Efficient One-Pot Synthesis of N-Substituted 2-Aminochromones, Their Benzo-Fused Derivatives, and Diaminobenzodipyrandiones of Two New Structural Classes
作者:Giorgio Roma、Daniela Piras、Mario Di Braccio、Giancarlo Grossi
DOI:10.1055/s-0029-1218623
日期:2010.3
one-pot synthesis, starting from the appropriate acetamides, salicylic acid or its benzo-fused derivatives, and phosphoryl chloride. By the same reaction, from suitable dihydroxybenzenedicarboxylic acids, some compounds of two new structural classes, 2,7-diaminobenzo[1,2-b:4,5-b′]dipyran-4,9-diones and 2,8-diamino-4H,6H-benzo[1,2-b:5,4-b′]dipyran-4,6-diones, were synthesized. amines - chromones - heterocycles
N-取代的2-氨基色酮及其苯并稠合衍生物是通过新的一锅法合成以高收率获得的,从合适的乙酰胺,水杨酸或其苯并稠合衍生物和磷酰氯开始。通过相同的反应,从合适的二羟基苯二甲酸中,得到两个新结构类别的一些化合物:2,7-二氨基苯并[1,2- b:4,5 - b '] dipyran-4,9-二酮和2,8-二氨基合成了-4 H,6 H-苯并[1,2- b:5,4 - b ']双吡喃-4,6-二酮。 胺-色酮-杂环-一锅合成-吡喃