作者:Aiping Huang、Feng Liu、Chunjing Zhan、Yanli Liu、Chen Ma
DOI:10.1039/c1ob05936j
日期:——
A transition metal-free process for the regioselective synthesis of pyrrolo[1,2-a]quinoxalines under mild conditions in one-pot is described. The reaction afforded a variety of products in good to excellent yields. Indolo[1,2-a]quinoxalines were also synthesized from indole-2-carboxamides under the same conditions.
描述了在温和条件下在一锅中用于区域选择性合成吡咯并[1,2- a ]喹喔啉的无过渡金属工艺。该反应以良好至优异的产率提供了多种产物。在相同条件下,吲哚-2-羧酰胺也可以合成吲哚并[1,2- a ]喹喔啉。
Divergent synthesis of pyrrole carboxamides from pyrrole carboxaldehyde and formamides/amines <i>via</i> oxidative amidation involving pyrrole acyl radicals
作者:Joydev K. Laha、Surabhi Panday、J. Patrick Weber、Martin Breugst
DOI:10.1039/d3cc02766j
日期:——
A non-traditional approach for the synthesis of pyrrole carboxamides frompyrrole carboxaldehyde and formamides or amines with catalytic amounts of nBu4NI and TBHP as oxidants is reported herein. The method is operationally simple providing straightforward access to primary, secondary, and tertiary pyrrole carboxamides in good to excellent yields utilizing inexpensive reagents under mild conditions
本文报道了一种由吡咯甲醛和甲酰胺或胺以催化量的n Bu 4 NI和TBHP作为氧化剂合成吡咯甲酰胺的非传统方法。该方法操作简单,可在温和条件下利用廉价试剂以良好至优异的产率直接获得伯、仲和叔吡咯甲酰胺。与涉及离子反应的传统酰胺化不同,我们当前方法的机理研究揭示了 2- 或 3-吡咯酰基自由基的参与,否则很少假设。本方法的适用性在类药物化合物,即光学纯的碳依托咪酯酰胺的合成中得到进一步证明。
A transition metal-free tandem process to pyrrolopyrazino[2,3-d]pyridazine-diones
作者:Aiping Huang、Zhi Qiao、Xinhai Zhang、Wei Yu、Qingqing Zheng、Ying Ma、Chen Ma
DOI:10.1016/j.tet.2011.11.021
日期:2012.1
A transition metal-free tandem process for the synthesis of pyrrolopyrazino[2,3-d]pyridazine-diones is described. The process is an efficient construction of this tricyclic system by a one-pot coupling/Smiles rearrangement/cyclization approach. This methodology has potential applications in the synthesis of biologically and medicinally relevant compounds. (C) 2011 Elsevier Ltd. All rights reserved.
PYRROLOTRIAZINE ANILINE PRODRUG COMPOUNDS USEFUL AS KINASE INHIBITORS