Substituent Effects on the NMR Chemical Shifts of Aromatic Side Chain Protons. I. The Effects of<i>meta</i>-Substituents
作者:Hiroaki Yamada、Yuho Tsuno、Yasuhide Yukawa
DOI:10.1246/bcsj.43.1459
日期:1970.5
The Hammett type treatment of the chemicalshift of substituted aromatic side chain protons has not always been successful. The failure might be ascribed to the neglect of magnetic longrange effects. When the corrections were made both for the ring current diminution due to the contribution of polar resonance structure of the introduced substituent and for the substituent magnetic anisotropy effect
The synthesis, characterization, and thermal isomerization of some 1,1,2,2-tetraarylcyclopropanes
作者:Donald R. Arnold、Danial D. M. Wayner、Masato Yoshida
DOI:10.1139/v82-329
日期:1982.9.15
of symmetrically substituted derivatives, the, 13Cmr chemical shifts correlate with ΣσR0. This correlation is only observed in cases where the Cα—Cβ bond has no net polarity. Details of the thermalisomerization of those derivatives for which the possibility of cis and trans configurations exists are also reported. Trends in the Arrhenius parameters provide evidence for the biradical character of the
Synthesis of 2,2-diarylvinyl phenyl selenides by dehydration of 2-hydroxyalkyl phenyl selenides
作者:Nicolai Stuhr-Hansen
DOI:10.1002/hc.21438
日期:2018.7
AbstractA novel route to 2,2‐diarylvinyl phenyl selenides is reported by dehydration of the corresponding 2,2‐diaryl‐2‐hydroxyethyl phenyl selenides, prepared by oxyphenylselenenylations of the corresponding 1,1‐diarylethylenes, upon treatment with p‐toluenesulfonic acid.
62. Attempts to find new chemotherapeutic amidines. Part IX. Derivatives of 1 : 1-diphenylethylene and naphthalene
作者:J. N. Ashley、J. F. Grove、T. Henshall
DOI:10.1039/jr9480000261
日期:——
ARNOLD, D. R.;WAYNER, D. D. M.;YOSHIDA, M., CAN. J. CHEM., 1982, 60, N 18, 2313-2320