Tributyltin Chloride → Imidazo[1,2-a]pyrimidine, 3-(tributylstannyl)-7-(trifluoromethyl)-

Participants

Reaction Conditions

Reaction Steps

To a cooled (−78° C.) solution of 3-bromo-7-trifluoromethyl-imidazo[1,2-a]pyrimidine (1.0 g, 3.78 mmol) in tetrahydrofuran (20 ml) was added isopropylmagnesium chloride (2.08 ml of a 2.0M solution in tetrahydrofuran, 4.16 mmol). After stirring for 5 min tributyltin chloride (1.2 ml, 4.42 mmol) was added and the reaction stirred for 10 min at −78° C. then allowed to warm to ambient temperature to give a solution of 3-tributylstannyl-7-trifluoromethylimidazo[1,2-a]pyrimidine in tetrahydrofuran (ca. 0.15M): m/z (ES+) 474, 476, 478 (M++H).

Provenance & Evidence