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Title
Japanese:Commercially available liquid enol ethers and acetates as gaseous alkyne equivalents in cationic Rh(I)/BINAP-catalyzed chemo- and regioselective formal cross-alkyne cyclotrimerizations. 
English:Commercially available liquid enol ethers and acetates as gaseous alkyne equivalents in cationic Rh(I)/BINAP-catalyzed chemo- and regioselective formal cross-alkyne cyclotrimerizations. 
Author
Japanese: Hiromi Hara, Masao Hirano, Ken. Tanaka.  
English: Hiromi Hara, Masao Hirano, Ken. Tanaka.  
Language English 
Journal/Book name
Japanese:Tetrahedron 
English:Tetrahedron 
Volume, Number, Page Vol. 65    No. 26    pp. 5093-5101
Published date 2009 
Publisher
Japanese:Elsevier Ltd. 
English:Elsevier Ltd. 
Conference name
Japanese: 
English: 
Conference site
Japanese: 
English: 
DOI https://doi.org/10.1016/j.tet.2009.02.047
Abstract A cationic rhodium(I)/BINAP complex catalyzes partial intramol. [2+2+2] cycloaddns. of 1,6- and 1,7-diynes with enol ethers or a ketene acetal giving substituted benzenes, e.g. I, in good yields. The same catalyst also catalyzes complete intermol. [2+2+2] cycloaddns. of two different monoynes with enol acetates giving tri- and tetrasubstituted benzenes, e.g. II, in good yields with complete regioselectivity. Com. available liq. enol ethers and acetates can be used as versatile equiv. for gaseous alkynes in the present rhodium-catalyzed formal cross-alkyne cyclotrimerizations. [on SciFinder(R)]

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