Abstract

Layered double hydroxides (LDHs) are well established inorganic nanomaterials. They are of researcher’s interest due to their anion-exchange capability, high surface-to-volume ratio, enhanced basicity due to hydroxyl anions and lewis acidity due to different metal ions present in the lattice. Their compatibility with environmental friendly solvents like water and alcohol have attracted synthetic chemists to develop green protocol in organic catalysis reactions. Interestingly, there are no reports of utilizing NiAl LDHs as a catalyst for organic transformations in greener condition. In the present study, we have utilized NiAl LDHs as a catalyst for the synthesis of thioxo-dihydroquinazolinones from isatoic anhydride, hydrazides and carbon disulphide. We have synthesized ten thioxo-dihydroquinazolinones with product yield ranging from 77 to 90%. The synthesized thioxo-dihydroquinazolinones possessing differently substituted aryl groups and heterocyclic ring could become a good precursors to discover and develop a new drug molecules. Nontoxic catalyst with both acidic and basic sites, substrate scope, environmental friendly solvents, one-pot operation, simple starting materials, good yields and reusability of NiAl LDHs catalyst up to five cycles are notable features of the present protocol.

Title

Ismail

Publisher

warad

Publisher Country

Palestine

Publication Type

Prtinted only

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Year

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