Phosphate → HCID 86666694, compound

Participants

Reaction Steps

The title compound was prepared according to the general procedure as described in method C for the preparation of phosphate derivatives by the reaction of sodium salt of N-{4-[3-chloro-4-(trifluoromethoxy)phenyl]-1,3-thiazol-2-yl}-2-(1,3,6-trimethyl-2,4-dioxo-1,2,3,4-tetrahydrofuro[2,3-d]pyrimidin-5-yl)acetamide (50 g, 0.09 mol) with di-tert-butyl chloromethyl phosphate (Intermediate 1) (58.6 g, 0.23 mol) in presence of sodium iodide (10.8 g, 0.072 mol) in dry acetone (1250 ml) to obtain 50g of a product as a pale yellow solid. Alternatively the title compound was also prepared according to the general procedure as described in step 2 of method B for the preparation of phosphate derivatives by coupling N-{4-[3-chloro-4-(trifluoromethoxy)phenyl]-1,3-thiazol-2-yl}-2-(1,3,6-trimethyl-2,4-dioxo-1,2,3,4-tetrahydrofuro[2,3-d]pyrimidin-5-yl)acetamide (500 mg, 0.945 mmol) with freshly prepared di-tert-butyl iodomethyl phosphate (Intermediate 2) (1.16 g, 3.307 mmol) using sodium hydride (57 mg, 1.418 mmol) in dry DMF (5 ml) to yield 197 mg of product as an off-white solid; 1H NMR (300 MHz, CDCl3): δ 1.49 (br s, 18H), 2.36 (s, 3H), 3.32 (s, 3H), 3.53 (s, 3H), 4.18 (s, 2H), 6.43 (d, J=6.3 Hz, 2H), 7.22-7.29 (m, 1H), 7.34 (d, J=8.4 Hz, 1H), 7.78 (t, J=8.7 Hz, 1H), 8.05 (s, 1H); ESI (m/z): 751 (M+H)+.

Provenance & Evidence