2-Chlorobenzothiazole → N-(3-(3-chloropyrazin-2-yloxy)cyclobutyl)benzo[d]thiazol-2-amine

Participants

Reaction Conditions

Reaction Steps

A mixture of 3-(3-chloro-pyrazin-2-yloxy)-cyclobutylamine hydrochloride (1.2 g, 6.28 mmol), 2-chloro-benzothiazole (purchased from ALDRICH™) (1.07 g, 6.28 mmol) and DIEA (1.8 g, 12.56 mmol) in NMP (12 mL) was heated to 180° C. for 2 hours in microwave. The reaction mixture was extracted with EtOAc (40 mL) and water, the organic phase was washed with brine and dried over Na2SO4. The organic layers were concentrated and purified by column chromatography on silica gel to give N-(3-((3-chloropyrazin-2-yl)oxy)cyclobutyl)benzo[d]thiazol-2-amine (3.0 g, 6 mmol, 95.5%). ESI-MS (M+1): 333 calc. for C15H13ClN4OS 332.

Provenance & Evidence