Preparation of Amino(diethoxyphosphoryl)acetic Esters. Catalytic Hydrogenation of Diazo Compounds to Amines
作者:Chihiro Shiraki、Hiromitsu Saito、Keiichi Takahashi、Chikahiro Urakawa、Tadashi Hirata
DOI:10.1055/s-1988-27591
日期:——
tert-Butyl amino(diethoxyphosphoryl)acetate (2a) is prepared on a multigram scale from tert-butyl diethoxyphosphorylacetate (1a) in a facile two-step synthesis. The method involves the formation of diazo derivative 4 and subsequent catalytic hydrogenation. Compound 2a is also synthesized by reduction of the oxime derivative 3. Direct amination of diethoxyphosphorylacetic esters with chloramine gives other types of esters 2b-e in addition to the tert-butyl ester 2a.
tert-丁基
氨基(二乙
氧基
磷酸)
乙酸酯(2a)是通过二步简便合成法从tert-丁基二乙
氧基
磷酸乙酸酯(1a)制备的,规模达到多克。该方法涉及
叠氮衍
生物4的形成及随后的催化
氢化。化合物2a还可以通过对
肟衍
生物3的还原合成。此外,通过与
氯胺进行直接胺化反应,二乙
氧基
磷酸乙酸酯还可合成其他类型的
酯2b-e,除了tert-丁基
酯2a之外。