Merging a Negatively Curved Nanographene and a Carbon Nanoring  

作　　者：Yiqun Zhang Daiyue Yang Sai Ho Pun Han Chen Qian Miao 

机构地区：[1]Department of Chemistry,The Chinese University of Hong Kong,Shatin,New Territories,Hong Kong,China [2]Hong Kong Joint Laboratory in Chemical Synthesis,Shanghai Institute of Organic Chemistry,Chinese Academy of Science,Shanghai 230032,China [3]Key Laboratory of Organic Functional Molecules and Drug Innovation,School of Chemistry and Chemical Engineering,Henan Normal University,Xinxiang,Henan 453007,China

出　　处：《Precision Chemistry》2023年第2期107-111,共5页精准化学（英文）

基　　金：supported by the General Research Fund 14300919 from the Research Grant Council of Hong Kong and a Research Matching Grant from the University Grants Committee(Hong Kong).

摘　　要：Two molecular nanocarbons result from merging a negatively curved nanographene and a carbon nanoring in two constitutional isomers of D2 and C2v symmetry,respectively.They were synthesized by attachment o f C-shaped paraphenylene precurso rsto 2,11,18,27-tetrabromooctabenzo[8]circulene and the subsequent intramolecular Yamamoto coupling and reductive aromatization reactions.The flexible nature of octabenzo[8]circulene enabled two different ways of connection in the Yamamoto coupling reactions,leading to the two constitutional isomers.The D2 isomer is shaped like a figure eight,as revealed by X-ray crystallography,and is resolved into two enantiomers by chiral HPLC.The synthesis of the C2v isomer is regarded as a further step toward precision synthesis of carbon schwarzites through a bottom-up approach.

关 键 词：molecular nanocarbon negatively curved nanographene cycloparaphenylene synthesis carbon schwarzites 

分 类 号：O62[理学—有机化学]