Lithium Chloride → 7-Bromo-2-cyclopropyl-5-methyl-6-vinylbenzo[d]thiazole

Participants

Reaction Steps

To a solution of 7-bromo-2-cyclopropyl-5-methylbenzo[d]thiazol-6-yl trifluoromethanesulfonate (16) (410 mg, 0.988 mmol) in DMF (4 ml), was added tributylvinyltin (0.43 ml, 1.47 mmol), LiCl (125 mg, 2.94 mmol) and PdCl2(PPh3)2 (70 mg, 0.096 mmol). The reaction mixture was reacted at 80° C. overnight. The reaction was cooled down, washed by saturated NaHCO3 solution, extracted by EtOAc. The organic phase was combined, dry over MgSO4, filtered, concentrated and purified by silica gel column, eluting by 0-50% EtOAc in hexanes.

Provenance & Evidence