Diels-Alder Reactions of (1H-Indol-3-yl)-enacetamides and -endiacetamides: A Selective Access to Acetylamino-Functionalized [b]Annelated Indoles and Carbazoles
作者:Ulf Pindur、Christian Otto、Michel Molinier、Werner Massa
DOI:10.1002/hlca.19910740406
日期:1991.6.19
Diels-Alder reactions of the (1H-indol-3-yl)-enacetamides and -endiacetamides 1a–d with some carbodieno-philes and 4-phenyl-3H-1,2,4-triazole-3,5(4H)-dione give rise to the novel amino-functionalized carbazole; 4–6 and 8 (Scheme 3). Ethenetetracarbonitrile reacts with 1b to furnish the Michael-type adduct 7 (Scheme 3). Structural aspects of the starting materials 1, which exhibit above all 3-vinyl-1H-indole
狄尔斯-阿尔德的(1反应ħ -吲哚-3-基)-enacetamides和-endiacetamides 1A - d与一些carbodieno-philes和4-苯基-3- ħ -1,2,4-三唑-3,5-(4- H)-二酮产生新的氨基官能化咔唑;4 – 6和8(方案3)。与Ethenetetracarbonitrile发生反应1B,得到的迈克尔型加成物7(流程3)。原材料1的结构方面,首先表现出3-乙烯基-1 H关于Diels - Alder过程的预测,讨论了对吲哚的反应性。