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Asymmetric organocatalytic SOMO reactions of enol silanes and silyl ketene (thio)acetals

Org. and Biomol. Chem. - 11 November, 2014 - 13:54

Org. Biomol. Chem., 2014, 12,9446-9452
DOI: 10.1039/C4OB01385A, PaperPavol Tisovsky, Maria Meciarova, Radovan Sebesta
The reactivity of aldehydes and ketones in asymmetric organo-SOMO reactions with enol silanes was explored. The best results were obtained with 3-phenylpropanal and tetralone-derived silyl enol ether and silyl ketene thioacetal.
The content of this RSS Feed (c) The Royal Society of Chemistry

Transition metal-free oxidative esterification of benzylic alcohols in aqueous medium

Org. and Biomol. Chem. - 11 November, 2014 - 13:54

Org. Biomol. Chem., 2014, 12,9453-9456
DOI: 10.1039/C4OB01524J, PaperSupravat Samanta, Venkatanarayana Pappula, Milan Dinda, Subbarayappa Adimurthy
Oxidative esterification of benzylic alcohols with catalytic HBr in aqueous medium under mild conditions is reported with a broad substrate scope including selective mono-esterification of ethylene glycol and glycerol.
The content of this RSS Feed (c) The Royal Society of Chemistry

Conformationally locked bicyclo[4.3.0]nonane carbanucleosides: synthesis and bio-evaluation

Org. and Biomol. Chem. - 11 November, 2014 - 13:54

Org. Biomol. Chem., 2014, 12,9439-9445
DOI: 10.1039/C4OB01763C, PaperTony K. M. Shing, Anthony W. H. Wong, Huiyan Li, Z. F. Liu, Paul K. S. Chan
D-Ribose was converted into 3 novel carbobicyclic nucleosides bearing a bicyclo[4.3.0]nonane framework in 16-19 steps with 5-12% overall yields involving a Wittig olefination and an intramolecular Diels-Alder reaction as the key steps.
The content of this RSS Feed (c) The Royal Society of Chemistry

Revisiting the sparteine surrogate: development of a resolution route to the (-)-sparteine surrogate

Org. and Biomol. Chem. - 11 November, 2014 - 13:54

Org. Biomol. Chem., 2014, 12,9357-9365
DOI: 10.1039/C4OB01694G, PaperJames D. Firth, Peter O'Brien, Leigh Ferris
A multi-gram scale, chromatography-free synthesis of the racemic sparteine surrogate and its resolution via diastereomeric salt formation with (-)-O,O[prime or minute]-di-p-toluoyl-L-tartaric acid is reported. This work solves a key limitation: either enantiomer of the sparteine surrogate can now be readily accessed.
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Rapid assembly of heterocycle grafted macrocycles via tandem one-pot double 1,3-dipolar cycloaddition reaction

Org. and Biomol. Chem. - 11 November, 2014 - 13:54

Org. Biomol. Chem., 2014, 12,9375-9383
DOI: 10.1039/C4OB01778A, PaperR. Prasanna, S. Purushothaman, R. Raghunathan
Synthesis of triazole linked macrocycles grafted with glycospiroheterocycle was accomplished by stereo- and regioselective tandem double 1,3-dipolar cycloaddition (1,3-DC) reaction.
The content of this RSS Feed (c) The Royal Society of Chemistry

Carbohydrates as a reagent in multicomponent reactions: one-pot access to a new library of hydrophilic substituted pyrimidine-fused heterocycles

Org. and Biomol. Chem. - 11 November, 2014 - 13:54

Org. Biomol. Chem., 2014, 12,9419-9426
DOI: 10.1039/C4OB01791A, PaperMaryam Nourisefat, Farhad Panahi, Ali Khalafi-Nezhad
A new multicomponent reaction containing carbohydrates is developed for one-pot synthesis of a new class of hydrophilic substituted pyrimidine-fused heterocycles.
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Trienamines derived from 5-substituted furfurals: remote [varepsilon]-functionalization of 2,4-dienals

Org. and Biomol. Chem. - 11 November, 2014 - 13:54

Org. Biomol. Chem., 2014, 12,9324-9328
DOI: 10.1039/C4OB01759E, CommunicationJaime A. S. Coelho, Alexandre F. Trindade, Vania Andre, M. Teresa Duarte, Luis F. Veiros, Carlos A. M. Afonso
The remote selective [varepsilon]-functionalization of 5-substituted furfurals by trienamine catalysis is described, resulting in a new scaffold.
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Antibacterial epipolythiodioxopiperazine and unprecedented sesquiterpene from Pseudallescheria boydii, a beetle (coleoptera)-associated fungus

Org. and Biomol. Chem. - 11 November, 2014 - 13:54

Org. Biomol. Chem., 2014, 12,9405-9412
DOI: 10.1039/C4OB01494D, PaperQi Wu, Nan Jiang, Wen Bo Han, Ya Ning Mei, Hui Ming Ge, Zhi Kai Guo, Ng Seik Weng, Ren Xiang Tan
Pseudallescheria boydii produces four new epipolythiodioxopiperazine (ETP) boydines A-D and two novel sesquiterpene boydenes A and B.
The content of this RSS Feed (c) The Royal Society of Chemistry

Water-soluble NHC-Cu catalysts: applications in click chemistry, bioconjugation and mechanistic analysis

Org. and Biomol. Chem. - 11 November, 2014 - 13:54

Org. Biomol. Chem., 2014, 12,9350-9356
DOI: 10.1039/C4OB01350F, PaperHeriberto Diaz Velazquez, Yara Ruiz Garcia, Matthias Vandichel, Annemieke Madder, Francis Verpoort
A series of novel bis(NHC) Cu(I) catalysts enables the production of triazoles with different substitution patterns and bioconjugation via "click" chemistry under homogeneous and/or heterogeneous catalytic conditions in aqueous media.
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Atomic Scale Mechanisms of Friction Reduction and Wear Protection by Graphene

Nanoletters - 11 November, 2014 - 13:46

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Nano LettersDOI: 10.1021/nl5037403

Degenerate Nucleophilic Substitution in Phosphonium Salts

J. Am. Chem. Soc. - 11 November, 2014 - 13:28

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Journal of the American Chemical SocietyDOI: 10.1021/ja507433g

Lanthanum Lead Oxide Hydroxide Nitrates with a Nonlinear Optical Effect

Inorganic Chemistry - 11 November, 2014 - 13:16

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Inorganic ChemistryDOI: 10.1021/ic502202a

Model for the Phase Transfer of Nanoparticles Using Ionic Surfactants

Langmuir - 11 November, 2014 - 12:54

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LangmuirDOI: 10.1021/la503574s

Lead(II) Binding to the Chelating Agent d-Penicillamine in Aqueous Solution

Inorganic Chemistry - 11 November, 2014 - 12:42

TOC Graphic

Inorganic ChemistryDOI: 10.1021/ic5018714

Fluorescent probes and bioimaging: alkali metals, alkaline earth metals and pH

Chem. Soc. Rev. - 11 November, 2014 - 12:17

Chem. Soc. Rev., 2015, Advance Article
DOI: 10.1039/C4CS00275J, Review ArticleJun Yin, Ying Hu, Juyoung Yoon
This review highlights the recent advances that have been made in the design and bioimaging applications of fluorescent probes for alkali metals, alkaline earth metal cations and for pH determination within biological systems.
To cite this article before page numbers are assigned, use the DOI form of citation above.
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