✦ LIBER ✦
Sur une methode rapide de determination de la purete diastereoisomerique des adduits cyclopentadiene-esters alleniques chiraux
✍ Scribed by M. Bertrand; J.P. Zahra
- Publisher
- Elsevier Science
- Year
- 1989
- Tongue
- French
- Weight
- 211 KB
- Volume
- 30
- Category
- Article
- ISSN
- 0040-4039
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✦ Synopsis
We propose a method based on NMR siqnal inteqration for the determination of the diastereoisomeric excess of the thermal (4 + 2) adducts of chiral allenic esters with cyclopentadiene. La reaction de Diels-Alder joue WI r81e important en synthese orqanique et le probl&ma du wntrble de sa st&&s&ectivit& fait l'objet de travaux intensifs (1, 2).