brønsted acidic phosphonium based ionic liquid functionalized sba-15 [ho3s-phospil@sba-15]: green, recyclable, and efficient catalyst for the synthesis of pyrano[3,2-c]chromenone derivatives

Authors

mina saeedi

mohammad jeiroudi

leila ma’mani

mohammad mahdavi

eskandar alipour

abstract

the surface of sba-15 was modified by diphenylphosphine; then, it was treated with butane sultone and sulfuric acid to obtain brønsted acid ho3s-phosphonium based ionic liquid functionalized sba-15 with hso4- as a counteranion. it efficiently catalyzed synthesis of pyrano[3,2-c]chromenone derivatives through the reaction of 4-hydroxycoumarin and chalcones at 60 °c in water/ethanol. good yields, mild reaction conditions, and user-friendly procedure are advantages of this method. also, the catalyst could be easily separated and reused five times without significant reduction of activity.

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Journal title:

iranian journal of chemistry and chemical engineering (ijcce)

Publisher: iranian institute of research and development in chemical industries (irdci)-acecr

ISSN 1021-9986

volume 34

issue 4 2015

Keywords

[ ' c h a l c o n e s ' , ' f u n c t i o n a l i z e d s b a ' , 1 5 , 4 , ' h y d r o x y c o u m a r i n ' , ' p y r a n o [ 3 ' , 2 , ' c ] c h r o m e n o n e s ' , ' s u p p o r t e d i o n i c l i q u i d ' ]

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