作者:Anna Chentsova、Dmitry B. Ushakov、Peter H. Seeberger、Kerry Gilmore
DOI:10.1021/acs.joc.6b01634
日期:2016.10.7
α-nitro esters via the trapping of nitronium ions. The two-stage nitration and subsequent deacetylation of readily available 1,3-dicarbonyl compounds was achieved using a biphasic semicontinuous approach. α-Nitro esters and amides were obtained in good overall yields (53–84%). Some of the α-nitro-1,3-dicarbonyl intermediates exhibit enhanced reactivity and undergo an acid-catalyzed Nef-type reaction to
据报道是通过捕获硝基离子来合成α-硝基酯的一种安全,快速的方法。使用双相半连续方法可实现容易获得的1,3-二羰基化合物的两阶段硝化和随后的脱乙酰作用。以良好的总收率(53–84%)获得了α-硝基酯和酰胺。一些α-硝基-1,3-二羰基中间体表现出增强的反应性,并经历酸催化的Nef型反应生成α-氧代羰基。