Synthesis of substituted 6-amino-4-aryl-5-cyano-2h,4h-pyrano[2,3-c]pyrazoles. Crystal and molecular structure of 6-amino-5-cyano-3-methyl-4-(2′,4′,6′-triethylphenyl)-2h,4h -pyrano[2,3-c]pyrazole
Substituted 6-aminopyrano[2,3-c]pyazoles were synthesized by the two-component condensation of arylidenemalononitriles and substituted 5-pyazolones or three-component condensation of aromatic aldehydes, malononitrile, and substituted 5-pyazolones. It was