5 results match your criteria Chemistry Letters[Journal]

  • Page 1 of 1

Insights into Protein Allostery in the CsoR/RcnR Family of Transcriptional Repressors.

Chem Lett 2014 Jan;43(1):20-25

Department of Chemistry, Indiana University, 212 S. Hawthorne Drive, Bloomington, IN 47405, USA.

CsoR/RcnR transcriptional repressors adopt a disc-shaped, all α-helical dimer of dimers tetrameric architecture, with a four-helix bundle the key structural feature of the dimer. Individual members of this large family of repressors coordinate Cu(I) or Ni(II)/Co(II) or perform cysteine sulfur chemistry in mitigating the effects of metal or metabolite toxicity, respectively. Here we highlight recent insights into the functional diversity of this fascinating family of repressors. Read More

View Article

Download full-text PDF

Source
http://dx.doi.org/10.1246/cl.130965DOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC3970791PMC
January 2014
1 Read

Palladium-Catalyzed Highly Regioselective C-3 Arylation of Imidazo[1,5-]pyridine.

Chem Lett 2011 ;40(9)

Department of Chemistry, University of Illinois at Chicago, 845 W. Taylor St., Chicago, Illinois 60607-7061, USA.

A direct palladium-catalyzed highly regioselective C-3 arylation of imidazo[1,5-]pyridine with aryl bromides has been developed. This reaction is quite general with respect to the aryl or hetaryl bromide. Read More

View Article

Download full-text PDF

Source
http://dx.doi.org/10.1246/cl.2011.1053DOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC3855034PMC
January 2011
8 Reads

Pd(II)-Catalyzed Cross-Coupling of C( )-H Bonds and Alkyl-, Aryl- and Vinyl-Boron Reagents Pd(II)/Pd(0) Catalysis.

Chem Lett 2011 ;40(9):1004-1006

The Scripps Research Institute, 10550 North Torrey Pines Road, La Jolla CA 92037 United States.

Pd(II)-catalyzed cross-coupling of -C-H bonds in benzoic acid and phenylacetic acid amides with alkyl-, aryl- and vinyl-boron reagents have been achieved Pd(II)/Pd(0) catalysis, demonstrating the unprecedented versatility of C-H activation reactions. Read More

View Article

Download full-text PDF

Source
http://dx.doi.org/10.1246/cl.2011.1004DOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC3638876PMC
January 2011
2 Reads

Formation of C-C Bonds via Ruthenium Catalyzed Transfer Hydrogenation: Carbonyl Addition from the Alcohol or Aldehyde Oxidation Level.

Chem Lett 2008 ;37(11):1102-1107

Department of Chemistry and Biochemistry, University of Texas at Austin, Austin, TX 78712-1167, U.S.A.

Under the conditions of ruthenium catalyzed transfer hydrogenation employing isopropanol as terminal reductant, π-unsaturated compounds (1,3-dienes, allenes, 1,3-enynes and alkynes) reductively couple to aldehydes to furnish products of carbonyl addition. In the absence of isopropanol, π-unsaturated compounds couple directly from the alcohol oxidation level to form identical products of carbonyl addition. Such "alcohol-unsaturate C-C couplings" enable carbonyl allylation, propargylation and vinylation from the alcohol oxidation level in the absence of stoichiometric organometallic reagents or metallic reductants. Read More

View Article

Download full-text PDF

Source
http://dx.doi.org/10.1246/cl.2008.1102DOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC3172969PMC
January 2008
8 Reads

Two-Step Synthesis of Furans by Mn(III)-Promoted Annulation of Enol Ethers.

Chem Lett 1987 Jan;16(1):223-226

Department of Chemistry, Harvard University, 12 Oxford Street, Cambridge, MA. 02138, U.S.A.

Enol ethers, β-dicarbonyl compounds and the Mn(III) reagent MnO(OAc) react under mild conditions to form 1-alkoxy-1.2-dihydrofurans in good (70-98%) yields. The latter are readily converted to furans by acid-catalyzed elimination of ROH. Read More

View Article

Download full-text PDF

Source
http://dx.doi.org/10.1246/cl.1987.223DOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC6781872PMC
January 1987
  • Page 1 of 1