文献类型：期刊文献

英文题名：Facile Syntheses of N-Heterocyclic Carbene Precursors through I2- or NIS-Promoted Amidiniumation of N-Alkenyl Formamidines

作者：Li, Jing[1,2];Jiao, Jiajun[1,2];Zhang, Caiyun[1,2];Shi, Min[1,2,3];Zhang, Jun[1,2]

机构：[1]East China Univ Sci & Technol, Sch Chem Mol Engn, Key Lab Adv Mat, 130 Mei Long Rd, Shanghai 200237, Peoples R China;[2]East China Univ Sci & Technol, Sch Chem Mol Engn, Inst Fine Chem, 130 Mei Long Rd, Shanghai 200237, Peoples R China;[3]Chinese Acad Sci, Shanghai Inst Organ Chem, State Key Lab Organometall Chem, 354 Fenglin Rd, Shanghai 200032, Peoples R China

年份：2016

卷号：11

期号：9

起止页码：1361

外文期刊名：CHEMISTRY-AN ASIAN JOURNAL

收录：;EI(收录号：20161602262273);WOS:【SCI-EXPANDED(收录号:WOS:000379516700008)】；

基金：Financial support from Shanghai Pujiang Talent Program (11J1402500) and the National Natural Science Foundation of China (21171056) is gratefully acknowledged.

语种：英文

外文关键词：alkenes; iodine; iodoamination; N-heterocyclic carbenes; N-iodosuccinimide

摘要：We have developed I-2- or N-iodosuccinimide (NIS)-mediated amidiniumation of N-alkenyl formamidines for the syntheses of cyclic formamidinium salts, some of which could be directly used as N-heterocyclic carbene (NHC) precursors. Treatment of iodine-containing formamidinium salts with Al2O3 led to the formation of cyclic formamidinium salts with an unsaturated backbone. A rhodium(I) complex ligated by a representative NHC was prepared by the reaction of [Rh(cod)Cl](2) (cod= 1,5-cyclooctadiene) with the free carbene obtained in situ from deprotonation of the corresponding formamidinium salts. The NHCs prepared in situ can also react with S-8 to afford the corresponding thiones.