Ethyl iodoacetate → Ethyl 4-cyano-5-morpholin-4-ylthiophene-2-carboxylate

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A mixture of 3-morpholin-4-yl-2-(morpholin-4-ylcarbonothioyl)acrylonitrile (0.07 g, 0.26 mmol), ethyl iodoacetate (0.034 mL, 0.29 mmol) and DIPEA (0.091 mL, 0.52 mmol) in ACN (0.55 mL) was subjected to microwave irradiation at 120° C. for 10 min. The crystals formed upon cooling were filtered, washed with cold MeOH and diethyl ether to give the title compound (0.06 g, 87%). LCMS: (AA) ES+ 267.1. 1H NMR (400 MHz, CDCl3) δ: 7.62 (s, 1H), 4.30 (q, 2H), 3.85-3.87 (m, 4H), 3.58-3.60 (m, 4H) and 1.34 (t, 3H).

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