Synthesis of naphthoxazinone derivatives using silica-bonded 𝑆-sulfonic acid as catalyst under solvent-free conditions

Journal of Chemical Sciences

Khodabakhsh Niknam1¹  Parisa Abolpour¹ 

[1] Department of Chemistry, Faculty of Sciences, Persian Gulf University, Bushehr 75169 Iran$$

关键词: Silica-bonded propyl-𝑆-sulfonic acid;    naphthoxazinones;    aromatic aldehydes;    heterogeneous catalysts;    solid acids.;   

DOI  :  

来源: Indian Academy of Sciences

【 摘 要 】

Silica-bonded 𝑆-sulfonic acid is employed as a recyclable catalyst for the synthesis of naphthoxazinone derivatives from the reaction of 𝛽-naphthol, aromatic aldehydes and urea at 150°C under solvent-free conditions. The heterogeneous catalyst was recycled for five runs after the reaction of 𝛽-naphthol, benzaldehyde and urea without losing its catalytic activity.

【 授权许可】

Unknown