Royal Society of Chemistry

Aerobic oxysulfonylation of alkenes using thiophenols: an efficient one-pot route to [small beta]-ketosulfones

Org. and Biomol. Chem. - 16 October, 2014 - 07:17

Org. Biomol. Chem., 2014, 12,8550-8554
DOI: 10.1039/C4OB00776J, PaperAtul K. Singh, Ruchi Chawla, Twinkle Keshari, Vinod K. Yadav, Lal Dhar S. Yadav
A direct and efficient one-pot synthetic route to [small beta]-ketosulfones via aerobic oxysulfonylation of alkenes using thiophenols at an ambient temperature is reported.
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Insights into the programmed ketoreduction of partially reducing polyketide synthases: stereo- and substrate-specificity of the ketoreductase domain

Org. and Biomol. Chem. - 16 October, 2014 - 07:17

Org. Biomol. Chem., 2014, 12,8542-8549
DOI: 10.1039/C4OB01777C, PaperIshin Soehano, Lifeng Yang, Feiqing Ding, Huihua Sun, Zhen Jie Low, Xuewei Liu, Zhao-Xun Liang
Evidence are provided to support that partially reducing polyketide synthases achieve programmed ketoreduction by differential recognition of polyketide intermediates.
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Multi-channel colorimetric and fluorescent probes for differentiating between cysteine and glutathione/homocysteine

Org. and Biomol. Chem. - 16 October, 2014 - 07:17

Org. Biomol. Chem., 2014, 12,8422-8427
DOI: 10.1039/C4OB01219D, PaperLun Song, Ti Jia, Wenjia Lu, Nengqin Jia, Weibing Zhang, Junhong Qian
Three fluorescent probes were rationally designed to discriminate between Cys and GSH/Hcy. Cys and GSH can be differentiated by the naked eye.
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Two-channel dansyl/tryptophan emitters with a cholic acid bridge as reporters for local hydrophobicity within supramolecular systems based on bile salts

Org. and Biomol. Chem. - 16 October, 2014 - 07:17

Org. Biomol. Chem., 2014, 12,8499-8504
DOI: 10.1039/C4OB01394H, PaperM. Gomez-Mendoza, M. Luisa Marin, Miguel A. Miranda
Simultaneous emission from the Trp and Dns fluorophores of linked dyads in biomimetic media is quenched by iodide anions with rate constants that depend on the local hydrophobicity.
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ent-Kaurane-based regio- and stereoselective inverse electron demand hetero-Diels-Alder reactions: synthesis of dihydropyran-fused diterpenoids

Org. and Biomol. Chem. - 16 October, 2014 - 07:17

Org. Biomol. Chem., 2014, 12,8442-8452
DOI: 10.1039/C4OB01040J, PaperChunyong Ding, Lili Wang, Haijun Chen, Christopher Wild, Na Ye, Ye Ding, Tianzhi Wang, Mark A. White, Qiang Shen, Jia Zhou
A mild and concise approach for the construction of a 3,4-dihydro-2H-pyran ring integrated into the A-ring of the natural product oridonin is reported herein.
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A general Pd/Cu-catalyzed C-H heteroarylation of 3-bromoquinolin-2(1H)-ones

Org. and Biomol. Chem. - 16 October, 2014 - 07:17

Org. Biomol. Chem., 2014, 12,8533-8541
DOI: 10.1039/C4OB01610F, PaperAlexandre Bruneau, Jean-Daniel Brion, Samir Messaoudi, Mouad Alami
The Pd(OAc)2/CuI system effectively catalyzes the coupling of 3-bromoquinolin-2(1H)-ones with a series of azoles to give 3-(heteroaryl)quinolin-2(1H)-ones in good yields.
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The mechanism and regioselectivity of gold(I) or platinum(II) catalyzed intramolecular hydroarylation to pyrrolopyridinones and pyrroloazepinones

