{"title":"C–C bond-forming reactions of 2-isocyanobiphenyl·BX3 adducts: spontaneous construction of polycyclic heteroaromatics","authors":"Yu-Tsen Kuo, Chia-Yu Yao, Yi-Hung Liu, Mu-Jeng Cheng, Jeffrey M. Farrell","doi":"10.1039/d5dt00210a","DOIUrl":null,"url":null,"abstract":"The syntheses and reactivities of 2-isocyanobiphenyl·BX<small><sub>3</sub></small> adducts (X = I, Br, Cl) are reported. These adducts undergo unexpected C–H bond-functionalizing cyclization upon heating, yielding phenanthridinium-6-trihaloborate zwitterions. Where X = Cl, an unexpected helical polycyclic boronium salt is formed <em>via</em> a competing pathway. Mechanistic details are probed experimentally and computationally.","PeriodicalId":71,"journal":{"name":"Dalton Transactions","volume":"87 1","pages":""},"PeriodicalIF":3.5000,"publicationDate":"2025-03-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Dalton Transactions","FirstCategoryId":"92","ListUrlMain":"https://doi.org/10.1039/d5dt00210a","RegionNum":3,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q2","JCRName":"CHEMISTRY, INORGANIC & NUCLEAR","Score":null,"Total":0}
引用次数: 0
Abstract
The syntheses and reactivities of 2-isocyanobiphenyl·BX3 adducts (X = I, Br, Cl) are reported. These adducts undergo unexpected C–H bond-functionalizing cyclization upon heating, yielding phenanthridinium-6-trihaloborate zwitterions. Where X = Cl, an unexpected helical polycyclic boronium salt is formed via a competing pathway. Mechanistic details are probed experimentally and computationally.
期刊介绍:
Dalton Transactions is a journal for all areas of inorganic chemistry, which encompasses the organometallic, bioinorganic and materials chemistry of the elements, with applications including synthesis, catalysis, energy conversion/storage, electrical devices and medicine. Dalton Transactions welcomes high-quality, original submissions in all of these areas and more, where the advancement of knowledge in inorganic chemistry is significant.