Dibutyltin oxide → HCID 178519743, compound

Participants

Reaction Steps

A mixture of 3(pyridin-3-yl)-7-[1-cyanomethyl-6-(4-fluorophenyl)indol-3-ylcarbonyl]-1H,3H-pyrrolo[1,2-c]thiazole (77 mg, 0.161 mmol), prepared as in Example 94, dibutyltin oxide (40 mg, 0.161 mmol), and trimethylsilylazide (47.3 μL, 0.322 mmol) in toluene (15 mL) was heated at reflux for three hours. The reaction mixture was cooled to ambient temperature and concentrated in vacuo. The crude product was azeotroped with CH2Cl2 and purified by flash chromatography on silica gel (9:1 CHCl3, methanol) to give 3-(Pyridin-3-yl)-7-[1-(1H-tetrazol-5-ylmethyl)-6-(4-fluorophenyl)indol-3-ylcarbonyl]-1H,3H-pyrrolo[1,2-c]thiazole (53 mg), m.p. 110°-118° C. 1H NMR (D3COD, 300 MHz) δ45 (d; 1H, J=15 Hz), 4.63 (dd, 1H, 15, 3 Hz), 5.75 (s, 2H), 6.57 (d, 1H, J=3 Hz), 6.67 (bs, 1H), 6.98 (d, 1H, J=3 Hz, 7.15 (t, 2H, J=9 Hz), 7.45-7.51 (m, 2H), 7.67-7.77 (m, 3H), 7.79 (s, 1H), 8.25 (s, 1H), 8.31 (d, 1H, 9 Hz), 8.55 (bs, 2H). MS (FAB) m/e 522 (M+H)+.

Provenance & Evidence