Org. and Biomol. Chem. - 16 October, 2014 - 07:17

Org. Biomol. Chem., 2014, 12,8433-8441
DOI: 10.1039/C4OB00894D, PaperRan Fang, Xiaoxiao Wei, Lizi Yang
Pyrrolopyridinones and pyrroloazepinones can be prepared through gold(I) or platinum(II) catalysis. These interesting gold(I) or platinum(II) catalyses are fully supported by a computational study justifying the formation of each intermediate.
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Direct synthesis of polysubstituted 2-aminothiophenes by Cu(II)-catalyzed addition/oxidative cyclization of alkynoates with thioamides

Org. and Biomol. Chem. - 16 October, 2014 - 07:17

Org. Biomol. Chem., 2014, 12,8473-8479
DOI: 10.1039/C4OB01534G, PaperLi-Shi Ge, Zheng-Lin Wang, Xing-Lan An, Xiaoyan Luo, Wei-Ping Deng
Cu(II)-catalyzed addition/oxidative cyclization of thioamides with alkynoates affords structurally important 2-aminothiophenes in moderate to excellent yields.
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Facile synthesis of antimalarial 1,2-disubstituted 4-quinolones from 1,3-bisaryl-monothio-1,3-diketones

Org. and Biomol. Chem. - 16 October, 2014 - 07:17

Org. Biomol. Chem., 2014, 12,8555-8561
DOI: 10.1039/C4OB01455C, PaperAjjampura C. Vinayaka, Maralinganadoddi P. Sadashiva, Xianzhu Wu, Sergei S. Biryukov, Jose A. Stoute, Kanchugarakoppal S. Rangappa, D. Channe Gowda
A novel strategy is developed to access excellent antimalarial 1,2-disubstituted 4-quinolones in high yield starting from 1,3-bisaryl-monothio-1,3-diketone using Pd(OAc)2 as a catalyst without any ligand requirement.
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Oxyma-B, an excellent racemization suppressor for peptide synthesis

Org. and Biomol. Chem. - 16 October, 2014 - 07:17

Org. Biomol. Chem., 2014, 12,8379-8385
DOI: 10.1039/C4OB01612B, CommunicationYahya E. Jad, Sherine N. Khattab, Beatriz G. de la Torre, Thavendran Govender, Hendrik G. Kruger, Ayman El-Faham, Fernando Albericio
Oxyma-B, a superb additive for the control of optical purity during the synthesis of peptides.
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Direct C-H bond arylation of fluorenes with aryl chlorides catalyzed by N-heterocyclic carbene-palladium(II)-1-methylimidazole complex and further transformation of the products in a one-pot procedure

Org. and Biomol. Chem. - 16 October, 2014 - 07:17

Org. Biomol. Chem., 2014, 12,8488-8498
DOI: 10.1039/C4OB01594K, PaperYa-Yun Ji, Li-Li Lu, Yu-Chun Shi, Li-Xiong Shao
Direct C-H arylation of fluorenes with aryl chlorides and transformation of the products in a one-pot procedure was reported.
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Concise synthesis of 2,4-disubstituted thiazoles from [small beta]-azido disulfides and carboxylic acids or anhydrides: asymmetric synthesis of cystothiazole C

Org. and Biomol. Chem. - 16 October, 2014 - 07:17

Org. Biomol. Chem., 2014, 12,8453-8461
DOI: 10.1039/C4OB01460J, PaperYi Liu, Xue Sun, Xing Zhang, Jun Liu, Yuguo Du
A novel and efficient method for one-pot synthesis of 2,4-disubstituted thiazoles from carboxylic acids or anhydrides is established. Based on this new methodology, the total synthesis of the bis-2,4-disubstituted bis(thiazoles) natural product cystothiazole C is also presented.
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HBTU mediated 1-hydroxybenzotriazole (HOBt) conjugate addition: synthesis and stereochemical analysis of [small beta]-benzotriazole N-oxide substituted [gamma]-amino acids and hybrid peptides

Org. and Biomol. Chem. - 16 October, 2014 - 07:17

Org. Biomol. Chem., 2014, 12,8462-8472
DOI: 10.1039/C4OB01548G, PaperSachitanand M. Mali, Mothukuri Ganesh Kumar, Mona M. Katariya, Hosahudya N. Gopi
Synthesis and conformational analysis of [small beta]-benzotriazole N-oxide ([small beta]-BtO) substituted [gamma]-amino acids by direct conjugate addition of HOBt to E-vinylogous [gamma]-amino acids are reported.
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Phosphorescence within Benzotellurophenes and Color Tunable Tellurophenes under Ambient Conditions

