A simple, efficient and green method for the preparation of naphthooxazinones employing easily available reagents 2-naphthol, aldehydes, urea and silica sulphuric acid (SSA) as catalyst is reported. The microwave assisted multi component reaction (MCR) procedure provides multiple advantages inclusive of short reaction times, high yields, easy work-up, catalyst recovery and reusability which proves to be environmentally benign. Studies on the antibacterial properties of the synthesized heterocyclic compounds have been done through in vitro methods against gram-positive and gram-negative bacteria.

中文翻译：

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二氧化硅硫酸催化绿色合成1,2-二氢-1-芳基萘[1,2-e] [1,3]-恶嗪-3-酮和1,2-二氢-1-甲基萘[1,2] -e] [1,3]-恶嗪-3-酮作为有效的抗菌剂

报道了一种使用容易获得的试剂2-萘酚，醛，尿素和二氧化硅硫酸（SSA）作为催化剂制备萘并恶嗪酮的简单，有效和绿色的方法。微波辅助多组分反应（MCR）程序具有多个优点，包括反应时间短，产率高，易于后处理，催化剂回收和可重复使用性，这被证明对环境无害。已经通过体外方法对革兰氏阳性和革兰氏阴性细菌进行了合成杂环化合物的抗菌性能的研究。