(S)-3-(4-(7-Iodo-[1,2,4]triazolo[4,3-a]pyridin-3-yl)phenyl)-5,5-dimethyl-4-phenyloxazolidin-2-one → (S)-3-(4-(5,5-dimethyl-2-oxo-4-phenyloxazolidin-3-yl)phenyl)-[1,2,4]triazolo[4,3-a]pyridine-7-carbonitrile

Participants

Reaction Conditions

Reaction Steps

To a 2 mL sealable tube were added (S)-3-(4-(7-iodo-[1,2,4]triazolo[4,3-a]pyridin-3-yl)phenyl)-5,5-dimethyl-4-phenyloxazolidin-2-one (70 mg, 0.137 mmol), dicyanozinc (16.11 mg, 0.137 mmol, commercially available from Sigma-Aldrich, Milwaukee, Wis.) and Pd(Ph3P)4 (15.85 mg, 0.014 mmol, commercially available from Sigma-Aldrich, Milwaukee, Wis.) in DMF (457 μL). The mixture was purged with nitrogen for 5 minutes and then the tube was sealed. The vessel was heated to 85° C. in a microwave oven for 1 hour. LC-MS indicated complete conversion to the desired product. The final reaction mixture was passed through a syringe filter, and the material thus obtained was purified by reverse-phase preparative HPLC using 0.1% TFA in ACN/H2O, gradient 15% to 90% over 20 minutes to provide (S)-3-(4-(5,5-dimethyl-2-oxo-4-phenyloxazolidin-3-yl)phenyl)-[1,2,4]triazolo[4,3-a]pyridine-7-carbonitrile (20 mg, 0.049 mmol, 35.6% yield) as a tan solid. 1H NMR (400 MHz, DMSO-d6) δ 8.71 (t, J=1.37 Hz, 1H), 8.66 (dd, J=1.17, 7.34 Hz, 1H), 7.84-7.90 (m, 2H), 7.72-7.78 (m, 2H), 7.37-7.44 (m, 2H), 7.28-7.37 (m, 3H), 7.22 (dd, J=1.56, 7.34 Hz, 1H), 5.56 (s, 1H), 1.67 (s, 3H), 0.94 (s, 3H). m/z (ESI) 410.2 (M+H)+.

Provenance & Evidence