[The reaction of N-iminopyridinium ylides with ethyl  -chloroisocrotonate: syntheses of pyrazolo(1,5-a)pyridine derivatives].
D000179:Acrylates; D011720:Pyrazoles; D011725:Pyridines; D011726:Pyridinium Compounds / Q000138:chemical synthesis*; D013057:Spectrum Analysis
D000179:Acrylates; D011720:Pyrazoles; D011725:Pyridines; D011726:Pyridinium Compounds