合成方法:已开发出一种新的,选择性的Pd催化的2-炔基苯甲醛与吲哚的多米诺反应,用于合成5 H-苯并[ b ]咔唑-6-基酮。室温下,吲哚会俘获异苯并吡啶鎓配合物,从而生成3‐(1 H‐异色素n ‐1‐基)‐1 H‐吲哚,可通过提纯将其转变为5 H‐苯并[ b ]咔唑-6‐基酮温度(请参阅方案)。这些酮表现出强烈的荧光并与金属离子相互作用以增强荧光强度。
Facile synthesis of 5H-benzo[b]carbazol-6-yl ketones via sequential reaction of Cu-catalyzed Friedel–Crafts alkylation, iodine-promoted cyclization, nucleophilic substitution and aromatization
作者:Jing Wu、Dongping Wang、Haolong Wang、Fan Wu、Xincheng Li、Boshun Wan
DOI:10.1039/c4ob00815d
日期:——
A convenient method to access 5H-benzo[b]carbazol-6-ylketones via a sequential Cu-catalyzed Friedel–Crafts alkylation reaction of indoles with 2-(2-(alkynyl)benzylidene)malonates and iodine-promoted electrophilic cyclization followed by nucleophilic substitution and aromatization was developed. The products of the functional 5H-benzo[b]carbazol-6-ylketones were obtained with up to 98% yield.
一种方便的方法,该方法可通过连续的Cu催化的吲哚与2-(2-(炔基)亚苄基)丙二酸酯的碘化物的连续Fried-Crafts烷基化反应来获得5 H-苯并[ b ]咔唑-6-基酮,然后进行碘促进的亲电环化反应通过亲核取代和芳构化得到了发展。以高达98%的产率获得了功能性5 H-苯并[ b ]咔唑-6基酮的产物。
PdCl2-Catalyzed Domino Reactions of 2-Alkynylbenzaldehydes with Indoles: Synthesis of Fluorescent 5H-Benzo[b]carbazol-6-yl Ketones
作者:Ri-Yuan Tang、Jin-Heng Li
DOI:10.1002/chem.201000133
日期:2010.4.26
selective Pd‐catalyzed dominoreaction of 2‐alkynylbenzaldehydes with indoles has been developed for the synthesis of 5H‐benzo[b]carbazol‐6‐yl ketones. The isobenzopyrylium complex is trapped by indole at room temperature to give 3‐(1H‐isochromen‐1‐yl)‐1H‐indoles, which can be transformed into 5H‐benzo[b]carbazol‐6‐yl ketones by raising the temperature (see scheme). These ketones exhibit intense fluorescence
合成方法:已开发出一种新的,选择性的Pd催化的2-炔基苯甲醛与吲哚的多米诺反应,用于合成5 H-苯并[ b ]咔唑-6-基酮。室温下,吲哚会俘获异苯并吡啶鎓配合物,从而生成3‐(1 H‐异色素n ‐1‐基)‐1 H‐吲哚,可通过提纯将其转变为5 H‐苯并[ b ]咔唑-6‐基酮温度(请参阅方案)。这些酮表现出强烈的荧光并与金属离子相互作用以增强荧光强度。
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。