作者:H. Mostafavi、R. Najjar、E. Maskani
DOI:10.1007/s10600-013-0628-7
日期:2013.7
The synthesis of several coumarin Mannich bases is described. The reaction of natural 7-hydroxycoumarin with primary amines and two equivalents of formaldehyde in the presence of a base catalyst was studied. Several novel N-substituted angular 9,10-dihydro-2H,8H-chromeno[8,7-e][1,3]oxazin-2-ones were synthesized. Different aliphatic and aromatic amines have been used in the reaction, and the corresponding products were obtained with moderate to relatively good yields.
描述了几种香豆素曼尼希碱的合成。研究了天然7-羟基香豆素与伯胺和两当量甲醛在碱催化剂存在下的反应。合成了几种新型N-取代角9,10-二氢-2H,8H-色并[8,7-e][1,3]恶嗪-2-酮。反应中使用了不同的脂肪族和芳香族胺,得到了相应的产物,收率中等至较好。