Chem. Commun. - 15 October, 2014 - 12:17
Chem. Commun., 2014, Accepted Manuscript
DOI: 10.1039/C4CC06529H, CommunicationGang He, Benjamin Daniel Wiltshire, Paul Choi, Aliaksandr Savin, Shuai Sun, Arash Mohammadpour, Michael J Ferguson, Robert McDonald, Samira Farsinezhad, Alex Brown, Karthik Shankar, Eric Rivard
The zirconium-mediated syntheses of pinacolboronate (BPin) appended benzo[b]tellurophenes and two phenyl/BPin substituted tellurophene isomers with different colors of emission have been achieved. These species are new additions to an emerging...
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Tungsten Nitride Nanocrystals on Nitrogen-Doped Carbon Black as an Efficient Electrocatalyst for Oxygen Reduction Reaction

Chem. Commun. - 15 October, 2014 - 12:17
Chem. Commun., 2014, Accepted Manuscript
DOI: 10.1039/C4CC07137A, CommunicationYouzhen Dong, Jinghong Li
The direct synthesis of tungsten nitride (WN) nanoparticles on nitrogen-doped carbon black (N-Carbon black) was achieved through facile nucleation and growth of WN nanoparticles on simultaneously generated N-Carbon black under...
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Highlights from Faraday Discussion 168: Astrochemistry of Dust, Ice and Gas, Leiden, The Netherlands, April 2014

Chem. Commun. - 15 October, 2014 - 12:17

Chem. Commun., 2014, 50,13636-13644
DOI: 10.1039/C4CC90397H, Conference ReportJohn D. Thrower, Sergio Ioppolo, Catherine Walsh
Highlights from Faraday Discussion 168: Astrochemistry of Dust, Ice and Gas
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Enantioselective hydroacylation of olefins with rhodium catalysts

Chem. Commun. - 15 October, 2014 - 12:17

Chem. Commun., 2014, 50,13645-13649
DOI: 10.1039/C4CC02276A, ViewpointStephen K. Murphy, Vy M. Dong
Since James and Young's seminal report on the kinetic resolution of 4-pentenals by hydroacylation, enantioselective methods have progressed to include 4-pentenal cyclisations, medium-ring syntheses, and intermolecular variants.
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A convenient sol-gel approach to the preparation of nano-porous silica coatings with very low refractive indices

Chem. Commun. - 15 October, 2014 - 12:17

Chem. Commun., 2014, 50,13813-13816
DOI: 10.1039/C4CC05397D, CommunicationYulu Zhang, Chaoxia Zhao, Pingmei Wang, Longqiang Ye, Jianhui Luo, Bo Jiang
Silica coatings with refractive indices (n) as low as 1.10 were prepared via a simple sol-gel process.
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The influence of the enantiomeric ratio of an organic ligand on the structure and chirality of metal-organic frameworks

Chem. Commun. - 15 October, 2014 - 12:17

Chem. Commun., 2014, 50,13829-13832
DOI: 10.1039/C4CC06190J, CommunicationIvan Burneo, Kyriakos C. Stylianou, Inhar Imaz, Daniel Maspoch
The modification of the enantiomeric ratio of a chiral ligand resulted in the isolation of three distinct MOFs.
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Sizeable red-shift of absorption and fluorescence of subporphyrazine induced by peripheral push and pull substitution

Chem. Commun. - 15 October, 2014 - 12:17

Chem. Commun., 2014, 50,13781-13784
DOI: 10.1039/C4CC05943C, CommunicationXu Liang, Soji Shimizu, Nagao Kobayashi
Peripheral substitution with electron-donating (push) and electron-withdrawing (pull) substituents caused a sizeable red-shift of the Q band absorption and fluorescence of subporphyrazine, and the red-shift was controlled by the push substituents.
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