作者:Mutsumi Hamado、Kazu Kurosawa
DOI:10.1246/bcsj.53.2630
日期:1980.9
The reaction of 3-hydroxyflavones (1a–d) with lead(IV) acetate gave 1,2-diphenylethanediones (2a–d), 1,2-diphenyl-2-hydroxyethanones, 2-hydroxybenzoic acids (7 and 9), and benzoic acids (8 and 10), and the reaction with manganese(III) acetate yielded 2, 7, 8, 9, and 10. In addition to 2, 7, and 10, 6-methoxy-2-(4-methoxybenzoyloxy)-3(2H)-benzofuranone and 2-hydroxy-4-methoxybenzaldehyde were obtained in the reaction of 1c with manganese(III) acetate. It has been established by the studies of 14C-labelled compounds that the C(3) in the 3-hydroxyflavone was lost during the reaction.
3-羟基黄酮(1a–d)与醋酸铅(IV)反应生成了1,2-二苯乙二酮(2a–d)、1,2-二苯基-2-羟基乙酮、2-羟基苯乙酸(7和9)以及苯乙酸(8和10),与醋酸锰(III)反应则生成了2、7、8、9和10。除了2、7和10外,还在1c与醋酸锰(III)反应中获得了6-甲氧基-2-(4-甲氧基苯酰氧)-3(2H)-苯并呋喃酮和2-羟基-4-甲氧基苯甲醛。通过对14C标记化合物的研究已确定,3-羟基黄酮中的C(3)在反应过程中被消耗。