Sodium hydride → HCID 45111484, compound

Participants

Reaction Steps

To an ice cold suspension of NaH (6 mg, 160 umol) in DMF (3 ml) under an argon atmosphere was added a solution of [2-(4-chloro-phenyl)-2H-indazol-3-yl]-cyclohexyl-amine (50 mg, 153 μmol; example 11.1) in DMF (1 ml) within 10 min. The suspension was stirred for 1 h at ambient temperature. A solution of cyclohexyl chloroformate (33 mg, 203 μmol; [13248-54-9]) in DMF (1 ml) was added within 5 min. The reaction mixture was stirred for 14 h at ambient temperature, poured onto ice water/brine 1/1 and extracted two times with iPrOAc. The combined extracts were washed with brine and dried over Na2SO4. The solvent was removed under reduced pressure and the residue was purified by preparative thin layer chromatography (silica gel, iPrOAc/heptane) to give the title compound (3 mg, 7 μmol; 3%) as brown solid. MS: m/e=452.4 [M+H+].

Provenance & Evidence