Journal
CHEMISTRYSELECT
Volume 5, Issue 7, Pages 2306-2316Publisher
WILEY-V C H VERLAG GMBH
DOI: 10.1002/slct.201904356
Keywords
2; 3-dihydroquinazolin-4(1H)-ones; SBA-16; GPTMS-TSC-Cu-I; aldehyde; 2-aminobenzamide; solvent-free conditions
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Funding
- Ferdowsi University of Mashhad Research Council
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Herein a rapid, efficient, facile and environmentally benign synthesis of 2,3-dihydroquinazolin-4(1H)-ones using SBA-16/GPTMS-TSC-Cu-I (Cu-I anchored onto mesoporous SBA-16 functionalized by aminated 3-glycidyloxypropyltrimethoxysilane with thiosemicarbazid) is reported. The aforesaid mesostructured catalyst with a unique super-cage structure and narrow particle size distribution (3-7 nm) exhibited excellent catalytic activity in high yielding preparation of 2,3 dihydroquinazolin-4(1H)-ones from the condensation of 2-aminobenzamide and an aldehyde in solvent-free conditions. Furthermore, SBA-16/GPTMS-TSC-Cu-I as a heterogeneous catalyst was stable under reaction conditions and can be recycled at least five times without any loss of its catalytic efficiency.
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