HCID 89545331, compound → HCID 89545318, compound

Participants

Reaction Steps

Step 2 To a solution of {(R)-[4-Chloro-2-fluoro-3-(3-methyl-4-nitro-benzoyl)-phenyl]-cyclopropyl-methyl}-carbamic acid tert-butyl ester (608 mg, 1.31 mmol) from step 1 in acetic acid (15 mL) was added zinc dust (859 mg, 13.1 mmol, 10 eq.) and the reaction stirred for 45 minutes. The reaction mixture was filtered and then the filtrate concentrated. The residue was partitioned between EtOAc (30 mL) and sat. aq. sodium bicarbonate (20 mL). The organic phase then washed with water (20 mL) and brine (10 mL) before it was dried (MgSO4), filtered and then concentrated to give {(R)-[3-(4-amino-3-methyl-benzoyl)-4-chloro-2-fluoro-phenyl]-cyclopropyl-methyl}-carbamic acid tert-butyl ester (570 mg, 1.31 mmol, 100%) as a yellow gum. [M−H]− 431

Provenance & Evidence