Syntheses of C2 anthraquinone aldehydes from the commercially availableanthraru¯n (1) have been investigated. A synthesis of the keto aldehyde(2) in nine steps and 73% overall yield was achieved. Syntheses of (2)exploiting selective oxidations of either a C-boundallyl group by Wacker oxidation to introduce the methyl keto functionality orof a C-bound prop-1-enyl moiety by dihydroxylation andoxidative cleavage to generate the C2 formyl group were also developed. Thealdehyde (27) was synthesized in seven steps and in 81% overall yieldfrom (1), and syntheses of the phenolic aldehydes (33), (34), and (35), the C1benzyloxy aldehyde (36) and the anthracene aldehyde (37) were also developed.
对商业可得到的蒽醌(1)进行了C2蒽醌醛的合成研究。通过九步反应,得到了酮醛(2),总产率为73%。还开发了利用Wacker氧化选择性氧化C-联苯丙基基团引入甲基酮基官能团或利用二羟基化和氧化解裂选择性氧化C-联丙烯基基团生成C2甲醛基团的(2)的合成方法。从(1)中,七步反应得到了醛(27),总产率为81%,并开发了酚醛(33)、(34)和(35)、C1苄氧基醛(36)和蒽醌醛(37)的合成方法。