• Bulletin of the Korean Chemical Society
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• 제23권3호
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• pp.509-510
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• 2002

• 대한화학회지
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• 제59권6호
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• pp.551-553
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• 2015

• Bulletin of the Korean Chemical Society
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• 제30권1호
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• pp.23-24
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• 2009

• Bulletin of the Korean Chemical Society
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• 제27권10호
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• pp.1638-1640
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• 2006

A variety of chiral cyanohydrins were readily prepared from aldehydes with TMSCN under the influence of chiral titanium complex formed in situ from $Ti(O^iPr)_4$/TADDOL(I) in the presence of $Ph_3PO$ as additive. The double activation method produces trimethylsilylethers in excellent yield (95%) with moderate enantiomeric excess.

• Bulletin of the Korean Chemical Society
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• 제20권2호
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• pp.217-219
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• 1999

• Bulletin of the Korean Chemical Society
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• 제32권4호
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• pp.1263-1267
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• 2011

Novel binol-based uryl and guanidinium receptors having higher ring conjugation at the periphery of the hydrogen bonding donor sites have been synthesized and utilized to study the enantioselective recognition of 1,2-aminoalcohols and chirality conversion of natural amino acids via imine bond formation. There is a remarkable decrease in the stereoselectivites as the conjugation increases at the periphery of hydrogen bonding donor sites. The guanidinium-based receptors show more selectivity towards the amino alcohol than that of the uryl based ones due to its charge reinforced hydrogen bonds. The conversion efficiency of L-amino acids to Damino acids by the uryl-based receptors is higher than that of the guanidinium-based ones.

• Bulletin of the Korean Chemical Society
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• 제25권11호
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• pp.1621-1622
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• 2004

• Bulletin of the Korean Chemical Society
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• 제19권4호
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• pp.475-481
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• 1998

Details of various equilibria involved in the reactions of oxaza- and thiazazincolidine catalysts, generated from either β-amino alcohol or β-amino thiol, with aldehyde were studied by colligative measurements. The results indicated that the coordination of diethylzinc prior to the coordination of aldehyde is essential for high enantioselectivity of the thiol catalyzed reaction. The probable origin of asymmetric nonlinearity is also presented.

• 대한화학회지
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• 제47권6호
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• pp.597-600
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• 2003

Cinchona 알칼로이드(1-4)들을 비대칭 Reformatsky 반응에 키랄 리간드로 사용하였다. 알데히드, 리간드, Reformatsky 시약의 적가 순서에 따라 반응의 수율이 달라지며, Reformatsky 시약과 알데히드, 리간드와의 비율도 수율에 크게 영향을 주었다.

• Bulletin of the Korean Chemical Society
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• 제31권4호
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• pp.869-873
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• 2010

A series of novel chiral tert-amino alcohols 4a-h derived from enantiomerically pure phenylalanine were synthesized efficiently and used as chiral ligands in the catalytic enantioselective ethylation of aldehydes with diethylzinc (diethylzinc-to-aldehyde addition). The use of 10 mol % of the amino alcohols led to the corresponding sec-alcohols with excellent enantioselectivities (up to 100% ee) and high yields.