Concise synthesis of 3,4-dihydro-1,4-benzoxazines by three-component reactions of acyl chlorides, o-aminophenols and 1,2-dichloroethane
作者:Yunyun Liu、Xuwen Chen
DOI:10.1016/j.tet.2018.05.037
日期:2018.7
The Cu(OAc)2-catalyzed three-component reactions of o-aminophenols, acyl chlorides and 1,2-dichloroethane (DCE) have been established for the efficient synthesis of 3,4-dihydro-2H-benzo[b][1,4]oxazines (3,4-dihydro-1,4-benzoxazines). This method features advantages of the one-pot operation enabling N-acylation, CCl bond amidation and etherification, as well as the structural divergence of the synthesized
已经建立了Cu(OAc)2催化的邻氨基苯酚,酰氯和1,2-二氯乙烷(DCE)的三组分反应,可有效合成3,4-二氢-2 H-苯并[ b ] [ 1,4]恶嗪(3,4-二氢-1,4-苯并恶嗪)。该方法的优点在于一锅操作的优点是能够进行N-酰化,C Cl键酰胺化和醚化,以及合成产物的结构差异。