Triethylamine → HCID 14500395, compound

Participants

Reaction Steps

A mixture of 3-[2-[4-[bis(4-fluorophenyl)methylene]piperidin-1-yl]ethyl]thieno[3,4-d]pyrimidine-2,4-dione of Example 4 (0.80 g, 1.7 mmol), trimethylacetyl chloride (0.25 ml, 2.0 mmol) and triethylamine (0.84 ml, 6.0 mmol) in methylene chloride (20 ml) was stirred at room temperature for 16 hours. The reaction mixture was washed with water (2×30 ml) and dried over magnesium sulfate. The solvent was evaporated in vacuo and the residue was purified by flash chromatography on silica gel 60 (80 g) using 1% methanol in methylene chloride as the eluant, to give the title compound (0.35 g, 37% yield) as a colorless solid, mp 69°-72° C. IR(KBr): 1595, 1660 and 1715 cm-1 ; MS (DCI), m/z 564 (MH+); 1H NMR (CDCl3): δ 1.44 (s, 9H), 2.34 (t, J=5 Hz, 4H), 2.61 (t, J=5 Hz, 4H), 2.67 (t, J=7 Hz, 2H), 4.17 (t, J=7 Hz, 2H), 6.58 (d, J=3 Hz, 1H), 6.96-7.08 (m, 8H) and 8.25 (d, J=3 Hz, 1H).

Provenance & Evidence