Paper Title
Novel Synthesis of 4-Chloro-3-Methyl-1-Phenyl-1,4- Dihydrochromeno[2,3-c]Pyrazoles at AmbientTemperatures

Chromenopyrazoles have well-knownbiological activty.Pyrazoles serves as anti-inflammatory, antifungal, antitumor. Chromenes have a variety of biological activities including anti-bacterial, anti-hypertensive, anti-cancer and anti-HIV.Chromenopyrazoles reveal high activity against gram positive and gram negative bacteria.This is promoted use to synthesischromeno[2,3-c]pyrazoles. The method is based on the acid-catalyzed reaction ofpyrazolones with different phenols in conc. HCl at room temperature for 10-15 min. The products are obtained in excellent yield