One-pot synthesis of α-bromoesters and ketones from β-ketoesters and diketones using supported reagents system
作者:Tadashi Aoyama、Toshio Takido、Mitsuo Kodomari
DOI:10.1016/j.tetlet.2004.01.014
日期:2004.2
A simple and efficient method has been developed for the synthesis of α-bromoesters and ketones from β-ketoesters and diketones in one pot using a supported reagents system, CuBr2/Al2O3–Na2CO3/Al2O3, in which β-ketoester reacts first with CuBr2/Al2O3 and the product, α-bromo-β-ketoester, reacts with Na2CO3/Al2O3 to give the final product, α-bromoesters in good yields.
已开发出一种简单有效的方法,使用支持的试剂系统CuBr 2 / Al 2 O 3 -Na 2 CO 3 / Al 2 O 3在一个锅中由β-酮酸酯和二酮合成α-溴酸酯和酮,其中β-酮酸酯首先与CuBr 2 / Al 2 O 3反应,产物α-溴-β-酮酸酯与Na 2 CO 3 / Al 2 O 3反应以高产率得到最终产物α-溴酸酯。