Mild and efficient deprotection of the amine protecting p-methoxyphenyl (PMP) group
作者:Jorge M.M. Verkade、Lieke J.C. van Hemert、Peter J.L.M. Quaedflieg、Paul L. Alsters、Floris L. van Delft、Floris P.J.T. Rutjes
DOI:10.1016/j.tetlet.2006.09.044
日期:2006.11
Mild and efficient procedures for deprotection of the amine nitrogen protecting p-methoxyphenyl (PMP) group are described. Periodic acid and trichloroisocyanuric acid (TCCA) were found to be particularly effective in realizing amine liberation using 1 and 0.5 equiv of the oxidant, respectively. Extension of the periodic acid-mediated conditions to simultaneous alcohol oxidation by combination with
描述了用于保护胺氮保护的对-甲氧基苯基(PMP)基团的脱保护的温和而有效的程序。发现高碘酸和三氯异氰尿酸(TCCA)在分别使用1和0.5当量的氧化剂实现胺释放方面特别有效。通过与催化量的重铬酸钠组合,将高碘酸介导的条件扩展至同时进行醇氧化,可在一锅法中将PMP保护的曼尼希产物顺利转化为相应的β-氨基酸。