Butenolide annelation using a manganese(III) oxidation. A synthesis of 4-arylfuran-2(5H)-ones
作者:Ayhan S Demir、Nurettin Camkerten、Zuhal Gercek、Nese Duygu、Omer Reis、Elif Arikan
DOI:10.1016/s0040-4020(99)00036-8
日期:1999.2
A general procedure was developed for the annelation of a butenolide to an aromatic ketone that highlighted a manganese(III) oxidation of aromatic ketones. The oxidation of aromatic ketones with manganese(III) acetate in the presence of 2-bromoacetic acid or the Mn(II) salt of this carboxylic acid provided a regioselectively convenient synthesis of 2-(2-bromoacetoxy) ketones. An Arbuzov or Wittig reaction
开发了将丁烯内酯与芳香族酮成环反应的通用程序,该程序突出了芳香族酮的锰(III)氧化。在2-溴乙酸或该羧酸的Mn(II)盐存在下,用乙酸锰(III)氧化芳香族酮提供了区域选择性的2-(2-溴乙酰氧基)酮的合成。2-(2-溴乙酰氧基)酮的Arbuzov或Wittig反应,然后环化,可提供高收率的4-芳基呋喃-2(5 H)-酮。