2,2,2-Trichloroethyl chloroformate → HCID 67131455, compound

Participants

Reaction Steps

To a solution of (3SR,4RS)-1-benzyl-3-(4-chloro-phenoxymethyl)-4-(3,4-dichloro-phenyl)-pyrrolidine 350 mg (0.78 mmol) dissolved in CH3CN (8 mL) was added 0.12 mL (0.86 mmol) of 2,2,2-trichloroethyl chloroformate and stirring was continued for 2 hours at RT. Volatiles were removed under vacuo, and the crude residue was dissolved in AcOH (5 mL) before a total of 200 mg of Zn dust was added portion wise. After three hours at RT, the reaction mixture was filtered on celite, the solvent removed under vacuo, followed by an extraction with EtOAc/aq. NaHCO3 (basic pH). The organic phases were dried on Na2SO4 and column chromatography (SiO2, CH2Cl2/MeOH 9:1 to 8:2) yielded 210 mg (75%) of the title compound as a colorless oil. ES-MS m/e: 357.1 (M+H+).

Provenance & Evidence