highly efficient synthesis of carboacyclic nucleosides catalyzed by zinc oxide in 1-butyl-3-methylimidazolium bromide (zno/[bmim]br)

Authors

tarlan salehi-hamzehkhani

marzieh hatami

abdolkarim zare

ahmad reza moosavi-zare

abolfath parhami

abstract

michael addition of pyrimidine and purine nucleobases to substituted as well as unsubstituted α,β-unsaturated esters efficiently proceeds in the presence of catalytic amount of zinc oxide in ionic liquid 1-butyl-3-methylimidazolium bromide (zno/[bmim]br) under microwave irradiation to afford carboacyclic nucleosides, as biologically important compounds, in good to excellent yields and in short reaction times.

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Highly efficient synthesis of carboacyclic nucleosides catalyzed by zinc oxide in 1-butyl-3-methylimidazolium bromide (ZnO/[bmim]Br)

Michael addition of pyrimidine and purine nucleobases to substituted as well as unsubstituted α,β-unsaturated esters efficiently proceeds in the presence of catalytic amount of zinc oxide in ionic liquid 1-butyl-3-methylimidazolium bromide (ZnO/[bmim]Br) under microwave irradiation to afford carboacyclic nucleosides, as biologically important compounds, in good to excellent yields and in short ...

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Highly efficient synthesis of carboacyclic nucleosides catalyzed by zinc oxide in 1-butyl-3-methylimidazolium bromide (ZnO/[bmim]Br)

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1-Butyl-3-Methylimidazolium Bromide Promoted Selectively Oxidation of Sulfur Compounds by NaBrO3

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1-butyl-3-methylimidazolium bromide promoted selectively oxidation of sulfur compounds by nabro3

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Convenient method for the synthesis of symmetrical disulfides using 1-butyl- 3-methylimidazolium hydroxide in water

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Self-aggregation of 1-butyl-3-methylimidazolium bromide ([bmim]Br) in D(2)O has been investigated using NMR spectroscopy. The (1)H spin-lattice relaxation times (T(1)) of the [bmim](+) increased with the decrease of concentration in the range of 0.1-3.0 mol dm(-3) as expected, however, in contrast, the (1)H-T(1) decreased below 0.1 mol dm(-3). The estimated (13)C-activation energies indicated t...

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Journal title:

iranian journal of catalysis

Publisher: islamic azad university, shahreza branch

ISSN 2252-0236

volume 4

issue 4 2014

Keywords

[ ' c a r b o a c y c l i c n u c l e o s i d e ' , ' m i c h a e l a d d i t i o n ' , ' z i n c o x i d e ' , ' i o n i c l i q u i d ' , 1 , ' b u t y l ' , 3 , ' m e t h y l i m i d a z o l i u m b r o m i d e ( [ b m i m ] b r ) ' , ' m i c r o w a v e i r r a d i a t i o n ' ]

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