Royal Society of Chemistry

An intermolecular C-H functionalization method for the synthesis of 3-hydroxy-2-oxindoles

Org. and Biomol. Chem. - 30 September, 2014 - 04:17

Org. Biomol. Chem., 2014, Advance Article
DOI: 10.1039/C4OB01643B, CommunicationJinsen Chen, Chao Song, Pei Chen, Jin Zhu
An intermolecular C-H functionalization with a denitrosation-triggered cyclization method is developed for the synthesis of 3-hydroxy-2-oxindoles.
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Aerobic oxysulfonylation of alkenes using thiophenols: an efficient one-pot route to [small beta]-ketosulfones

Org. and Biomol. Chem. - 30 September, 2014 - 04:17

Org. Biomol. Chem., 2014, Advance Article
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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Regioselective [small pi]-extension of indoles with rhodium enalcarbenoids - synthesis of substituted carbazoles

Org. and Biomol. Chem. - 30 September, 2014 - 04:17

Org. Biomol. Chem., 2014, Advance Article
DOI: 10.1039/C4OB01693A, PaperKuldeep Singh Rathore, Mandeep Harode, Sreenivas Katukojvala
An efficient Rh(II) carboxylate and Bronsted acid catalyzed direct [small pi]-extension of indoles to 4-substituted carbazoles is developed.
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Synthesis of 3-benzylisoquinolines by domino imination/cycloisomerisation of 2-propargylbenzaldehydes

Org. and Biomol. Chem. - 30 September, 2014 - 04:17

Org. Biomol. Chem., 2014, 12,8019-8030
DOI: 10.1039/C4OB01583E, PaperOpen Access Open Access Creative Commons Licence&nbsp This article is licensed under a Creative Commons Attribution-NonCommercial 3.0 Unported Licence.Monica Dell'Acqua, Valentina Pirovano, Giorgio Confalonieri, Antonio Arcadi, Elisabetta Rossi, Giorgio Abbiati
A modular entry to 2-propargylbenzaldehydes and their use in [small mu ]W-promoted cascade reaction with ammonium acetate for the synthesis of 3-benzylisoquinolines.
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Synthesis of substituted azafluorenones from dihalogeno diaryl ketones by palladium-catalyzed auto-tandem processes

Org. and Biomol. Chem. - 30 September, 2014 - 04:17

Org. Biomol. Chem., 2014, Advance Article
DOI: 10.1039/C4OB01629G, CommunicationNada Marquise, Vincent Dorcet, Floris Chevallier, Florence Mongin
Auto-tandem processes combining either Suzuki or Heck coupling with direct cyclizing arylation are described.
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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. - 30 September, 2014 - 04:17

Org. Biomol. Chem., 2014, Advance Article
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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Asymmetric synthesis of (3S,1[prime or minute]S)-3-(1-amino-2,2,2-trifluoroethyl)-1-(alkyl)-indolin-2-one derivatives by addition of (S)-N-t-butylsulfinyl-3,3,3-trifluoroacetaldimine to 1-(alkyl)-indolin-2-ones

Org. and Biomol. Chem. - 30 September, 2014 - 04:17

Org. Biomol. Chem., 2014, 12,7909-7913
DOI: 10.1039/C4OB01453G, CommunicationPing Qian, Chen Xie, Lingmin Wu, Haibo Mei, Vadim A. Soloshonok, Jianlin Han, Yi Pan
This paper for the first time presents the addition reactions between amide-derived nucleophiles and CF3-containing N-sulfinyl-imines, with synthetically useful diastereoselectivity and chemical yields.
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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. - 30 September, 2014 - 04:17

Org. Biomol. Chem., 2014, Advance Article
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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Anion effects to deliver enhanced iridium catalysts for hydrogen isotope exchange processes

Org. and Biomol. Chem. - 30 September, 2014 - 04:17

Org. Biomol. Chem., 2014, 12,7927-7931
DOI: 10.1039/C4OB01570C, CommunicationAlan R. Kennedy, William J. Kerr, Rory Moir, Marc Reid
Enhanced catalyst efficiency and solvent applicability has been achieved for hydrogen isotope exchange processes with Ir(I) complexes possessing larger, more weakly coordinating counterions.
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A general Pd/Cu-catalyzed C-H heteroarylation of 3-bromoquinolin-2(1H)-ones

