Copper-catalyzed synthesis of thiazol-2-yl ethers from oxime acetates and xanthates under redox-neutral conditions
作者:Zhongzhi Zhu、Xiaodong Tang、Jinghe Cen、Jianxiao Li、Wanqing Wu、Huanfeng Jiang
DOI:10.1039/c8cc00445e
日期:——
acetates and xanthates for the synthesis of thiazol-2-yl ethers with remarkable regioselectivity has been developed. Various oxime acetates, whether derived from aryl ketones or alkyl ketones, or natural product cores are suitable for this conversion. Unique dihydrothiazoles were also obtained when both reaction sites were methine. Mechanistic studies indicated that imino copper(III) intermediates were involved
新型的铜催化的肟肟酸酯和黄药酸酯的环化反应用于合成噻唑-2-基醚,具有显着的区域选择性。各种衍生自芳基酮或烷基酮的乙酸肟酯,或天然产物核均适用于该转化。当两个反应位点均为次甲基时,也获得了独特的二氢噻唑。机理研究表明,涉及亚氨基铜(III)中间体。另外,该方案在氧化还原中性条件下进行,不需要添加剂或配体。