作者:Alan R. Katritzky、Richard A. Barcock、Qui-He Long、Marudai Balsubramanian、Nageshwar Malhotra、John V. Greenhill
DOI:10.1055/s-1993-25838
日期:——
A new method has been developed for the regioselective preparation of enaminones and dienaminones starting from N-[1-(4-methylphenylamino)ethyl]benzotriazole employing mild conditions. Thus, 1-substituted 3-(4-methylphenylamino)-2-propen-1-ones, 1-(4-methylphenylamino)-1-hexen-3-one, ethyl 3-(4-methylphenylamino)-2-propenoate, 1-cyclohexyl-5-(phenylamino)-2,4-pentadien-1-one and ethyl 5-(arylamino)-2,4-pentadienoates are prepared in good yields.
以 N-[1-(4-甲基苯基氨基)乙基]苯并三唑为起始原料,采用温和的条件,开发了一种区域选择性制备烯酮和二烯酮的新方法。从而以良好的收率制备出 1-取代的 3-(4-甲基苯基氨基)-2-丙烯-1-酮、1-(4-甲基苯基氨基)-1-己烯-3-酮、3-(4-甲基苯基氨基)-2-丙烯酸乙酯、1-环己基-5-(苯基氨基)-2,4-戊二烯-1-酮和 5-(芳基氨基)-2,4-戊二烯酸乙酯。