[chemical substances]
Count: 378c;28s
   reactive intermediates
  Count: 74c;14s
     Class dipolar compounds
    Count: 20c;1s
       Class 1,3-dipolar compounds
      Count: 13c;1s
         Class Allyl type 1,3-dipolar compounds [X=Y+-Z <-> X-+Y=Z <-> X+YZ- <-> X-YZ+ (X,Z=C,N,O; Y=N,O)]
        Count: 7c
           Class azomethine imides [R2C=N(R)+-NR <-> R2C-+N(R)=NR]
          Count: -