Stannous chloride dihydrate → HCID 66980764, compound

Participants

Reaction Steps

A mixture of Example 2A (6.0 g, 15.6 mmol) and SnCl2.2H2O (10.54 g, 46.8 mmol) in 37% HCl (200 mL) and methanol (300 mL) was heated to reflux for 20 hours, cooled to room temperature, and filtered. The filter cake was washed with 1:1H2O/methanol and dried in a vacuum oven at 65° C. to provide 4.6 g (91%) of the desired product. MS (DCI) m/e 324 (M+H)+, 341 (M+NH4)+; 1H NMR (300 MHz, DMSO-d6) δ 9.98 (s, 1H), 8.18 (s, 1H), 7.69 (d, J=8.5 Hz, 1H), 7.12-7.16 (m, 2H), 7.05 (d, J=2 Hz, 1H), 6.95 (dd, J=8.4, 2 Hz, 1H), 6.91 (d, J=9.1 Hz, 1H).

Provenance & Evidence