Background:
Lemon peel powder was used as a natural catalyst for the synthesis of biscoumarins
and 3,4-dihydropyrano[c]chromene derivatives. The catalyst is natural, biodegradable, environmentally
benign and thus contributes a valuable addition to the existing sustainable methods for the
synthesis of coumarin derivatives.
Objective:
Development of Green synthesis and use of Natural catalyst.
Methods:
Lemon peel powder was used as a natural, biodegradable, environmentally benign heterogenous
catalyst for the synthesis of coumarin derivatives.
Results:
Natural lemon peel powder was successfully used as a heterogeneous catalyst for the synthesis
of coumarin based heterocyclic compounds.
Conclusion:
In conclusion, an environmentally benign, green and one-pot multicomponent protocol
has been developed for the synthesis of biscoumarins and 3,4-dihydropyrano[c]chromene derivatives
using lemon peel powder as a natural and biodegradable catalyst. Lemon peel being natural, the present
approach is sustainable and will highlight the emerging applications of natural resources for synthetic
organic transformations. This protocol offers several advantages such as high yields, clean reaction
conditions, and no pollution threat to the environment making it a useful and attractive process for the
synthesis of coumarin derivatives.
One-pot four component synthesis of novel 3-furyl coumarin derivatives