Generation of 3-(1H-Isochromen-1-yl)-1H-indole via Silver Triflate-Catalyzed Tandem Reaction of 2-Alkynylbenzaldehyde with Indole
摘要:
A facile and efficient method is developed for synthesis of 3-(1H-isochromen-1-yl)-1H-indole via silver triflate-catalyzed tandem reaction of 2-alkynylbenzaldehyde with indole. The reaction proceeds smoothly in DMF at room temperature with good substrate generality. The availability of the starting materials combined with mild reaction conditions and the high efficiency of this synthetic route would be attractive and beneficial for the focused library construction.
A facile and efficient method is developed for synthesis of 3-(1H-isochromen-1-yl)-1H-indole via silver triflate-catalyzed tandem reaction of 2-alkynylbenzaldehyde with indole. The reaction proceeds smoothly in DMF at room temperature with good substrate generality. The availability of the starting materials combined with mild reaction conditions and the high efficiency of this synthetic route would be attractive and beneficial for the focused library construction.
Synthesis of Benzocyclohepta[<i>b</i>]indoles by Lewis Acid Catalyzed Annulation of Two 3-(1<i>H</i>-Isochromen-1-yl)-1<i>H</i>-indoles
作者:Ye-Xiang Xie、Ri-Yuan Tang、Ren-Jie Song、Jian-Nan Xiang、Jin-Heng Li
DOI:10.1021/jo4024667
日期:2014.1.17
A novel Lewis acidcatalyzedannulation reaction has been established for the synthesis of benzocyclohepta[b]indoles. This method represents a new annulation strategy to a seven-membered carbocyclic ring system from two 3-(1H-isochromen-1-yl)-1H-indole molecules using Cu(OTf)2 catalyst; moreover, the products, benzocyclohepta[b]indoles, can be used as the rapid mercuric ion colorimetric detection reagents
建立了一种新型的路易斯酸催化环化反应,用于合成苯并环庚[ b ]吲哚。该方法代表了使用Cu(OTf)2催化剂从两个3-(1 H-异色n-1-基)-1 H-吲哚分子到七元碳环系统的新环化策略;另外,苯并环庚[ b ]吲哚类产品可以用作快速汞离子比色检测试剂。