Synthesis of naphthoxazinone derivatives using silica-bonded S-sulfonic acid as catalyst under solvent-free conditions
作者:KHODABAKHSH NIKNAm、PARISA ABOLPOUR
DOI:10.1007/s12039-015-0895-x
日期:2015.7
Silica-bonded S-sulfonic acid is employed as a recyclablecatalyst for the synthesis of naphthoxazinone derivatives from the reaction of ß-naphthol, aromatic aldehydes and urea at 150°C under solvent-free conditions. The heterogeneous catalyst was recycled for five runs after the reaction of ß-naphthol, benzaldehyde and urea without losing its catalytic activity. Silica-bonded S-sulfonic acid was employed
An efficient synthesis of naphtha[1,2-e]oxazinone and 14-substituted-14H-dibenzo[a,j]xanthene derivatives promoted by zinc oxide nanoparticle under thermal and solvent-free conditions
作者:G.B. Dharma Rao、M.P. Kaushik、A.K. Halve
DOI:10.1016/j.tetlet.2012.03.085
日期:2012.5
general synthetic route to the synthesis of 1,2-dihydro-1-arylnaphtho[1,2-e][1,3]oxazine-3-one and 14-substituted-14H-dibenzo[a,j]xanthenesderivatives has been developed using ZnO-NPs under thermal and solvent-freeconditions. The union of 2-naphthol, aldehyde, urea enabling the synthesis of naphtho[1,2-e][1,3]oxazinone and 2-naphthol, aldehyde gave dibenzo[a,j]xanthenes in excellent yields. This method
合成1,2-二氢-1-芳基萘并[1,2- e ] [1,3]恶嗪-3-酮和14-取代的14 H-二苯并[ a,j ]氧杂蒽衍生物的一般合成路线ZnO-NP是在无溶剂和无热条件下开发的。2-萘酚,醛,脲的结合使得能够合成萘[1,2- e ] [1,3]恶嗪酮和2-萘酚,醛以优异的产率得到了二苯并[ a,j ]黄嘌呤。该方法具有一些优点,如后处理简单,对环境无害,反应时间短以及产率高。