Dimethylformamide → 2-Methyl-N-(6-{6-(methyloxy)-5-[(methylsulfonyl)amino]-3-pyridinyl}-1H-indazol-4-yl)-1,3-thiazole-4-carboxamide

Participants

Reaction Conditions

Reaction Steps

2-Methyl-N-[1-(phenylsulfonyl)-6-(trimethylstannanyl)-1H-indazol-4-yl]-1,3-thiazole-4-carboxamide (200 mg, 0.356 mmol), N-[5-bromo-2-(methyloxy)-3-pyridinyl]methanesulfonamide (120 mg, 0.428 mmol) and Pd(PPh3)4 (41 mg, 0.036 mmol) were weighed to a microwave vial. DMF (3 ml) was added and the reaction was heated in the microwave at 120° C. for 30 mins. The reaction mixture was passed through a 1 g silica cartridge (pre-conditioned with methanol), washing with methanol. The solvent was removed by blow down. The residue was dissolved in DCM and purified on the ISCO companion, using a 40 g Si cartridge, a gradient of 0-6% methanol in DCM containing 1% ammonia, over 14 mins and a 40 ml/min flow rate. LCMS showed still not pure, therefore the material was further purified by MDAP (Method E). The purified material was dissolved in IPA (3 ml) and 2M NaOH (aq, 3 ml) was added. The reaction mixture was left overnight then concentrated and acidified with 2M HCl (aq). The precipitate was filtered, re-dissolved in methanol and dried by blow down to afford the title compound (11 mg).

Provenance & Evidence