A study on chemical behaviors of some 4-pyrones synthesized by one-step reactions towards various amines
作者:Ahmet Şener、Siddik Eskinoba、İshak Bildirici、Hasan Genç、Rahmi Kasimoǧullari
DOI:10.1002/jhet.5570440209
日期:2007.3
intermediate during one-step reaction between excess benzoylacetone and oxalylchloride to C=C double bond of cyclic enol form of benzoylacetone gave 3-acetyl-5-benzoyl-6-methyl-2-phenyl-4(4H)-pyrone 1a. Condensation reactions of 1a together with 3,5-dibenzoyl-2,6-diphenyl-4(4H)-pyrone 1b and 3-benzoyl-5-ethoxycarbonyl-2,6-diphenyl-4(4H)-pyrone 1c with two-fold excess primary amines provided a series of 3
在过量苯甲酰丙酮和草酰氯之间的一步反应中,作为中间体原位生成的乙酰苯甲酰乙烯酮环加成至苯甲酰丙酮的环状烯醇式C = C双键,得到3-乙酰基-5-苯甲酰基-6-甲基-2-苯基-4 (4 H)-吡喃酮1a。的缩合反应1A连同-3,5-二苯甲酰基-2,6-二苯基-4-(4- ħ)吡喃酮1B和3-苯甲酰基-5-乙氧羰基-2,6-二苯基-4-(4- ħ)吡喃酮1C与两倍过量的伯胺提供了一系列的3-苯甲酰基-1-烷基-5-(1-烷基亚氨基-乙基)-6-苯基-2-甲基-4-(1- ħ) -吡啶酮2,3,5-二苯甲酰基-1-烷基-2,6-二苯基-4(1H)-吡啶酮3a-c和3-苯甲酰基-1-烷基-5-乙氧基羰基-2,6-二苯基-4(1 H)-吡啶酮3d,e衍生物。另外,尽管正戊基胺与不对称吡喃酮衍生物1a长时间反应,可得到对称的吡啶酮衍生物即3,5-二苯甲酰基-2,6-二甲基-1-戊基-4(1 H)-吡啶