Synthesis and Reactivity Profile of Ylidenemalononitrile Enamines and Their Ester Analogs Towards Electrophiles and Nucleophiles
作者:Ashley R. Longstreet、Daniel Rivalti、D. Tyler McQuade
DOI:10.1021/acs.joc.5b01169
日期:2015.9.4
Herein, we describe the synthesis and reactivity of enamines derived from ylidenemalononitriles and ylidenecyanoacetates. The enamine scope was expanded by (1) increasing yields of aldehyde-derived ylidenemalononitriles, (2) incorporating silyl functionalities, and (3) using other amide acetals to expand the substitution patterns of pyridines resulting from enamine cyclization. In addition, methods
在本文中,我们描述了衍生自亚甲基丙二腈和亚烷基氰基乙酸酯的烯胺的合成和反应性。通过(1)增加醛衍生的亚甲基丙二腈的产率,(2)结合甲硅烷基官能团,和(3)使用其他酰胺缩醛来扩大烯胺环化产生的吡啶的取代方式,来扩大烯胺的范围。另外,描述了由亚甲基丙二腈和亚烷基氰基乙酸酯两者制备α-吡喃酮和多取代的吡啶的方法。