TITLE:
Magnetic Nano Cobalt Ferrite Catalyzed Synthesis of 4H-Pyrano[3,2-h]quinoline Derivatives under Microwave Irradiation
AUTHORS:
Swathi Bandaru, Ravi K. Majji, Satyanarayana Bassa, Pandu N. Chilla, Ramesh Yellapragada, Sruthi Vasamsetty, Rajendra K. Jeldi, Raghu B. Korupolu, Paul D. Sanasi
KEYWORDS:
Synthesis of 4H-Pyrano[3, 2-h]quinoline Derivatives, Microwave Irradiation, Nano Cobalt Ferrite Catalyst
JOURNAL NAME:
Green and Sustainable Chemistry,
Vol.6 No.2,
May
11,
2016
ABSTRACT: A microwave irradiated magnetically separable nano cobalt ferrite
catalyzed green method for the synthesis of 4-phenyl-4H-pyrano[3,2-h]quinolin-2-amine
and 2-amino-4-phenyl-4H-pyrano[3,2-h] quinoline-3-carbonitrile derivatives
through cyclization of aromatic aldehyde, acetonitrile/malononitrile and
8-hydoxyquinoline is developed and presented in this paper. The cubic magnetic
cobalt ferrite nano particles were synthesized by sol-gel citrate precursor
method and characterized by FT-IR, XRD, SEM and TEM techniques and the
structures of the synthesized pyranoquinoline derivatives were assigned by IR,
MASS and 1H NMR techniques. The reaction is carried out in a
domestic microwave oven with a heat-resistant microwave safe glass container
with a lid.