Reactions of alkyl 2-benzylidene-2-polyfluoroacylacetates with N,N-dinucleophiles
作者:M. V. Pryadeina、Ya. V. Burgart、M. I. Kodess、V. I. Saloutin、O. N. Chupakhin
DOI:10.1023/b:rucb.0000042284.03940.41
日期:2004.6
Alkyl 2-benzylidene-2-polyfluoroacylacetates react with urea and thiourea to yield 5-ethoxycarbonyl-4-fluoroalkyl-4-hydroxy-6-phenylhexahydropyrimidin-2-ones and -2-thiones and with guanidine sulfate to form 2-amino-5-ethoxycarbonyl-4-fluoroalkyl-6-phenyl-1,6-dihydropyrimidines and 3,6-diethoxycarbonyl-2,7-difluoroalkyl-4,5-diphenyl-4,5-dihydro-1H-pyrido[1,2-a]pyrimidines, and they react with phenylhydrazine
烷基 2-benzylidene-2-polyfluoroacylacetates 与尿素和硫脲反应生成 5-ethoxycarbonyl-4-fluoroalkyl-4-hydroxy-6-phenylhexahydropyrimidin-2-ones 和 -2-thiones,并与硫酸胍形成 2-amino-5 -乙氧基羰基-4-氟烷基-6-苯基-1,6-二氢嘧啶和 3,6-二乙氧基羰基-2,7-二氟烷基-4,5-二苯基-4,5-二氢-1H-吡啶并[1,2-a ]嘧啶,它们与苯肼反应得到 4-烷氧基羰基-3-氟烷基-3-羟基-1,5-二苯基吡唑烷。水合肼催化 3,5-二乙氧基羰基-2,6-二氟烷基-2,6-二羟基-4-苯基四氢吡喃的形成。当用无水肼和邻苯二胺处理时,这些酯裂解形成氟酰基酯和苯甲醛与二胺的缩合产物。