Diquats with Robust Chirality: Facile Resolution, Synthesis of Chiral Dyes, and Application as Selectors in Chiral Analysis
作者:Harish R. Talele、Dušan Koval、Lukáš Severa、Paul E. Reyes-Gutiérrez、Ivana Císařová、Petra Sázelová、David Šaman、Lucie Bednárová、Václav Kašička、Filip Teplý
DOI:10.1002/chem.201800369
日期:2018.5.28
is due to a combination of two structural features: the rigid o‐xylylene tether connecting the nitrogen atoms and the presence of two substituents in the bay region of the bipyridinium scaffold. The straightforward synthesis of diquats, plus facile resolution and derivatization make them attractive for chiral application studies. This is demonstrated by: 1) synthesis of the first non‐racemic diquat
Absolute Configuration of 3,3′-Diphenyl-[2,2′-binaphthalene]-1,1′-diol Revisited
作者:Prasad L. Polavarapu、Ana G. Petrovic、Sarah E. Vick、William D. Wulff、Hong Ren、Zhensheng Ding、Richard J. Staples
DOI:10.1021/jo901013z
日期:2009.8.7
The experimental vibrational circulardichroism, electronic circulardichroism, and optical rotatorydispersion spectra and corresponding quantum chemical predictions of 3,3′-diphenyl-[2,2′-binaphthalene]-1,1′-diol (VANOL) are used to confirm its absolute configuration as (+)589-(aR) or (−)589-(aS). A discrepancy in the literature crystal structure has been resolved by determining the X-ray crystal