• Bulletin of the Korean Chemical Society
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• v.33 no.4
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• pp.1337-1340
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• 2012

• Bulletin of the Korean Chemical Society
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• v.33 no.6
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• pp.2079-2082
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• 2012

• Bulletin of the Korean Chemical Society
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• v.34 no.10
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• pp.3027-3032
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• 2013

Various phenol derivatives were synthesized in a one-pot reaction from MBH acetates and sodium diethyl oxalacetate via a [4C+2C] cyclization protocol. In addition, some pyridine derivatives could also be synthesized using the same starting materials, by isolating the $S_N2^{\prime}$ reaction intermediate and performing the cyclization with $NH_4OAc$.

• Bulletin of the Korean Chemical Society
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• v.33 no.6
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• pp.2023-2027
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• 2012

An efficient and practical synthesis of MBH adducts of aryl vinyl ketones was developed using DABCO and 4-nitrophenol as a proton donor. Addition of a proton donor and the use of excess amounts (3.0 equiv) of aldehydes were highly beneficial for the yields of MBH adducts of aryl vinyl ketones.

• Bulletin of the Korean Chemical Society
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• v.30 no.11
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• pp.2799-2802
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• 2009

• Bulletin of the Korean Chemical Society
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• v.33 no.11
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• pp.3817-3822
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• 2012

Various alkenylphosphonates were prepared via the palladium-catalyzed oxidative arylation of cinnamylphosphonates with arenes. The regioselectivity during the ${\beta}$-H elimination of the corresponding alkylpalladium intermediate was governed most likely by steric factors.

• Bulletin of the Korean Chemical Society
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• v.34 no.12
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• pp.3591-3596
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• 2013

The enantioselective aza-Morita Baylis Hillman reaction of nitroalkene and N-tosylimine catalyzed by thiourea-tertiary amine has been investigated using density functional theory. Enantioselectivity is dominated by the cooperative effect of non-covalent and weak covalent interactions imposed by different units of catalyst. As Lewis base, the tertiary amine unit activates nitroalkene via weak covalent bond. The weak covalent interaction orients the reaction in a major path with smaller variations of this bond. The aromatic ring unit activates N-tosylimine via ${\pi}-{\pi}$ stacking. The non-covalent interaction selects the major path with smaller changes of the efficient packing areas. Thiourea unit donates more compact H-bonded network for species of the major path. The calculated ee value in xylene solution phase (97.6%) is much higher than that in N,N-Dimethylformamide (27.2%). Our conclusion is also supported by NBO analysis.