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        Synlett  2004(6): 1059-1063  
DOI: 10.1055/s-2004-822900
   DOI: 10.1055/s-2004-822900
LETTER
© Georg Thieme Verlag Stuttgart · New YorkNew Ring Expansion of Cyclobutanones: Synthesis of Pyrrolinones, Pyrrolidines and Pyrroles
Further Information
            
               
                  
                        
                              Received
                              19 January 2004 
                      
Publication Date:
01 April 2004 (online)
            
         
      
   Publication History
Publication Date:
01 April 2004 (online)

Abstract
2,2-Dichlorocyclobutanones reacted with various amines to give ring opening leading to 4,4-dichlorobutanamides. These compounds proved to be suitable substrates for the synthesis of 3-pyrrolin-2-ones, 2-pyrrolidinones, pyrrolidines and pyrroles.
Key words
cyclobutanones - ring opening - ring expansion - pyrroles - heterocycles
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