Synthesis of New Pyrazolo[1,5-a]pyrimidine, Triazolo[4,3-a]pyrimidine Derivatives, and Thieno[2,3-b]pyridine Derivatives from Sodium 3-(5-Methyl-1-phenyl-1H-pyrazol-4-yl)-3-oxoprop-1-en-1-olate
Scheme 3
Synthesis of thieno[2,3-b]pyridines (15–18) and pyrido[2′,3′:3,4]pyrazolo[1,5-a]pyrimidine (20)