Sodium hydride → 7-{(E)-2-[2-(Cyclopropylmethoxy)-3-methoxyphenyl]vinyl}-2-methyl-5H-[1,3]-thiazolo[3,2-a]pyrimidin-5-one

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Reaction Steps

A stirred suspension of Step 2 intermediate (1.0 g, 2.096 mmol) in dry DMSO (12 ml) was treated with NaH (92 mg, 2.306 mmol) and 2-(cyclopropylmethoxy)-3-methoxybenzaldehyde (475 mg, 2.306 mmol) according to the procedure described in Step 3, Intermediate 2 to yield a crude solid which was purified by column chromatography using 2% ethyl acetate in DCM to afford the 600 mg of the desired compound as an off-white solid; 1H NMR (300 MHz, DMSO-d6) δ 0.31-0.32 (m, 2H), 0.53-0.55 (m, 2H), 0.84-0.86 (s, 1H), 2.42 (s, 1H), 3.74-3.76 (m, 2H), 3.79 (s, 3H), 6.25 (s, 1H), 7.00-7.16 (m, 2H), 7.31-7.33 (m, 1H), 7.80 (s, 1H), 8.06-8.11 (m, 1H); ESI-MS (m/z) 369.24 (M+H)+.

Provenance & Evidence