Pyridine → HCID 23571042, compound

Participants

Reaction Conditions

Reaction Steps

To a solution of 5-[2-(3-chloro-phenyl)-2-methanesulfonyloxy-acetylamino]-indazole-1-carboxylic acid tert-butyl ester (1.49 mmol) in dry THF (4 mL) was added pyridine (4.48 mmol, 3 equivalents) followed by followed by a dry THF solution of (2-amino-ethyl)-carbamic acid tert-butyl ester (3 equivalents, ˜0.5 mL/mmol). The resulting solution was refluxed at 60° C. overnight. The reaction mixture was then concentrated in vacuo and the resulting oil was partitioned between EtOAc and brine. The organic layer was washed with brine (thrice), dried over sodium sulphate, filtered and concentrated under reduced pressure. The residue was purified by silica gel chromatography using eluting with EtOAc:hexane (60:40) to afford the title compound in 85% yield.

Provenance & Evidence