Preparation of Keto Ethers of 5-Hydroxycyclooctanone via a Nonclassical Protection Method
作者:Paul Rademacher、Parveen Choudhary Mohr
DOI:10.1055/s-2007-1000854
日期:2008.1
Protection of the hydroxy group of the medium-ring hydroxy ketone, 5-hydroxycyclooctanone (1HK), can be achieved with an alcohol and hydrochloric acid, although the substrate predominately exists as the transannular hemiacetal 1HA. The reaction is explained by a mechanism, which includes a 1,5-hydride shift as an essential step.
中环羟基酮--5-羟基环辛酮(1HK)的羟基保护可通过醇和盐酸来实现,尽管底物主要以反式半缩醛 1HA 的形式存在。该反应的机理包括 1,5-酸酐转移这一基本步骤。