Charge-Transfer Probes for Molecular Recognition <i>via</i> Steric Hindrance in Donor-Acceptor Pairs
作者:R. Rathore、S. V. Lindeman、J. K. Kochi
DOI:10.1021/ja9720319
日期:1997.10.1
respectively, of different [D,A] complexes. Importantly, such measurements establish charge-transfer absorption to be a sensitive analytical tool for evaluating the steric inhibition of donor−acceptor association. For example, the steric differences among various hindered aromatic donors in their association with quinone are readily dramatized in their distinctive charge-transfer (color) absorptions and verified
tetrahydroisoquinoline derivatives in good to high yields. This procedure was also used for the selective preparation of benzene derivativesfrom three different alkynes. The use of trimethylsilyl-substituted alkyne as the first, second or third alkyne afforded desilylated benzene derivatives. The reaction of zirconacyclopentadienes with allenes gave benzene derivatives as a mixture of two isomers.
Dielectric Evidence of Molecular Rotation in the Crystals of Certain Benzene Derivatives<sup>*</sup>
作者:Addison H. White、B. S. Biggs、S. O. Morgan
DOI:10.1021/ja01858a005
日期:1940.1
Unequivocal proof of slowed chromium tricarbonyl rotation in a sterically crowded arene complex: an x-ray crystallographic and variable-temperature high-field NMR study of (C6Et5COCH3)Cr(CO)3
作者:Patricia A. Downton、Bavani Mailvaganam、Christopher S. Frampton、Brian G. Sayer、Michael J. McGlinchey
DOI:10.1021/ja00157a007
日期:1990.1
SUZUKI HITOMI; OHNISHI KAZUMASA, NIXON KAGAKU KAJSI, NIRRON KAGAKU KAISNI, J. CHEM. SOS. JARAN, CHEM. AND +