Evaluation of a chiral stationary phase derived from a simple Diels-Alder reaction
โ Scribed by Linda Thunberg; Stig Allenmark
- Publisher
- John Wiley and Sons
- Year
- 2003
- Tongue
- English
- Weight
- 129 KB
- Volume
- 15
- Category
- Article
- ISSN
- 0899-0042
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๐ SIMILAR VOLUMES
The reaction between the chiral allenic acid (+)-(S)-1 and the carbodiimides 2 a 4 and the keten-imine 6 gives, under mild conditions, the tricyclic compounds >5,7, and 8. Low diastereoselectivity and a partial loss of optical activity are observed. A stepwise mechanistic pathway oiu a biradical int
## Abstract __N__โAcylpyrazoles (**1**) were promising as good dienophiles, which were easily converted into the desired carboxylic derivatives. Bis(pyrazolyl)methanes, which were derived from chiral pyrazoles, showed the activity of chiral catalyst. Particularly 10 mol% of bis(isomenthopyrazolโ1,1