4-(Prop-2-yn-1-yl)-1lambda~6~,4-thiazinane-1,1-dione → 1-(2,5-Dichlorobenzyl)-7-[3-(1,1-dioxo-1lambda6-thiomorpholin-4-yl)prop-1-ynyl]-1,2,3,4-tetrahydropyrido[2,3-b]pyrazine

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Reaction Steps

1-(2,5-Dichlorobenzyl)-7-iodo-1,2,3,4-tetrahydropyrido[2,3-b]pyrazine (108 mg) was coupled with 4-prop-2-ynyl-thiomorpholine 1,1-dioxide as in General Procedure 5 to give the title compound as an off-white solid (34% yield). M.p.>200° C., LCMS: m/z=467.33 (M+H+), 1H-NMR (CDCl3, 400 MHz) δ 3.11 (8H, s), 3.40 (2H, t, J=4.8 Hz), 3.56 (2H, s), 3.61 (2H, t, J=4.7 Hz), 4.41 (2H, s), 6.42 (1H, dt, J=1.5 Hz), 7.22 (2H, m), 7.35 (1H, d, J=8.3 Hz), 7.58 (1H, d, J=1.5 Hz).

Provenance & Evidence