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        Synthesis  2008(23): 3869-3873  
DOI: 10.1055/s-0028-1083217
   DOI: 10.1055/s-0028-1083217
PSP
© Georg Thieme Verlag
      Stuttgart ˙ New YorkRuthenium-Catalyzed Enantioselective Propargylation of Indoles with Propargylic Alcohols
Further Information
            
               
                  
                        
                              Received
                              28 July 2008 
                      
Publication Date:
06 November 2008 (online)
            
         
      
   Publication History
Publication Date:
06 November 2008 (online)

Abstract
Ruthenium-catalyzed enantioselective propargylation of 1-(triisopropylsilyl)-1H-indoles with propargylic alcohols gives the corresponding β-propargylated indoles in good yields with high enantioselectivity. Reactions with 1-(1-naphthyl)prop-2-yn-1-ol achieve the highest enantioselectivity (up to 95% ee).
Key words
asymmetric synthesis - Friedel-Crafts alkylation - ruthenium - indoles - propargylic alcohols
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