Triethylamine → 2-(1-oxido-2,3-dihydro-1,4-benzothiazepin-4(5H)-yl)-6-methylthieno[3,2-d]pyrimidin-4(3H)-one

関与物質

反応手順

2-Chloro-6-methylthieno[3,2-d]pyrimidin-4(3H)-one (3.01 g, 15 mmol) was dissolved in toluene (50 mL), followed by addition of 6,7,8,9-tetrahydro-5-thia-8-aza-benzocycloheptene-5-oxide (3.39 g, 18.7 mmol), triethylamine (6 mL, 43 mmol). Then the solution was heated to reflux overnight. The suspension was filtrated and the solid was washed by methanol to afford 4.2 g of 2-(1-oxido-2,3-dihydro-1,4-benzothiazepin-4(5H)-yl)-6-methylthieno[3,2-d]pyrimidin-4(3H)-one (yield was 81.1%) as a slight brown solid. MS obsd. (ESI+) [(M+H)+] 346.

情報源と証拠