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  • Chem Sci Trans., 2017, 6(2),  pp 304-310  

    DOI:10.7598/cst2017.1345

    Research Article

    An Efficient Three Component Synthesis of 1H-Indazolo[2, 1-b]phthalazine-triones Catalyzed by Orthophosphoric Acid in Water-Phenol System

  • MANURI BRAHMAYYA*, REDDYMASU SREENIVASULU, CH.CHINA SATYANARAYANA, BATTULA VENKATESWARA RAO, K. N. SANTHI, M. V. RAGHUPATHIRAJU and M. VIJAYA
  • Department of Engineering Chemistry, Andhra University, Visakhapatnam-530 003, A.P., India
    Department Environamental Engineering Safety and Health, Hungkuang University, Taichung, Taiwan
    Department of Chemistry, Acharya Nagarjuna University, Guntur, India
    S K B R College, Department of Chemistry, Amalapuram, East Godavari Dist, A.P, India
    Chaitanya women?s College, Department of Zoology, Gajuwaka, Viskhapatnam, India
    Department of Chemistry, D.N.R.College, Bhimavaram, West Godavari, A.P, India
  • Abstract

    Simple method for the synthesis of 1H-Indazolo [2,1-b]phthalazine-triones via one pot three component condensation of phthalhydrazide, aldehyde and dimedone catalyzed by orthophosphoric acid in water-phenol system is reported. This synthetic procedure proves with extremely lower reaction timings, high yields, recyclable of catalyst and green solvent system.

    Keywords

    1H-Indazolo[2,1-b]phthalazinetrione, Multi component reactions, Orthophosphoric acid, Water-phenol system

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