Efficient access to novel tetra- and pentacyclic dihydroquinolin-2-ones by catalyst-free domino Knöevenagel hetero-Diels–Alder reactions from N-(2-formylphenyl)-N-methylcinnamamides and cyclic 1,3-dicarbonyls in water
作者:Mehdi Ghandi、Shahzad Feizi、Mohammad Taghi Nazeri、Behrouz Notash
DOI:10.1007/s13738-016-0968-x
日期:2017.1
An efficient catalyst-free synthesis of novel annulated hybrid derivatives of two known scaffolds, dihydroquinolinone and pyranopyranone, pyranopyrimidinedione, pyranocoumarin or chromenone is described. N-(2-Formylphenyl)-N-methylcinnamamides underwent a one-pot domino Knöevenagel hetero-Diels–Alder reaction with dimedone, N,N-dimethylbarbituric acid, 1,3-indanedione, 4-hydroxycoumarins and 4-hyd
描述了两种已知支架,二氢喹啉酮和吡喃并吡喃酮,吡喃并嘧啶二酮,吡喃香豆素或色酮的新型无环杂化衍生物的有效无催化剂合成。N-(2-甲酰基苯基)-N-甲基肉桂酰胺与二甲酮,N,N -N-二甲基巴比妥酸,1,3-茚满二酮,4-羟基香豆素和4-羟基-6-一锅多米诺Knöevenagel杂Diels-Alder反应。水中的甲基-2 H-吡喃-2-酮,以优异的产率提供所需的四环和五环吡喃喹啉酮。