Synthesis, structure, and aromaticity of a hoop-shaped cyclic benzenoid cyclophenacene.
- E. Nakamura, Kazukuni Tahara, Y. Matsuo, M. Sawamura
- ChemistryJournal of the American Chemical Society
- 12 February 2003
The first hoop-shaped cyclic benzenoid compounds, which contain 40 pi electrons, have been synthesized in three or four steps fromfullerene by rationally designed chemical modification and were proven to be aromatic.
Functionalized Fullerene as an Artificial Vector for Transfection.
- E. Nakamura, H. Isobe, Naoki Tomita, M. Sawamura, S. Jinno, H. Okayama
- ChemistryAngewandte Chemie
- 1 December 2000
Vector DNA was purified by the CsCl equilibrium density gradient centrifugation and phenol extractions in the presence of 1% sodium dodecyl sulfate (SDS) and final concentration of plasmid was determined by absorbance at 260 nm.
Catalytic asymmetric aldol reaction: reaction of aldehydes with isocyanoacetate catalyzed by a chiral ferrocenylphosphine-gold(I) complex
Spherical bilayer vesicles of fullerene-based surfactants in water: a laser light scattering study.
A laser light scattering study of the association behavior of the potassium salt of pentaphenyl fullerene in water revealed that the hydrocarbon anions Ph5C60- associate into bilayers, forming stable spherical vesicles with an average hydrodynamic radius and a radius of gyration of about 17 nanometers at a very low critical aggregation concentration.
Regio- and stereocontrolled introduction of secondary alkyl groups to electron-deficient arenes through copper-catalyzed allylic alkylation.
In the title reaction allylic substrates with a carbonate or acetate leaving group instead of the phosphate group are not reactive.
Tripod immobilization of triphenylphosphane on a silica-gel surface to enable selective mono-ligation to palladium: application to Suzuki-Miyaura cross-coupling reactions with chloroarenes.
A tripodal immobilization constrains the mobility of the phosphane molecule and causes the lone pair on the phosphorus atom to face in the direction perpendicular to the support, resulting in the selective formation of a 1:1 metal-phosphane species that is free from unfavorable steric repulsions caused by the silica surface.
Cu(I)-catalyzed intramolecular hydroamination of unactivated alkenes bearing a primary or secondary amino group in alcoholic solvents.
The Cu-Xantphos system catalyzes the intramolecular hydroamination of unactivated terminal alkenes bearing an unprotected aminoalkyl substituent in alcoholic solvents, giving pyrrolidine and piperidine derivatives in excellent yields.
Conductance of a single molecule anchored by an isocyanide substituent to gold electrodes
The effect of anchoring group on the electrical conductance of a single molecule bridging two Au electrodes was studied using disubstituted [isocyanide (CN–), thiol (S–), or cyanide (NC–)] benzene.…
Conductance of Single 1,4-Benzenediamine Molecule Bridging between Au and Pt Electrodes
- M. Kiguchi, S. Miura, Takuya Takahashi, K. Hara, M. Sawamura, K. Murakoshi
- Chemistry, Physics
- 13 August 2008
We investigated the single 1,4-benzenediamine molecule bridging between Au or Pt electrodes. The conductances of the molecular junctions with the Au−NH2 and Pt−NH2 bonds (Au−NH2 and Pt−NH2 molecular…
Copper(I)-catalyzed intramolecular hydroalkoxylation of unactivated alkenes.
A Cu(I)-Xantphos system catalyzed the intramolecular hydroalkoxylation of unactivated terminal alkenes, giving five- and six-membered ring ethers. This system is applicable to both primary and…