- Dicyanamide Salts that Adopt Smectic, Columnar, or Bicontinuous Cubic Liquid-Crystalline Mesophases
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Although dicyanamide (i.e., [N(CN)2]?) has been commonly used to obtain low-viscosity, halogen-free, room-temperature ionic liquids, liquid-crystalline salts containing such anions have remained virtually unexplored. Here we report a
- Park, Geonhui,Goossens, Karel,Shin, Tae Joo,Bielawski, Christopher W.
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p. 6399 - 6411
(2018/04/19)
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- STABLE HOMOGENEOUSLY MIXED NANOSCALE COATINGS DERIVED FROM UNIQUE MULTI-FUNCTIONAL AND MULTIDENTATE AROMATIC ADSORBATES
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Novel tridentate-, bidentate-, and monodentate-based aromatic adsorbates including self-assembled monolayers (SAMs), especially, mixed multi-component SAMs, where the adsorbates comprise an aromatic ring including one head group or a plurality of dentate
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Paragraph 0076
(2014/01/08)
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- REAGENT FOR ORGANIC SYNTHESIS AND METHOD OF ORGANIC SYNTHESIS REACTION WITH THE REAGENT
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A reagent for organic synthesis with which a chemical reaction can be conducted in a liquid phase and unnecessary compound(s) can be easily separated at low cost from the liquid phase after completion of the reaction. The reagent for organic synthesis reversibly changes from a liquid-phase state to a solid-phase state with changes in solution composition and/or solution temperature, and is for use in organic synthesis reactions. This reagent for organic syntheses facilitates process development. With the reagent, research on and development of, e.g., medicines through, e.g., compound library synthesis, etc. can be accelerated. It can hence contribute to technical innovations in the biochemical industry and chemical industry.
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Page/Page column 19
(2009/01/24)
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- A novel protecting group for constructing combinatorial peptide libraries
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3,4,5-Tris(octadecyloxy)benzyl alcohol, HO-Bzl(OC18)3, was prepared from gallic acid and stearyl bromide. Using conventional step-wise elongation, N,C-protected peptides, Fmoc - AAn - ... - AA1 - OBzl(OC18)3, were synthesized. The substituted benzyl esters were selectively cleaved by a treatment with 4 M hydrogen chloride in ethyl acetate to give Fmoc - AAn - ... - AA1 - OH and HO - Bzl(OC18)3. Thus, the substituted benzyl group is effective for the protection of C-terminal carboxyl groups in liquid-phase peptide synthesis. Because the substituted benzyl group has a moderately high molecular weight, Fmoc - AAn - ... - AA1 - OBzl(OC18)3 can be easily purified by size-exclusion chromatography; all protected peptides are eluted in the void fraction of a Sephadex LH-20 gel-filtration column. The combination of the carboxyl-protecting group Bzl(OC18)3 with simple purification by the gel-filtration gives a novel route for constructing combinatorial peptide libraries in the solution phase.
- Tamiaki, Hitoshi,Obata, Tomoyuki,Azefu, Yasuo,Toma, Kazunori
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p. 733 - 738
(2007/10/03)
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