potassium hydroxide in ethanol 4 h; Heating;

1: orthoformic acid triethyl ester; Polymer: 4-phenylbutan-2-one cyclic malonic acid ester, bound to Merrifield resin 6 h; Heating; 2: phenylmethylthiourea 12 h; Heating; 3: T=220 - 240°C; 0.333333 h; Further stages. Title compound not separated from byproducts.;

sodium hydride 1.) dioxane, 50 deg C, 2.) reflux; Yield given. Multistep reaction;