Org. and Biomol. Chem. - 30 September, 2014 - 04:17

Org. Biomol. Chem., 2014, Advance Article
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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Short and efficient synthesis of fluorinated [small delta]-lactams

Org. and Biomol. Chem. - 30 September, 2014 - 04:17

Org. Biomol. Chem., 2014, Advance Article
DOI: 10.1039/C4OB01547A, PaperThomas J. Cogswell, Craig S. Donald, De-Liang Long, Rodolfo Marquez
The diastereoselective synthesis of fluorinated [small delta]-lactams.
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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. - 30 September, 2014 - 04:17

Org. Biomol. Chem., 2014, Advance Article
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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Synthesis and photophysical properties of pyrene-based green fluorescent dyes: butterfly-shaped architectures

Org. and Biomol. Chem. - 30 September, 2014 - 04:17

Org. Biomol. Chem., 2014, 12,7914-7918
DOI: 10.1039/C4OB01509F, CommunicationDevendar Goud Vanga, Mithun Santra, Ashok Keerthi, Suresh Valiyaveettil
A few pyrene-based fluorescent compounds were synthesized using Pd/Cu-catalyzed cross-coupling reaction.
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Synthesis of phenanthridine derivatives via cascade annulation of diaryliodonium salts and nitriles

Org. and Biomol. Chem. - 30 September, 2014 - 04:17

Org. Biomol. Chem., 2014, 12,7904-7908
DOI: 10.1039/C4OB01504E, CommunicationJian Li, Hongni Wang, Jiangtao Sun, Yang Yang, Li Liu
A cascade coupling reaction of diaryliodonium salts and nitriles via copper-catalysis toward phenanthridine derivatives has been developed.
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Estimating the shape and size of supramolecular assemblies by variable temperature diffusion ordered spectroscopy

Org. and Biomol. Chem. - 30 September, 2014 - 04:17

Org. Biomol. Chem., 2014, 12,7932-7936
DOI: 10.1039/C4OB01373E, CommunicationBenjamin M. Schulze, Davita L. Watkins, Jing Zhang, Ion Ghiviriga, Ronald K. Castellano
Reported is characterization of the self-assembly of [small pi]-conjugated oligomers, molecules studied recently in photovoltaic devices, using variable temperature diffusion ordered spectroscopy; the approach has allowed estimation of assembly size, shape, and molecularity.
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Oxyma-B, an excellent racemization suppressor for peptide synthesis

Org. and Biomol. Chem. - 30 September, 2014 - 04:17

Org. Biomol. Chem., 2014, Advance Article
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. - 30 September, 2014 - 04:17

Org. Biomol. Chem., 2014, Advance Article
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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Catalytic asymmetric synthesis of the pentacyclic core of (-)-nakadomarin A via oxazolidine as an iminium cation equivalent

Org. and Biomol. Chem. - 30 September, 2014 - 04:17

Org. Biomol. Chem., 2014, 12,7919-7922
DOI: 10.1039/C4OB01678E, CommunicationNobuya Tsuji, Michael Stadler, Naoya Kazumi, Tsubasa Inokuma, Yusuke Kobayashi, Yoshiji Takemoto
A catalytic asymmetric synthesis of the pentacyclic core of (-)-nakadomarin A was achieved.
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Stereocontrolled lithiation/trapping of chiral 2-alkylideneaziridines: investigation into the role of the aziridine nitrogen stereodynamics

Org. and Biomol. Chem. - 30 September, 2014 - 04:17

Org. Biomol. Chem., 2014, Advance Article
DOI: 10.1039/C4OB01457J, PaperRosmara Mansueto, Leonardo Degennaro, Jean-Francois Briere, Karen Griffin, Michael Shipman, Saverio Florio, Renzo Luisi
The origin of the stereoselectivity in the lithiation/trapping of 2-alkylideneaziridines bearing a chiral group as the nitrogen substituent was investigated.
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Synthesis of meta and para-substituted aromatic sulfonate derivatives of polydentate phenylazaphosphinate ligands: enhancement of the water solubility of emissive europium(III) EuroTracker[registered sign] dyes

Org. and Biomol. Chem. - 30 September, 2014 - 04:17

Org. Biomol. Chem., 2014, 12,8061-8071
DOI: 10.1039/C4OB01143K, PaperMartina Delbianco, Laurent Lamarque, David Parker
The use of a trifluoroethyl ester group to protect sulfonic acid moieties is used in the synthesis of a short series of water-soluble, very bright europium(III) complexes.
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