Noncryogenic I/Br−Mg Exchange of Aromatic Halides Bearing Sensitive Functional Groups Using <i>i-</i>PrMgCl−Bis[2-(<i>N</i>,<i>N</i>-dimethylamino)ethyl] Ether Complexes
作者:Xiao-jun Wang、Xiufeng Sun、Li Zhang、Yibo Xu、Dhileepkumar Krishnamurthy、Chris H. Senanayake
DOI:10.1021/ol052704p
日期:2006.1.1
[reaction: see text] Iodo- and bromoaromatics bearing sensitive carboxylicester and cyano groups underwent a selective halide-magnesium exchange with isopropylmagnesium chloride at ambient temperature in the presence of bis[2-(N,N-dimethylamino)ethyl] ether to afford the corresponding Grignardreagents. The newly formed reactive Grignardreagents were allowed to react with electrophiles such as trimethylborate
Sterically Controlled Isodesmic Late-Stage C–H Iodination of Arenes
作者:Manuel van Gemmeren、Mirxan Farizyan、Rita de Jesus、Jyotirmoy Dey
DOI:10.1039/d3sc00801k
日期:——
availability of the required starting materials. Herein, we describe the sterically controlled iodination of arenes through an isodesmic C–H/C–I bond metathesis approach enabled by our dual ligand-based catalysts for arene-limited nondirected C–H activation. The protocol gives direct access to a complementary product spectrum with respect to traditional methods. Its synthetic utility is demonstrated by