作者:Larissa S. Lima、Luiz Cláudio de A. Barbosa、Elson S. de Alvarenga、Antônio J. Demuner、Antônio A. da Silva
DOI:10.1071/ch02032
日期:——
reduces the growth of broad-leaf plants. The 3,5-dimethoxybenzylic alcohol (3) was used as starting material for the synthesis of 2-methoxy-6-(non-1-yl)benzo-1,4-quinone (9) in 69% yield. Acetylation of (9) with acetic anhydride gave the triacetate (10) in 82% yield. The triacetate (10) was then converted in two steps in 2-hydroxy-5-methoxy-3-(non-1-yl)benzo-1,4-quinone (11) and 2-acetoxy-5-methoxy-3-(non-1-yl)benzo-1
Sorgoleone (1) 是高粱根系分泌物的主要成分之一。Sorgoleone 是一种化感化学物质,可减少阔叶植物的生长。3,5-二甲氧基苯甲醇 (3) 用作合成 2-甲氧基-6-(非-1-基)苯并-1,4-醌 (9) 的原料,产率为 69%。(9)用乙酸酐乙酰化得到三乙酸酯(10),产率为82%。然后将三乙酸酯 (10) 分两步转化为 2-羟基-5-甲氧基-3-(非-1-基)苯并-1,4-醌 (11) 和 2-乙酰氧基-5-甲氧基-3- (non-1-yl)benzo-1,4-quinone (12),产率分别为 8% 和 37%。还通过(12)与DBU反应得到醌(11),产率为63%。(3) 的烷基化和用铬酸酐氧化形成新的醌 (16) (17) 和 (18),总产率分别为 23%、16% 和 12%。