Novel Regiocontrolled Protection of 1,2- and 1,3-Diols via Mild Cleavage of Methylene Acetals
作者:Hiromichi Fujioka、Kento Senami、Ozora Kubo、Kenzo Yahata、Yutaka Minamitsuji、Tomohiro Maegawa
DOI:10.1021/ol902088b
日期:2009.11.19
regiocontrolled protection of unsymmetrical 1,2- and 1,3-diols has been developed. Different types of protected diols are available from the methylene acetal in a one-pot procedure. Highly regioselective protection of diols with a silyl group at the less hindered hydroxy group as well as with a MOM group at the more hindered one were achieved. The reaction conditions are mild without affecting other functional
已经开发了不对称的1,2-和1,3-二醇的区域控制保护。一锅法可从亚甲基缩醛中获得不同类型的被保护的二醇。获得了对具有较低受阻羟基的甲硅烷基和受较受阻的羟基的MOM基团的二醇的高度区域选择性保护。反应条件温和,不影响包括酸不稳定功能在内的其他官能团。