Boron tribromide → HCID 57725507, compound

Participants

Reaction Steps

To the solution of (1R,2R)-2-(7-bromo-6-methoxybenzo[d]thiazol-2-ylamino) cyclohexanol (191 mg, 0.537 mmol, 1.0 eq) in 10 mL of DCM was added 1 M solution of boron tribromide (ca. 3.0 mL, 2.68 mmol, 5.0 eq) at room temperature. The reaction mixture was refluxed for 12 hours, thereafter the mixture was diluted with saturated sodium bicarbonate (ca. 100 mL) till PH=7 and aqueous layer extracted with ethyl acetate (ca. 150 mL×3). Combined organic layers were dried over sodium sulfate, filtered and condensed under reduced pressure to give sufficiently pure crude product which was carried to next step without further purification LC/MS (m/z) [345.0] (MH+).

Provenance & Evidence