作者:John D Reynolds、Robert G Brinson、Cynthia S Day、Paul B Jones
DOI:10.1016/j.tetlet.2004.02.041
日期:2004.3
The chemistry of strained dihydroanthraquinones was investigated for the purpose of developing syntheses for highly strained anthraquinones. The reaction of (1,4-dihydro-9,10-dioxo-anthracen-1-yl)-acetates with triethylamine under aerobic conditions was found to be dependent on the degree of substitution on the acetate. Dihydroanthraquinones bearing dimethylacetates underwent elimination of enolate
为了开发高度紧张的蒽醌的合成,研究了紧张的二氢蒽醌的化学性质。发现(1,4-二氢-9,10-二氧代蒽-1-基)乙酸盐与三乙胺在好氧条件下的反应取决于乙酸盐上的取代度。带有二甲基乙酸酯的二氢蒽醌仅进行烯醇消除,而没有乙酸酯取代的二氢蒽醌则按预期方式脱氢。此外,由于竞争性的碘内酯化反应,使用碘氧化环己二烯环失败。通过用酸性乙醇处理所得内酯,可以低产率制备所需的应变蒽醌。