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Title
Japanese:Asymmetric synthesis of planar-chiral paracyclophanes by double C-S bond formation: comparison of catalytic activity and enantioselectivity of Pd and Rh catalysts. 
English:Asymmetric synthesis of planar-chiral paracyclophanes by double C-S bond formation: comparison of catalytic activity and enantioselectivity of Pd and Rh catalysts. 
Author
Japanese: Tomoko Hori, Yu Shibata, 田中健.  
English: Tomoko Hori, Yu Shibata, Ken Tanaka.  
Language English 
Journal/Book name
Japanese:Tetrahedron: Asymmetry 
English:Tetrahedron: Asymmetry 
Volume, Number, Page Vol. 21    No. 9-10    pp. 1303-1306
Published date 2010 
Publisher
Japanese:Elsevier Ltd. 
English:Elsevier Ltd. 
Conference name
Japanese: 
English: 
Conference site
Japanese: 
English: 
DOI https://doi.org/10.1016/j.tetasy.2010.04.008
Abstract The authors have detd. that a cationic palladium(II)/(R)-BINAP complex is able to catalyze enantioselective double C-S bond-forming reactions between dithiols and dibenzyl dibromides leading to planar-chiral dithiaparacyclophanes. Although the yields and ee values of the palladium(II)-catalyzed syntheses of dithiaparacyclophanes did not exceed the previously reported cationic rhodium(I)/(S)-BINAPHANE complex-catalyzed ones, the palladium(II)-catalyzed reactions allowed the use of com. available and inexpensive (R)-BINAP as a ligand. On the other hand, an almost racemic product was obtained by using a cationic rhodium(I)/(R)-BINAP complex as a catalyst. [on SciFinder(R)]

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