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

roghayyeh khanivar

maria merajoddin

masoud kazem-rostami

mohammad mahdi ahmad-zadeh

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.

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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

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.

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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

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.

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Journal title:
iranian journal of catalysis

Publisher: islamic azad university, shahreza branch

ISSN 2252-0236

volume 2

issue 3 2012

Keywords
[ ' b r ø n s t e d a c i d i c i o n i c l i q u i d ' , ' t r i e t h y l a m i n e ' , ' b o n d e d s u l f o n i c a c i d { [ e t 3 n ' , ' s o 3 h ] c l } ' , 1 2 , ' a r y l ' , 8 , 9 , 1 0 , 1 2 , ' t e t r a h y d r o b e n z o [ a ] x a n t h e n ' , 1 1 , ' o n e ' , 2 , ' n a p h t h o l ' , ' a r y l a l d e h y d e ' , ' d i m e d o n e ( 5 ' , 5 , ' d i m e t h y l c y c l o h e x a n e ' , 1 , 3 , ' d i o n e ) ' ]

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