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China Surfactant Detergent & Cosmetics ›› 2018, Vol. 48 ›› Issue (11): 627-631.doi: 10.13218/j.cnki.csdc.2018.11.005

• Development and application • Previous Articles     Next Articles

Synthesis of benzoxanthene catalyzed by functionalized ionic liquids [C3SO3Hnhm]HSO4

TANG Xiao-fang, LIU Xian-ming, ZHOU Si-yan, LI Shuang   

  1. Chemical Engineering Institute,Taizhou College of Science and Technology,Nanjing University of Science and Technology,Taizhou,Jiangsu 225300,China
  • Received:2018-04-18 Online:2018-11-22 Published:2019-03-18

Abstract: A solvent-free synthesis of benzoxanthene was operated,in which functionalized acidic ionic liquids,4-(3-propanesulfonic acid) morphinehydrogen sulfate [C3SO3Hnhm]HSO4 were used as catalysts,andβ-naphthol and aromatic aldehyde were used as raw materials.The reaction conditions were optimized by the single factor experiment and orthogonal experiment,and the reusability of the ionic liquid catalyst was also studied.The results show that when the dosage of benzaldehyde is 0.005 mol,the molar ratio ofβ-naphthol to benzaldehyde is 2∶1,and the catalyst is in an amount corresponding to 6% of benzaldehyde,the yield can reach more than 91% after reaction for 10 min at 100 ℃.The catalytic activity of [C3SO3Hnhm]HSO4 was not significantly reduced for being reused 5 times.This work has provided a new method for green synthesis of benzoxanthene compounds.

Key words: functionalized acidic ionic liquid, catalyze, benzoxanthene

CLC Number: 

  • TQ423