Jhansi R. Sunkara and Sathish M. Botsa* Pages 72 - 79 ( 8 )
Background: Metal oxide or metal oxide composite nanoparticles are attaining tremendous importance due to their catalytic activities for various organic transformations.
Objective: To report the one-pot synthesis of xanthene derivatives prepared by ZnS-Fe2O3-Ag composite under solvent-free conditions.
Method: To prepare nanocomposite by a facile and simple hydrothermal approach.
Results: The prepared composite is smaller (17.56 nm) in size and can be easily separable, recycled and reused six times without any significant loss of catalytic activity with excellent yields. In short reaction time, great catalytic activity was perceived with no co-catalyst and any other activator.
Conclusion: In conclusion, ZnS-Fe2O3-Ag composite provides a simple, economical, efficient and greener method for the synthesis of one-pot multicomponent reaction of aldehyde with 1,3-diketones under solvent free conditions for the synthesis of 1,8-dioxooctahydro xanthenes. In short reaction time, great catalytic activity was perceived with no co-catalyst and any other activator.
ZnS-Fe2O3-Ag, hydrothermal, 1, 8-dioxooctahydro xanthenes, reusable, solvent free, hydrothermal.
Department of Physical, Nuclear Chemistry and Chemical Oceanography, Andhra University, Visakhapatnam-530003, National Centre for Polar and Ocean Research, Ministry of Earth Sciences, Goa-403804