An expeditious and atom-economic synthesis of lead-like, medicinally important 4,5-dihydropyrazolo[1,5-a]pyrazin-6-ones
Keywords: اتصال سونوگاشیرا; Propargylamine; Sonogashira coupling; Ynone; Pyrazole; Intramolecular alkylation; Atom efficiency; Lead-likeness; Privileged structure;