. under an atmosphere of nitrogen then TEA (247 mg, 2.4 mmol), triphenylphosphine (320 mg, 1.2 mmol) and DEAD (212 mg, 1.2 mmol) were added. The reaction was allowed to stir for 1 h at 0° C., after which time LCMS indicated the formation of a peak consistent with the target material. The volatiles were removed under reduced pressure and the resulting gum was dissolved in dichloromethane then passed through a SCX-2 20 g cartridge. The cartridge was washed with dichloromethane-methanol 10% and the fractions were collected in 100 mL flasks. TLC indicated that the fractions were not identical in composition which was verified by LCMS. The purest fraction was concentrated to afford the target material (18 mg, 5%).

Provenance & Evidence