244231-01-4Relevant academic research and scientific papers
A Class of C2 and Pseudo C2 Symmetric Ketone Catalysts for Asymmetric Epoxidation. Conformational Effect on Catalysis
Wang, Zhi-Xian,Miller, Susie M.,Anderson, Oren P.,Shi, Yian
, p. 6443 - 6458 (2007/10/03)
A class of C2 and pseudo C2 symmetric ketones with one fused ring at each side of the carbonyl group have been prepared from quinic acid and found to be effective catalysts for the asymmetric epoxidation of a variety of olefins. Electron deficient olefins such as enones can be efficiently epoxidized. Encouragingly good enantioselectivity is also obtained for the epoxidation of styrenes. The studies show that the ketone conformation plays an important role in the reactivity and selectivity of the catalyst.
The stereocontrolled formation of cyclic vicinal cis-diols via a samarium diiodide pinacol coupling of dialdehydes
Chiara, Jose Luis,Cabri, Walter,Hanessian, Stephen
, p. 1125 - 1128 (2007/10/02)
Aliphatic 1,5- and 1,6 dialdehydes with and without α-substituents, as well as derivatives of carbohydrate dialdehydes undergo a pinacol coupling reaction in the presence of SmI2 to give cis-diols as the preponderant products. When α-alkoxy groups are present, the diol has an orientation that is opposite to such groups.
