Allyl, Methallyl, Prenyl, and Methylprenyl Ethers as Protected Alcohols: Their Selective Cleavage with Diphenyldisulfone under Neutral Conditions
作者:Dean Marković、Pierre Vogel
DOI:10.1021/ol049135q
日期:2004.8.1
Diphenyldisulfone is a mild and efficient reagent for selective cleavage of methylprenyl (2,3-dimethylbut-2-en-1-yl), prenyl (3-methylbut-2-en1-yl), and methallyl (2-methylallyl) ethers. These reaction conditions are compatible with the presence of other protecting groups such as acetals, acetates, and allyl, benzyl, and TBDMS ethers. Exposure of 2,3-dimethylbut-2-en-1-yl and 3-methylbut-2-en1-yl ethers to diphenyldisulfone
二苯二砜是一种温和有效的试剂,用于选择性裂解甲基异戊烯基(2,3-二甲基丁-2-烯-1-基),异戊二烯基(3-甲基丁-2-烯-1-基)和甲基烯丙基(2-甲基烯丙基)醚。这些反应条件与其他保护基如缩醛,乙酸酯和烯丙基,苄基和TBDMS醚的存在相容。将2,3-二甲基丁-2-烯-1-基和3-甲基丁-2-烯-1-基醚暴露于二苯基二砜导致分别形成2,3-二甲基丁-1,3-二烯和异戊二烯。2-甲基烯丙基醚经历异构化为2-甲基丙烯基醚,其易于水解为相应的游离醇和异丁醛。[反应:看文字]