文献类型：期刊文献

英文题名：Intramolecular Halogen Bonds Assist in Activating Carbonyl Groups for the Catalytic Synthesis of Bis(indolyl)methanes

作者：Hou, Yingying[1,2];Zhu, Lin[1,2];Liu, Taiyou[1,2];Wang, Limin[1,2];Wang, Ruimin[3,4];Englert, Ulli[3,4];Han, Jianwei[1,2]

机构：[1]East China Univ Sci & Technol, Sch Chem & Mol Engn, Key Lab Adv Mat, 130 Meilong Rd, Shanghai 200237, Peoples R China;[2]East China Univ Sci & Technol, Inst Fine Chem, Feringa Nobel Prize Scientist Joint Res Ctr, Sch Chem & Mol Engn, 130 Meilong Rd, Shanghai 200237, Peoples R China;[3]Rhein Westfal TH Aachen, Inst Inorgan Chem, D-52056 Aachen, Germany;[4]Shanxi Univ, Inst Mol Sci, Taiyuan 030006, Peoples R China

年份：2025

卷号：20

期号：18

外文期刊名：CHEMISTRY-AN ASIAN JOURNAL

收录：;EI(收录号：20253719139878);WOS:【SCI-EXPANDED(收录号:WOS:001564624500001)】；

基金：The work was supported by National Nature Science Foundation of China (NSFC 22478117), the Natural Science Foundation of Shanghai (20ZR1413500) and the One Hundred-Talent Program of Shanxi Province (R. W. and U. E.). The authors thank Research Center of Analysis and Test of East China University of Science and Technology for the help on the characterization. Mr. Lifeng Chu is acknowledged for his effort on the preparation of this manuscript.

语种：英文

外文关键词：Carbonyl activation; Halogen bond; Hydrogen bond; Organocatalysis

摘要：Ortho-carboxyl substitution increases the acidity of hypervalent diaryliodonium salts and makes them useful catalysts in the synthesis of bis(indolyl)methanes under mild conditions, with yields up to 98%. The halogen bond-assisted hydrogen bonding was demonstrated by crystal structure analysis. The interaction distance of 2.619 & Aring; between I(III) and the carboxyl O atom indicates either a long covalent or a very short halogen bond; analysis of the electron density shows the latter description is appropriate.