反应详情

A reaction mixture containing 11.4 g (0.035 mole) of N-(5-tert-butyl-1,3,4-thiadiazol-2-yl)-4-bromoacetoacetamide, 150 ml of ethanol and 3.3 g (0.036 mole) of N-methylthiourea was refluxed for 4 hours. The reaction solution was poured into 300 ml of water and treated with excess aqueous sodium bicarbonate. The product was isolated and dried. There was obtained 9.5 g (87.2%) of white solid, m.p. 198°-200° (dec.). N.M.R. (CDCl3) ∂ 1.4 [C(CH3)3 ], 3.0 (CH3), 3.8 (CH2), 6.4 (hetero-aromatic).

1. temperaturewas refluxed for 4 hours
2. customThe product was isolated
3. customdried