Facile synthesis of 4-arylidene-5-imidazolinones as synthetic analogs of fluorescent protein chromophore
作者:Cheng-Yu Lee、Yun-Chung Chen、Hao-Chun Lin、Yuandong Jhong、Chih-Wei Chang、Ching-Hua Tsai、Chai-Lin Kao、Tun-Cheng Chien
DOI:10.1016/j.tet.2012.04.102
日期:2012.7
A facile and effective synthesis for a wide variety of 4-arylidene-5-imidazolinone derivatives was developed. 4-Arylidene-5-oxazolinones were prepared by Erlenmeyer azlactone synthesis from N-acylglycines and arylaldehydes. The ring-opening reactions of the 4-arylidene-5-oxazolinones with primary amines afforded 2-acylamino-3-arylacrylamides in excellent yields. A new dehydrative cyclization of the
开发了一种简便而有效的合成方法,用于合成各种4-亚芳基-5-咪唑啉酮衍生物。通过N-酰基甘氨酸和芳基醛的Erlenmeyer丁二酸内酯合成来制备4-亚芳基-5-恶唑啉酮。4-亚芳基-5-恶唑啉酮与伯胺的开环反应以优异的产率提供了2-酰基氨基-3-芳基丙烯酰胺。吡啶中2-酰基氨基-3-芳基丙烯酰胺在回流下的新脱水环化反应以良好的收率提供了相应的4-亚芳基-5-咪唑啉酮。