Iron-Catalyzed <i>gem</i>
-Specific Dimerization of Terminal Alkynes
作者:Qiuming Liang、Kimberly M. Osten、Datong Song
DOI:10.1002/anie.201700904
日期:2017.5.22
We report a gem-specific homo- and cross-dimerization of terminalalkynes catalyzed by a well-defined iron(II) complex containing Cp* and picolyl N-heterocyclic carbene (NHC) ligands, and featuring a piano-stool structure. This catalytic system requires no additives and is compatible with a broad range of substrates, including those with polar functional groups such as NH and OH.
Rhodium-Catalyzed Chemo- and Regioselective Cross-Dimerization of Two Terminal Alkynes
作者:Hua-Dong Xu、Ren-Wei Zhang、Xiaoxun Li、Suyu Huang、Weiping Tang、Wen-Hao Hu
DOI:10.1021/ol303531m
日期:2013.2.15
Cross-dimerization of terminal arylacetylenes and terminal propargylic alcohols/amides has been achieved in the presence of a rhodium catalyst. This method features high chemo- and regioselectivities rendering convenient and atom economical access to functionalized enynes.