Diisopropylethylamine → HCID 46864445, 화합물

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3-(hydroxymethyl)-6a,7,9,10-tetrahydropyrido[3,2-e][1,4]thiazino[4,3-a]pyrazin-6(5H)-one (Compound 86C; 100 mg, 0.36 mmol) was suspended in propionitrile (1 mL) and (cyanomethyl)trimethylphosphonium iodide (123.0 mg, 0.51 mmol) was added followed by N-ethyl-N-isopropylpropan-2-amine (180 ul, 1.03 mmol). To the stirred mixture was then added 1-(4-chlorophenyl)piperazine hydrochloride (104.9 mg, 0.45 mmol). The reaction was heated to 90° C. with stirring for 2 h. The reaction was then cooled to room temperature and diluted with water (3 mL) and filtered. The solids were collected and refluxed in ethanol (5 mL) for 1 h. The suspension was cooled back to room temperature and filtered. The solids were collected to afford the title compound (86.1 mg, 56%) as a white solid. 1H NMR (DMSO-d6) δ: 10.66 (s, 1H), 7.69 (d, J=2.0 Hz, 1H), 7.16-7.26 (m, 2H), 7.00 (d, J=2.0 Hz, 1H), 6.86-6.96 (m, 2H), 4.88 (dt, J=13.6, 2.7 Hz, 1H), 4.26 (dd, J=10.7, 2.9 Hz, 1H), 3.34-3.42 (m, 2H), 3.07-3.16 (m, 4H), 3.02 (td, J=12.8, 2.3 Hz, 1H), 2.65-2.83 (m, 3H), 2.43-2.48 (m, 5H). [M+H] calc'd for C21H24ClN5OS, 430; found, 430.

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