Syntheses of Reductones. A New Method of Synthesizing 2-Acetoxy-1, 3-dicarbonyl Compounds
作者:Noboru Sugiyama、Makoto Yamamoto、Tadao Takano、Choji Kashima
DOI:10.1246/bcsj.40.2909
日期:1967.12
2-Acetoxy-l, 3-dicarbonyl compounds were synthesized by two methods, one consisting of the condensation of 1, 3-dicarbonyl compounds with an electrophilic reagent, followed by acetoxylation. By this method three new compounds, ethyl 5-phenyl-2-acetoxy-3-oxopentanoate (XVII), ethyl 5, 5-diphenyl-5-hydroxy-2-acetoxy-3-oxopentanoate (XVIII), and ethyl 2-acetoxy-3-oxoheptanoate (XIX), were obtained. The other method consisted of the acetoxylation of 1, 3-dicarbonyl compounds, followed by condensation. By this method three other new compounds, 6-phenyl-6-hydroxy-3-acetoxy-2,4-dioxohexane (IV), 6-phenyl-6-hydroxy-3-acetoxy-2,4-dioxo-hexane (VIII), and 6-phenyl-3-acetoxy-2, 4, 6-trioxohexane (X), were obtained.
2-乙酰氧基-l, 3-二羰基化合物是通过两种方法合成的,其中一种方法是将 1, 3-二羰基化合物与亲电试剂缩合,然后进行乙酰氧基化反应。通过这种方法得到了三种新化合物,即 5-苯基-2-乙酰氧基-3-氧代戊酸乙酯(XVII)、5, 5-二苯基-5-羟基-2-乙酰氧基-3-氧代戊酸乙酯(XVIII)和 2-乙酰氧基-3-氧代庚酸乙酯(XIX)。另一种方法是对 1,3-二羰基化合物进行乙酰氧基化,然后进行缩合。通过这种方法得到了另外三种新化合物:6-苯基-6-羟基-3-乙酰氧基-2,4-二氧代己烷(IV)、6-苯基-6-羟基-3-乙酰氧基-2,4-二氧代己烷(VIII)和 6-苯基-3-乙酰氧基-2,4,6-三氧代己烷(X)。