Acetic Anhydride → HCID 71254502, compound

Participants

Reaction Conditions

Reaction Steps

A mixture of 2-(1,1-dioxido-2,3-dihydro-1,4-benzothiazepin-4(5H)-yl)-6-methylquinazolin-4-amine (50 mg, 0.14 mmol, prepared in analogy to Example 59) and acetic anhydride (2 mL) was heated with stirring at 110° C. for 2 hours under nitrogen. The reaction mixture was diluted with ethyl acetate, washed with a saturated aqueous solution of sodium carbonate and brine, dried over sodium sulfate, filtered and concentrated in vacuo. The residue was purified by column chromatography on silica gel to give 30 mg of the product as a white powder. MS obsd. (ESI+) [(M+H)+] 397, 1H NMR (400 MHz, CD3OD) δ ppm 7.87 (d, J=7.6 Hz, 1 H), 7.80 (s, 1 H), 7.56 (m, 3 H), 7.28 (m, 1 H), 7.21 (m, 1 H), 5.11 (s, 2 H), 4.48 (s, 2 H), 2.99 (s, 2 H), 2.47 (s, 6 H).

Provenance & Evidence