R)-2 peut aussi &tre obtenu par dCpolymCrisation d'un poly-(R)-hydroxy-3-butanoate d'alkyle [4].
Synthèse énantiospécifique de la (+)-(R)-éthyl-6-dihydro-2,3-méthyl-2-4H-pyranone-4, phéromone de la mite Hepialus hecta L
✍ Scribed by Pierre-François Deschenaux; Thomas Kallimopoulos; André Jacot-Guillarmod
- Publisher
- John Wiley and Sons
- Year
- 1989
- Tongue
- German
- Weight
- 194 KB
- Volume
- 72
- Category
- Article
- ISSN
- 0018-019X
No coin nor oath required. For personal study only.
✦ Synopsis
Enantiospecific Synthesis of (+)-(R)-6-Ethyl-2,3-dihydro-2-methyl-4H-pyran-4-one, Sex-Pheromonal Component of the Male Swift Moth Hepialus heeta L. A new synthesis of (+)-(R)-6-ethyl-2,3-dihydro-2-methyl-4H-pyran-4-one ((R)-8), sex-pheromonal component of the male swift moth Hepialus hecta L., has been performed from (-)-(R)-l-(1,3-dithian-2-yl)propan-2-ol with an enantiomeric excess of > 97 %. ') *)
L'utilisation de l'acide dinitro-3,5-benzoi'que conduit i un solide que I'on peut purifier par recristallisation.
L'ee est de I'ordre de 99 % .
Les deux diastereoisomires peuvent h e stpares par chromatographie.
📜 SIMILAR VOLUMES
## Abstract 4,4‐Dimethyl‐dihydro‐2,3‐furanedione (**4**), an intermediate in the synthesis of (+)‐D‐pantothenic acid, is obtained in good yield from readily available substances such as isopropyl chloride, diethyl oxalate and formaldehyde, without oxidative conditions.