10549-22-1Relevant articles and documents
1H NMR and 13C NMR spectroscopy of pyrene dianions
Rodenburg, L.,Floor, M.,Lefeber, A.,Cornelisse, J.,Lugtenburg, J.
, p. 1 - 8 (1988)
A simple technique for the preparation of anions of polycyclic aromatic hydrocarbons is described. 1H and 13C NMR spectra of dianions of pyrene and derivatives of pyrene are reported and discussed.The electron density is greatest at the carbon atoms in the perimeter of the dianions.The presence of an electron-donating substitutent at position 2 causes an increase in the charge at positions 1 and 3.
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Allinger,N.L. et al.
, p. 1974 - 1978 (1961)
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Metacyclophanes and Related Compounds. 21. Nitration of Metacyclophanes
Tashiro, Masashi,Mataka, Shuntaro,Takezaki, Yoshinori,Takeshita, Michinori,Arimura, Takashi,et al.
, p. 451 - 458 (1989)
Various metacyclophanes were prepared from the corresponding benzene derivatives by using the tert-butyl group as a positional protective function and their nitrations were carried out under various conditions.It was found that nitration of 8,16-dime
Structural, Mechanistic, Spectroscopic, and Preparative Studies on the Lewis Base Catalyzed, Enantioselective Sulfenofunctionalization of Alkenes
Hartmann, Eduard,Denmark, Scott E.
, (2017/09/19)
The full details of mechanistic investigation on enantioselective sulfenofunctionalization of alkenes under Lewis base catalysis are described. Solution spectroscopic identification of the catalytically active sulfenylating agent has been accomplished along with the spectroscopic identification of putative thiiranium ion intermediates generated in the enantiodetermining step. The structural insights gleaned from these studies informed the design of new catalyst architectures to improve enantioselectivity. In addition, structural modification of the sulfenylating agents had a significant and salutary effect on the enantioselectivity of sulfenofunctionalization which was demonstrated to be general for trans disubstituted alkenes. Whereas electronic modulation had little effect on the rate and selectivity, steric bulk on arylsulfenylphthalimides was very beneficial.
Synthesis of Nitropolycyclic Aromatic Hydrocarbons with the Substituent at the Longest Axis
Miller, Dwight W.,Herreno-Saenz, Diogenes,Huang, Kurt H.,Heinze, Thomas M.,Fu, Peter P.
, p. 3746 - 3748 (2007/10/02)
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