N,N'-Disubstituted Naphthyl(Azo)-2,3-Dihydroperimidine Blue Dyes Exhibiting High Solubility in Ferroelectric Liquid Crystal Hosts
The synthesis of N,N'-disubstituted naphthyl(azo)-2,3-dihydroperimidine blue dyes and a comparison of their absorption maxima and solubility in ferroelectric liguid crystal (FLC) hosts is described.The N,N'-disubstituted azo perimidines exhibited a much h
O'Brien, M. K.,Shannon, P. J.,Grasso, R. P.
p. 167 - 175
(2007/10/02)
Cyclometalation of Arylazo Compounds. Part 2. Regioselectivity of the Cyclopalladation of Some Substituted 1-Arylazonaphthalenes
A variety of cyclopalladated 1-arylazonaphthalenes is described, where ortho-palladation occurs at C(2) in the naphthyl ring or at C(2' or 6') in the phenyl moiety.Two examples of peri-cyclopalladation at C(8) in the naphthyl ring are presented.The electronic and steric influences of substituents at either arene moiety on the relative basicities of the azo-N-atoms and the relative nucleophilicities of the potential palladation sites C(2), C(2' or 6'), and C(8) are discussed qualitatively in order to rationalize the observed regioselectivity.
Hugentobler, Max,Klaus, Alfred J.,Mettler, Hanspeter,Rys, Paul,Wehrle, Gabi
p. 1202 - 1211
(2007/10/02)
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