A mild and efficient method for the synthesis of 1H-chromeno[2,3-d]pyrimidine-5-carboxamide derivatives via a one-pot, three-component reaction of an isocyanide, barbituric acid, and a salicylaldehyde in the presence of acetic acid in ethanol/water mixture at 75 °C is reported. This high atom economy reaction led to the construction of one benzopyran ring, and one amide group in a single synthetic
一种温和有效的方法,可在异戊二烯,巴比妥酸和水杨醛存在下,通过一锅三组分反应合成1 H -chromeno [2,3- d ]嘧啶-5-羧酰胺衍生物据报道在75°C的乙醇/水混合物中存在乙酸。这种高原子经济性反应导致在一个合成步骤中构建一个苯并吡喃环和一个酰胺基。