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Optimized methods for preparation of 6(I)-(ω-sulfanyl-alkylene-sulfanyl)-β-cyclodextrin derivatives.

Beilstein journal of organic chemistry

Bednářová E, Hybelbauerová S, Jindřich J.
PMID: 26977195
Beilstein J Org Chem. 2016 Feb 24;12:349-52. doi: 10.3762/bjoc.12.38. eCollection 2016.

A general high-yielding method for the preparation of monosubstituted β-cyclodextrin derivatives which have attached a thiol group in position 6 is described. The thiol group is attached through linkers of different lengths and repeating units (ethylene glycol or methylene)....

Centimeter-Scale 2D van der Waals Vertical Heterostructures Integrated on Deformable Substrates Enabled by Gold Sacrificial Layer-Assisted Growth.

Nano letters

Islam MA, Kim JH, Schropp A, Kalita H, Choudhary N, Weitzman D, Khondaker SI, Oh KH, Roy T, Chung HS, Jung Y.
PMID: 28945439
Nano Lett. 2017 Oct 11;17(10):6157-6165. doi: 10.1021/acs.nanolett.7b02776. Epub 2017 Sep 27.

Two-dimensional (2D) transition metal dichalcogenides (TMDs) such as molybdenum or tungsten disulfides (MoS

Metal-free sp(3) C-H functionalization: a novel approach for the syntheses of selenide ethers and thioesters from methyl arenes.

Chemical communications (Cambridge, England)

Badsara SS, Liu YC, Hsieh PA, Zeng JW, Lu SY, Liu YW, Lee CF.
PMID: 25122526
Chem Commun (Camb). 2014 Oct 07;50(77):11374-7. doi: 10.1039/c4cc04503c.

A DTBP-promoted metal-free and solvent-free formation of C-Se and C-S bonds through sp(3) C-H functionalization of methyl arenes with diselenides and disulfides is described.

Synthesis of 2-Sulfenylindenones via One-Pot Tandem Meyer-Schuster Rearrangement and Radical Cyclization of Arylpropynols with Disulfides.

The Journal of organic chemistry

Zhang XS, Jiao JY, Zhang XH, Hu BL, Zhang XG.
PMID: 27232156
J Org Chem. 2016 Jul 01;81(13):5710-6. doi: 10.1021/acs.joc.6b00762. Epub 2016 Jun 09.

A tandem annulation of arylpropynols with disulfides has been developed for the synthesis of 2-sulfenylindenone derivatives. The reaction pathway involves one-pot tandem Meyer-Schuster rearrangement of arylpropynols and successive radical cyclization with disulfides. Various arylpropynols and disulfides with a number...

Identification of volatile components of bobcat (Lynx rufus) urine.

Journal of chemical ecology

Mattina MJ, Pignatello JJ, Swihart RK.
PMID: 24258737
J Chem Ecol. 1991 Feb;17(2):451-62. doi: 10.1007/BF00994344.

Bobcat (Lynx rufus) urine reduces scent-marking activity of woodchucks (Marmota monax) and feeding activity of snowshoe hares (Lepus americanus) and deer (Odocoileus virginianus, O. hemionus). In order to identify the semiochemicals responsible for these behavior modifications, a dichloromethane extract...

Electron Attachment to Diselenides Revisited: Se-Se Bond Cleavage Is Neither Adiabatic nor the Most Favorable Process.

Journal of chemical theory and computation

Gámez JA, Yáñez M.
PMID: 26596436
J Chem Theory Comput. 2011 Jun 14;7(6):1726-35. doi: 10.1021/ct2002286. Epub 2011 May 24.

Up to now it has been generally assumed that the electron capture on diselenides XSeSeX' produces a fragmentation of the Se-Se bond. However, our high-level ab initio calculations indicate that this is the case only when the substituents X...

Selective Thiolative Lactonization of Internal Alkynes Bearing a Hydroxyl Group with Carbon Monoxide and Organic Disulfides Catalyzed by Transition-Metal Complexes.

The Journal of organic chemistry

Higashimae S, Tamai T, Nomoto A, Ogawa A.
PMID: 26072971
J Org Chem. 2015 Jul 17;80(14):7126-33. doi: 10.1021/acs.joc.5b00977. Epub 2015 Jul 07.

Although many transition-metal catalysts are ineffective for the addition and carbonylative addition of organic disulfides to internal alkynes, dicobalt octacarbonyl and palladium complexes such as Pd(PPh3)4 and Pd(OAc)2 were found to exhibit excellent catalytic activity for the thiolative lactonization...

HOF·CH3CN: probably the best oxygen transfer agent organic chemistry has to offer.

Accounts of chemical research

Rozen S.
PMID: 24871453
Acc Chem Res. 2014 Aug 19;47(8):2378-89. doi: 10.1021/ar500107b. Epub 2014 May 28.

The complex HOF·CH3CN is readily obtained by bubbling dilute fluorine into aqueous acetonitrile solution. It does not have to be purified or isolated, and its solution can react as is, after the concentration has been establish by any iodometric...

Quantifying Changes in the Cellular Thiol-Disulfide Status during Differentiation of B Cells into Antibody-Secreting Plasma Cells.

International journal of cell biology

Hansen RE, Otsu M, Braakman I, Winther JR.
PMID: 24223594
Int J Cell Biol. 2013;2013:898563. doi: 10.1155/2013/898563. Epub 2013 Sep 24.

Plasma cells produce and secrete massive amounts of disulfide-containing antibodies. To accommodate this load on the secretory machinery, the differentiation of resting B cells into antibody-secreting plasma cells is accompanied by a preferential expansion of the secretory compartments of...

Nickel-catalyzed thiolation of unactivated aryl C-H bonds: efficient access to diverse aryl sulfides.

Chemical communications (Cambridge, England)

Yan SY, Liu YJ, Liu B, Liu YH, Shi BF.
PMID: 25661824
Chem Commun (Camb). 2015 Mar 07;51(19):4069-72. doi: 10.1039/c4cc10446c.

A nickel-catalyzed thiolation of unactivated C(sp(2))-H bonds with disulfides employing the PIP directing group was described. This process uses a catalytic nickel catalyst and no metallic oxidants or cocatalysts are required. The reaction tolerates various important functional groups and...

Modified denatured lysozyme effectively solubilizes fullerene c60 nanoparticles in water.

Nanotechnology

Siepi M, Politi J, Dardano P, Amoresano A, De Stefano L, Maria Monti D, Notomista E.
PMID: 28525394
Nanotechnology. 2017 Aug 18;28(33):335601. doi: 10.1088/1361-6528/aa744e. Epub 2017 May 19.

Fullerenes, allotropic forms of carbon, have very interesting pharmacological effects and engineering applications. However, a very low solubility both in organic solvents and water hinders their use. Fullerene C60, the most studied among fullerenes, can be dissolved in water...

Even-odd layer-dependent magnetotransport of high-mobility Q-valley electrons in transition metal disulfides.

Nature communications

Wu Z, Xu S, Lu H, Khamoshi A, Liu GB, Han T, Wu Y, Lin J, Long G, He Y, Cai Y, Yao Y, Zhang F, Wang N.
PMID: 27651106
Nat Commun. 2016 Sep 21;7:12955. doi: 10.1038/ncomms12955.

In few-layer transition metal dichalcogenides (TMDCs), the conduction bands along the ΓK directions shift downward energetically in the presence of interlayer interactions, forming six Q valleys related by threefold rotational symmetry and time reversal symmetry. In even layers, the...

Showing 1 to 12 of 588 entries