งานวิจัย/ผลงานทางวิชาการ

@article{Khumraksa2014,
title = {Ultrasound-assisted solventless synthesis of amines by in situ oxidation/reductive amination of benzyl halides},
author = {Bannarak Khumraksa, Wong Phakhodee and Mookda Pattarawarapan},
url = {http://pubs.rsc.org/en/content/articlelanding/2014/ra/c4ra02969k#!divAbstract},
doi = {10.1039/C4RA02969K},
year = {2014},
date = {2014-04-25},
journal = {RSC Advances},
volume = {4},
number = {39},
pages = {20454-20458},
abstract = {Ultrasound-assisted solventless oxidation/reductive amination of benzyl halides was developed as a facile, efficient, and environmental friendly method toward N-alkylated amines. Aldehydes were formed in situ by oxidation of organic halides with N-methylmorpholine N-oxide (NMO), followed by direct reductive amination with amines using sodium borohydride and montmorillonite K-10 catalyst as the reducing system. This green and simple procedure enables N-alkylated amines to be prepared in good to excellent yields with high selectivity of the monoalkylation.},
keywords = {},
pubstate = {published},
tppubtype = {article}
}

@article{Khumraksa2013,
title = {Rapid oxidation of organic halides with N-methylmorpholine N-oxide in an ionic liquid under microwave irradiation},
author = {Bannarak Khumraksa, Wong Phakhodee, Mookda Pattarawarapan},
url = {http://www.sciencedirect.com/science/article/pii/S0040403913002104},
doi = {doi:10.1016/j.tetlet.2013.01.131},
year = {2013},
date = {2013-04-10},
journal = {Tetrahedron Letters},
volume = {54},
number = {15},
pages = {1983–1986},
abstract = {A simple and rapid method for the conversion of organic halides into carbonyl derivatives is developed via microwave-assisted oxidation with N-methylmorpholine N-oxide in an ionic liquid. A variety of halide substrates are oxidized to the corresponding products in good to excellent yields in short reaction times. The ionic liquid is recovered and reused in several reaction cycles without any significant loss in activity.},
keywords = {},
pubstate = {published},
tppubtype = {article}
}

@article{Rattanaburi2002,
title = {Synthesis and applications of Fe3O4-diisopropylaminoacetamide as a versatile and reusable magnetic nanoparticle supported N,N-diisopropylethylamine equivalent},
author = {Parintip Rattanaburi, Bannarak Khumraksa, Mookda Pattarawarapan},
url = {http://www.sciencedirect.com/science/article/pii/S0040403912004789},
doi = {doi:10.1016/j.tetlet.2012.03.063},
year = {2012},
date = {2012-05-30},
journal = {Tetrahedron Letters},
volume = {53},
number = {22},
pages = {2689–2693},
abstract = {A magnetic nanoparticle supported N,N-diisopropylaminoacetamide (Fe3O4-DIPA) was developed for application as a magnetic recoverable, and reusable N,N-diisopropylethylamine equivalent. The Fe3O4 nanoparticles were coated with a silica layer using the sol-gel method, followed by surface modification with 3-aminopropyltriethoxysilane. Subsequent acylation with chloroacetyl chloride and chlorine displacement with diisopropylamine afforded Fe3O4-DIPA in 90% yield with a loading of 0.96 mmol/g. The applicability of Fe3O4-DIPA was demonstrated in the synthesis of amine derivatives cv sulfonation, acylation, and N-alkylation reactions. The desired products were obtained in excellent yields and purities after scavenging the residual starting amines by treatment with silica-supported dichlorotriazine. Fe3O4-DIPA was readily recovered by separation using a magnet and could be reused several times without significant loss of reactivity.
},
keywords = {},
pubstate = {published},
tppubtype = {article}
}