Sequential three-component reactions: synthesis, regioselectivity and application of functionalized dihydropyridines (DHPs) for the creation of fused naphthyridines
作者:Abu T. Khan、Md. Musawwer Khan
DOI:10.1016/j.tetlet.2011.04.098
日期:2011.7
Facile and efficient synthesis of tetrasubstituted 1,4- and 1,6-dihydropyridines (DHPs) has been achieved by employing three-component domino reaction using dimethyl acetylenedicarboxylate (DMAD), aliphatic amines, and α,β-unsaturated aldehyde in the presence of 30 mol % trifluoroacetic acid. Interestingly, regioselectivity for the synthesis of 1,4-dihydropyridines can be increased by using 30 mol %
通过在乙炔存在下使用乙炔二羧酸二甲酯(DMAD),脂肪族胺和α,β-不饱和醛进行三组分多米诺反应,已经实现了四取代1,4-和1,6-二氢吡啶(DHP)的快速高效合成。 30mol%的三氟乙酸。有趣的是,通过使用30mol%的三氟甲磺酸可以提高合成1,4-二氢吡啶的区域选择性。另外,通过使用1,4-二氢吡啶,芳族醛和芳族胺,已经完成了涉及亚氨基-Diels-Alder反应的稠合萘啶衍生物的合成。