Indium(III)-Catalyzed Cyclization of Aromatic 5-Enynamides: Facile Synthesis of 2-Aminonaphthalenes, 2-Amino-1<i>H</i>-indenes, and 2,3-Dihydro-1<i>H</i>-indeno[2,1-<i>b</i>]pyridines
作者:Ming-Chang P. Yeh、Chia-Jung Liang、Hsiao-Feng Chen、Yu-Ting Weng
DOI:10.1002/adsc.201500449
日期:2015.10.12
efficient synthesis of 2-aminonaphthalenes and 2-amino-1H-indenes from aromatic N-methyl-N-tosyl-ynamides bearing an ortho-vinyl and -isobutenyl group, respectively. The aromatic N-3-arylpropargylynamides bearing an ortho-gem-dihalovinyl subunit underwent a tandem cyclization/carbobromination reaction in the presence of indium tribromide to provide the dibrominated 2,3-dihydro-1H-indeno[2,1-b]pyridine
研究了铟(III)催化的芳香族5-乙酰胺的环化反应。三氟甲磺酸铟能够分别由带有邻-乙烯基和-异丁烯基的芳族N-甲基-N-甲苯磺酰基-酰胺酰胺有效地合成2-氨基萘和2-氨基-1 H-茚。在三溴化铟存在下,带有邻位-二卤代戊二酰基亚基的芳族N -3-芳基炔丙炔基酰胺进行串联环化/碳溴化反应,以提供二溴代的2,3-二氢-1 H-茚并[2,1 - b ]吡啶衍生品收益率高。