𝔖 Bobbio Scriptorium
✦   LIBER   ✦

Chiral Recognition Properties in Complexation of Two Asymmetric Hemicarcerands 1

✍ Scribed by Yoon, Juyoung; Cram, Donald J.

Book ID
125506655
Publisher
American Chemical Society
Year
1997
Tongue
English
Weight
409 KB
Volume
119
Category
Article
ISSN
0002-7863

No coin nor oath required. For personal study only.

πŸ“œ SIMILAR VOLUMES

Chiral recognition of epoxides by 1H NMR
Chiral recognition of epoxides by 1H NMR spectroscopy in the presence of a chiral dirhodium complex
✍ Klaudia Wypchlo; Helmut Duddeck πŸ“‚ Article πŸ“… 1997 πŸ› John Wiley and Sons 🌐 English βš– 46 KB πŸ‘ 2 views

It was found that the oxirane ring is a functional group amenable to chiral discrimination by dirhodium-MTPA complexes. Considerable signal shifts up to 0.7 ppm are observed for 1 H nuclei close to the rhodium atoms in the complex. In analogy to previously reported olefins, this method appears to be

Chiral recognition of nitriles by 1H NMR
Chiral recognition of nitriles by 1H NMR spectroscopy in the presence of a chiral dirhodium complex
✍ Shahid Hameed; Roshan Ahmad; Helmut Duddeck πŸ“‚ Article πŸ“… 1998 πŸ› John Wiley and Sons 🌐 English βš– 250 KB πŸ‘ 2 views

The 1H NMR spectra of a variety of chiral racemic nitriles were recorded in in the absence CDCl 3 and presence of dirhodium tetra-(R)-a-methoxy-a-(triΓ‘uoromethyl)phenylacetate MTPA 4 MosherÏs [Rh 2 (MTPA) 4 ; acid]. Moderate 1H signal shifts but clear diastereomeric dispersions due to complexation w