reported. The reaction proceeds via the cleavage of a carbon–hydrogen bond at the position ortho to an alkynylgroup, and no additives are needed. Platinum complexes bearing other common ligands, such as phosphines and NHCs, failed to promote this reaction, highlighting the utility of the silylene ligand in this reaction.
Rhodium-Catalyzed Dimerization of Diaryl Acetylenes in the Presence of Grignard Reagents: Synthesis of 1,2,3-Triphenyl Naphthalene Derivatives
作者:Pengcheng Qian、Fan Chen、Changduo Pan
DOI:10.1080/00397911.2011.580444
日期:2012.11
Abstract An efficient Rh-catalyzed dimerization of diaryl acetylenes was achieved in the presence of Wilkinson catalyst, AgF2, and 1.5 equivalent of PhMgBr in toluene, providing the 1,2,3-triaryl naphthalene derivatives in moderate to good yields. Supplemental materials are available for this article. Go to the publisher's online edition of Synthetic Communications to view the free supplemental file
Electrochemical Rhodium-Catalyzed C–H Cyclodimerization of Alkynes to Access Diverse Functionalized Naphthalenes: Involvement of Rh<sup>IV/V</sup> and Rh<sup>I</sup> Dual Catalysis
作者:Ziyi Guo、Junjie Zhang、Jitan Zhang、Meihua Xie
DOI:10.1021/acs.orglett.2c03122
日期:2022.10.28
The first electrochemical rhodium-catalyzedC–H cyclodimerization of alkynes for the direct construction of functionalized naphthalenes was reported. The practicality and synthetic value of this strategy were demonstrated by the readily accessible scale-up synthesis and transformation of the products. Detailed mechanistic studies evidenced that electricity played an important role during the electrochemical