Synthesis of Some Novel 2-Aryl- Substituted 2,3-Dihydroquinazolin-4(1H)-ones under Solvent-Free Conditions Using MCM-41-SO3H as a Highly Efficient Sulfonic Acid

[摘要]：MCM-41-SO3H, ordered mesoporous silica material MCM-41 with covalently anchored sulfonic acid groups located inside the mesochannels, was used as an acid catalyst for the rapid and 'green' synthesis of 2,3-dihydroquinazolin-4(1H)-one derivatives under solvent-free condition. This novel synthetic method offers several advantages, such as excellent yields, simple procedure, short reaction times, and mild reaction conditions.

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