Metal-Free-Catalyzed Three-Component [2+2+2] Annulation Reaction of [60]Fullerene, Ketones, and Indoles: Access to Diverse [60]Fullerene-Fused 1,2-Tetrahydrocarbazoles
作者:Jinliang Ma、Tong-Xin Liu、Pengling Zhang、Xuna Zhao、Guisheng Zhang
DOI:10.1021/acs.orglett.1c00195
日期:2021.3.5
annulation reaction of [60]fullerene has been developed for concise and efficient construction of novel [60]fullerene-fused 1,2-tetrahydrocarbazoles. Using inexpensive and readily available I2 as a catalyst, [60]fullerene, ketones, and indoles undergo a formal [2+2+2] annulation process to conveniently assemble diverse 1,2-tetrahydrocarbazoles. Mechanistic studies indicate that this reaction proceeds
[60]富勒烯的无金属催化多组分环化反应的第一个实例已经开发出来,用于简洁高效地合成新型[60]富勒烯稠合的1,2-四氢咔唑。使用便宜且容易获得的I 2作为催化剂,[60]富勒烯,酮和吲哚经历正式的[2 + 2 + 2]环合法,以方便地组装各种1,2-四氢咔唑。机理研究表明,该反应通过I 2促进的具有共轭二烯特征的3-乙烯基吲哚结构的生成而进行,然后环加成[60]富勒烯。