Triethylamine-bonded sulfonic acid {[Et3N-SO3H]Cl} as an efficient and homogeneous catalyst for the synthesis of 12-aryl-8,9,10,12-tetrahydrobenzo[a]xanthen-11-ones

Authors

• Abdolkarim Zare ¹
• Roghayyeh Khanivar ²
• Maria Merajoddin ³
• Masoud Kazem-Rostami ⁴
• Mohammad Mahdi Ahmad-Zadeh ²
• Ahmad Reza Moosavi-Zare ⁵
• Alireza Hasaninejad ⁶

1. Department of Chemistry, Payame Noor University, PO Box 19395-3697, Tehran, Iran
2. Department of Chemistry, Payame Noor University, PO BOX 19395-4697, Tehran, Iran
3. Department of Chemistry, Payame Noor University, Iran.
4. Young Researchers Club, Takestan Branch, Islamic Azad University, Takestan, Iran.
5. Department of Chemistry, Sayyed Jamaleddin Asadabadi University, Asadabad, 6541861841, Iran.
6. Department of Chemistry, Faculty of Sciences, Persian Gulf University, Bushehr 75169, Iran

Abstract

Brønsted acidic ionic liquid triethylamine-bonded sulfonic acid {[Et3N-SO3H]Cl} efficiently catalyzes the one-pot multi-component condensation of 2-naphthol with arylaldehydes and dimedone (5,5-dimethylcyclohexane-1,3-dione) under solvent-free conditions to afford 12-aryl-8,9,10,12-tetrahydrobenzo[a]xanthen-11-ones in high yields and relatively short reaction times.

Keywords

• 10. 12-tetrahydrobenzo[a]xanthen-11-one
• 2-Naphthol
• Bronsted acidic ionic liquid
• Triethylamine-bonded sulfonic acid {[Et3N-SO3H]Cl}
• 12-Aryl-8
• 9