Ex parte GUIDO STEFFAN - Page 5




          Appeal No. 94-3474                                                          
          Application 07/956,126                                                      


          generators would have been understood by those skilled in the art           
          in the context of his disclosure at the time the application was            
          filed.                                                                      
                                                                                     
                                     Background                                       
               Appellant’s invention “relates to a free-radical process for           
          side chain chlorination or side chain bromination of methyl                 
          aromatic compounds...” [specification, page 1, lines 7-9].                  
          Appellant’s specification includes three embodiments                        
          (chlorinating 5-fluorotoluene-2,4-disulphonyl chloride, 4-                  
          methylbenzoyl chloride, and 2,3-dichloro-6-methylquinoxaline)               
          which are set forth in four examples.                                       
               Examples 1 and 2 are directed to chlorinating 5-fluoro-                
          toluene-2,4-disulphonyl chloride by treating it with chlorine gas           
          at temperatures ranging from 160E to 197EC. for 5 to 12 hours in            
          the presence of CsCl and KCl according to the following reaction            
          scheme:                                                                     









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