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Title
Japanese:Highly Chemo-, Regio-, and Enantioselective Rhodium-Catalyzed Cross-Cyclotrimerization of Two Different Alkynes with Alkenes. 
English:Highly Chemo-, Regio-, and Enantioselective Rhodium-Catalyzed Cross-Cyclotrimerization of Two Different Alkynes with Alkenes. 
Author
Japanese: Jun Hara, Mana Ishida, Masayuki Kobayashi, Keiichi Noguchi, Ken. Tanaka.  
English: Jun Hara, Mana Ishida, Masayuki Kobayashi, Keiichi Noguchi, Ken. Tanaka.  
Language English 
Journal/Book name
Japanese:Angewandte Chemie, International Edition 
English:Angewandte Chemie, International Edition 
Volume, Number, Page Vol. 53    No. 11    pp. 2956-2959
Published date 2014 
Publisher
Japanese:Wiley-VCH Verlag GmbH & Co. KGaA 
English:Wiley-VCH Verlag GmbH & Co. KGaA 
Conference name
Japanese: 
English: 
Conference site
Japanese: 
English: 
DOI https://doi.org/10.1002/anie.201310336
Abstract A cationic rhodium(I)/(R)-tol-binap complex catalyzed the cross-cyclotrimerization of silylacetylenes R1C竕｡CH (R1 = Me3Si, Et3Si, PhCH2SiMe2), di-tert-Bu acetylenedicarboxylate, and enamides R2CH:CHCONR3R4 [R2 = H, Me, Et, n-Pr, i-Pr, Ph; R3 = R4 = Me, n-Bu; R3 = Me, R4 = MeO, Ph; R3R4 = (CH2)4] with excellent chemo-, regio-, and enantioselectivities to give the corresponding substituted cyclohexadienes I. Unsym. alkynoates can also be employed in place of di-tert-Bu acetylenedicarboxylate for this process, but with reduced chemoselectivity. [on SciFinder(R)]

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