• Bulletin of the Korean Chemical Society
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• v.31 no.3
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• pp.704-707
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• 2010

• Bulletin of the Korean Chemical Society
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• v.34 no.9
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• pp.2594-2596
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• 2013

Highly chemo- and regioselective reaction of hydroxybenzenes with ${\alpha},{\beta}$-unsaturated compounds in acidic ionic liquid l-butyl-3-methylimidazolium hydrogen sulphate ([BMIM]HSO4) was reported for the first time. A series of oxa-Michael adducts and Friedel-Crafts alkylated products were synthesized with good yields. The acidic ionic liquid could be easily recycled for at least 5 times with only minor loss in activity.

• Journal of the Korea Academia-Industrial cooperation Society
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• v.7 no.6
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• pp.1308-1312
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• 2006

4-Cyano-3,5-difluorophenol, useful as intermediate in the manufacturing of liquid crystals, was prepared by the regioselective iodination of 3,5-difluorophenol to give 4-iodo-3,5-difluorophenol, which was then converted to 4-cyano-3,5-difluorophenol under a mild reaction condition. The reaction products were characterized by spectroscopic methods and confirmed by comparison of these analytical data with reported values in the literatures.

• Bulletin of the Korean Chemical Society
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• v.32 no.spc8
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• pp.2869-2870
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• 2011

• Bulletin of the Korean Chemical Society
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• v.32 no.4
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• pp.1387-1390
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• 2011

• Bulletin of the Korean Chemical Society
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• v.33 no.4
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• pp.1371-1374
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• 2012

• 한국전기화학회:학술대회논문집
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• 1999.04a
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• pp.27-27
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• 1999

• Bulletin of the Korean Chemical Society
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• v.13 no.5
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• pp.551-553
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• 1992

An efficient and very short synthesis of epoxy alcohol 5, a key intermediate for leukotriene synthesis, was described. The key reaction involves the regioselective benzylidene acetal formation from methyl 5,6,7-trihydroxyheptanoate 1.

• Proceedings of the PSK Conference
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• 2003.04a
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• pp.242.2-243
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• 2003

We have developed the novel one-pot synthetic method for regioselective N-protected amines, carbamates as a protective group of amines, through the reaction of various ethers with chlorosulfonyl isocyanate (CSJ). This synthetic method provides a simple and convenient alternative for the formation of carbamates, such as -NHMoc, -NHPoc. -NHCbz, -NHPnz, -NHTroc and -NHAloc, by varying the alkyl moiety of ethers. (omitted)

• Proceedings of the PSK Conference
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• 2003.10b
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• pp.183.1-183.1
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• 2003

The synthesis of various cyclic carbamate compounds and amino alcohols has attracted attention in the past because of their potential as antibiotics, antitumor, analgenics, anticonvulsants. Several methods for the preparation of cyclic carbamate compounds have previously been reported including the use of heterocumulenes. We have recently described the novel synthetic method for N-protected amines from various ethers using Chlorosulfonyl isocyanate(CSI) and found that the mechanism of our CSI reaction is a competitive reaction of $S_N1$ and $S_ Ni$ mechanisms according to the stability of carbocation intermediates. (omitted)