1-Hydroxy-2-methyl-2-propyl Isocyanide (HMPI) as a New Convertible Isocyanide for the Ugi Four-Component-Coupling Reaction
作者:Masato Oikawa、Yutaro Sugamata、Manami Chiba、Koichi Fukushima、Yuichi Ishikawa
DOI:10.1055/s-0033-1338967
日期:——
The Ugi reaction is a useful four-component coupling reaction for α-(acylamino)amide. However, selective transformation of the two amides is generally difficult. Here, we report 1-hydroxy-2-methyl-2-propyl isocyanide (HMPI) as a new member of a ‘convertible isocyanide’ class used to solve the problem. HMPI is odorless and shows good reactivity in the Ugi reaction to give N -(1-hydroxy-2-methyl-2-propyl)
Ugi 反应是一种有用的 α-(酰氨基)酰胺的四组分偶联反应。然而,这两种酰胺的选择性转化通常是困难的。在这里,我们报告了 1-羟基-2-甲基-2-丙基异氰化物 (HMPI) 作为用于解决该问题的“可转化异氰化物”类的新成员。HMPI 无味,在 Ugi 反应中显示出良好的反应性,生成 N -(1-羟基-2-甲基-2-丙基)酰胺,在 Zn(OTf) 2 介导的溶剂解作用下顺利转化为酯。总体而言,通过使用 HMPI,可以通过两个步骤轻松获得结构多样的 α-氨基酸酯。