Ester compounds, liquid crystal compositions and liquid crystal display devices
Liquid crystalline compounds suitable for driving at a low voltage and at a wide temperature range, and suitable for high speed response, liquid crystal compositions comprising the compound, and liquid crystal display devices comprising the liquid crystal
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(2008/06/13)
A simple and efficient synthesis of an Asp-Gly dipeptide mimetic
Alkylation of Nα-Boc protected aspartic acid with allyl bromide in the presence of lithium bis(trimethylsilyl)amide (LHMDS) and hexamethylphosphoramide (HMPA) afforded chiral β-allyl substituted aspartic acid in good yields. After deprotection of the Nα-Boc group and reprotection as a trifluoroacetamide, the terminal alkene was oxidized to an aldehyde. The aldehyde was then coupled with L-cysteine through a cascade three-bond formation process to afford aspartic acid-glycine bicyclic dipeptide mimetics.
Ndungu, John M.,Gu, Xuyuan,Gross, Dustin E.,Ying, Jinfa,Hruby, Victor J.
p. 3245 - 3247
(2007/10/03)
ESTER COMPOUNDS, LIQUID CRYSTAL COMPOSITIONS AND LIQUID CRYSTAL DISPLAY DEVICES
The present invention is to provide liquid crystalline compounds suitable for driving at a low voltage and at a wide temperature range, and are suitable for high speed response, to provide liquid crystal compositions comprising the compound, and to provid
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(2008/06/13)
(Trifluoroacetyl)benzotriazole: A Convenient Trifluoroacetylating Reagent
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Katritzky, Alan R.,Yang, Baozhen,Semenzin, Delphine
p. 726 - 728
(2007/10/03)
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