[bmim]bf4-licl as an effective catalytic system for the synthesis of dicoumarols

نویسندگان

seyyedeh cobra azimi

kurosh rad-moghadam

چکیده

a homogeneous ionic liquid 1-butyl-3-methylimidazolium tetrafluoroborate doped with licl ([bmim]bf4-licl) was found as catalyst solvents for the synthesis of dicoumarols by the condensation of 4-hydroxycoumarin and aldehyde at 80 ˚c. in this field, several types of aromatic aldehyde, containing electron-withdrawing groups as well as electron-donating groups, were rapidly changed to the corresponding derivatives in good to excellent yields. application of this new homogeneous catalyst system offered the advantages of short reaction times, solvent-free conditions, high yields, and easy work-up procedure compared to the conventional methods of the syntheses. the ionic liquid can be recovered for the subsequent reactions and reused without any loss of efficiency.

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منابع مشابه

[BMIm]BF4-LiCl as an effective catalytic system for the synthesis of dicoumarols

A homogeneous ionic liquid 1-butyl-3-methylimidazolium tetrafluoroborate doped with LiCl ([BMIm]BF4-LiCl) was found as catalyst solvents for the synthesis of dicoumarols by the condensation of 4-hydroxycoumarin and aldehyde at 80 ˚C. In this field, several types of aromatic aldehyde, containing electron-withdrawing groups as well as electron-donating groups, were rapidly changed to the correspo...

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[BMIm]BF4-LiCl: An effective catalytic system for the synthesis of pyrano[3,2-c]chromene and pyrano[4,3-b]pyrone derivatives

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[bmim]bf4-licl: an effective catalytic system for the synthesis of pyrano[3,2-c]chromene and pyrano[4,3-b]pyrone derivatives

an efficient and green method for the synthesis of pyrano[3,2-c]chromene or pyrano[4,3-b]pyrone derivatives is described by using a three-component condensation process of malononitrile, aldehyde, and 4-hydroxycoumarine or 4-hydroxypyrone in [bmim]bf4-licl as an ionic liquid.

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عنوان ژورنال:
iranian chemical communication

ناشر: payame noor university (pnu)

ISSN 2423-4958

دوره 3

شماره Issue 4, pp. 283-387 2015

کلمات کلیدی
[ ' h o m o g e n e o u s c a t a l y s t ' , 4 , ' h y d r o x y c o u m a r i n ' , ' i o n i c l i q u i d ' , ' d i c o u m a r o l s ' ]

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