@article { ISI:000274424100003, title = {Mild, efficient, and regioselective monobromination of arylamines and phenols using [BBIm]Br-3 as a new reagent}, journal = {Synthetic Communications}, volume = {40}, number = {5}, year = {2010}, month = {APR}, pages = {PII 919083074}, publisher = {TAYLOR \& FRANCIS INC}, address = {325 CHESTNUT ST, SUITE 800, PHILADELPHIA, PA 19106 USA}, abstract = {

We report here an efficient method for the synthesis and characterization of the room-temperature ionic liquid 1,3-di-n-butylimidazolium tribromide ([BBIm]Br-3) (2) and its application as an efficient reagent and solvent for regioselective bromination of arylamines and phenols under mild conditions. The bromination was carried out in the absence of organic solvents, and in most cases, the only extraction solvent needed was water. The spent 1,3-di-n-butylimidazolium bromide (1) was easily recycled.

}, keywords = {Ionic liquid, monobromination, Regioselective, Solvent-free, [BBIm]Br3}, issn = {0039-7911}, doi = {10.1080/00397910903009430}, author = {Borikar, Sanjay P. and Daniel, Thomas and Paul, Vincent} } @article { ISI:000291262700018, title = {Aromatic bromination of aldehydes and ketones using 1,3-di-n-butylimidazolium tribromide [BBIm]Br3 ionic liquids under solvent-free conditions}, journal = {Journal of the Iranian Chemical Society}, volume = {8}, number = {2}, year = {2011}, month = {JUN}, pages = {531-536}, publisher = {SPRINGER}, address = {233 SPRING ST, NEW YORK, NY 10013 USA}, abstract = {

An environmentally benign and efficient process for the preparation of monobromo derivatives of aryl aldehydes and ketones was developed by simple and practical reactions of aryl aldehydes or ketones with 1,3-di-n-butylimidazolium tribromide ([BBIm]Br-3), as a brominating reagent under solvent-free conditions in very high yields. The process has several advantages: high conversions, short reaction time, mild reaction conditions, simple workup with good to quantitative yields and re-usable ionic liquid.

}, keywords = {Bromination, green chemistry, Ionic liquid, Solvent-free, [BBIm]Br-3}, issn = {1735-207X}, doi = {10.1007/BF03249087}, author = {Borikar, Sanjay P. and Daniel, Thomas} } @article { ISI:000291899200004, title = {Convenient and efficient protocol for the synthesis of acylals catalyzed by bronsted acidic ionic liquids under ultrasonic irradiation}, journal = {Ultrasonics Sonochemistry}, volume = {18}, number = {5}, year = {2011}, month = {SEP}, pages = {928-931}, publisher = {ELSEVIER SCIENCE BV}, address = {PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS}, abstract = {

The synthesis of acylals (1,1-diacetates) via the reactions of aldehydes with acetic anhydride was carried Out in 85-97\% yields at room temperature under ultrasound irradiation catalyzed by the Bronsted acidic ionic liquid [bmpy]HSO(4). This method provides several advantages, such as solvent-free conditions, operational simplicity, higher yields, and reduced environmental consequences. The ionic liquid was recovered and reused. (C) 2011 Elsevier B.V. All rights reserved.

}, keywords = {1, 1-Butyl-3-methylpyridinium hydrogen sulfate, 1-Diacetates, Acylals, Ionic liquid, Solvent-free, Ultrasonic irradiation}, issn = {1350-4177}, doi = {10.1016/j.ultsonch.2011.03.022}, author = {Borikar, Sanjay P. and Daniel, Thomas} }