Catalytic asymmetric synthesis of trans-configured beta-lactones: cooperation of Lewis acid and ion pair catalysis.
Chemistry
; 16(30): 9132-9, 2010 Aug 09.
Article
en En
| MEDLINE
| ID: mdl-20602368
ABSTRACT
The development of the first trans-selective catalytic asymmetric [2+2] cyclocondensation of acyl halides with aliphatic aldehydes furnishing 3,4-disubstituted beta-lactones is described. This work made use of a new strategy within the context of asymmetric dual activation catalysis it combines the concepts of Lewis acid and organic aprotic ion pair catalysis in a single catalyst system. The methodology could also be applied to aromatic aldehydes and offers broad applicability (29 examples). The utility was further demonstrated by nucleophilic ring-opening reactions that provide highly enantiomerically enriched anti-aldol products.
Texto completo:
1
Colección:
01-internacional
Base de datos:
MEDLINE
Asunto principal:
Aldehídos
/
Lactonas
Idioma:
En
Revista:
Chemistry
Asunto de la revista:
QUIMICA
Año:
2010
Tipo del documento:
Article
País de afiliación:
Suiza