Asymmetric Organocatalytic Synthesis of 2,3-Allenamides from Hydrogen-Bond-Stabilized Enynamides.
Org Lett
; 21(7): 2468-2472, 2019 04 05.
Article
em En
| MEDLINE
| ID: mdl-30908066
ABSTRACT
Asymmetric catalytic synthesis of 2,3-allenamides from hydrogen-bond-stabilized enynamides in the presence of quinine-based bifunctional squaramide organocatalysts is described. This protocol forms a variety of 2,3-allenamides in high yields and excellent stereoselectivities, in which the elaborated introduction of intramolecular H-bonds within the N, N-bidentate amide group constitutes one of the keys to this highly enantioselective transformation. The synthetic practicality of this reaction has been demonstrated by the axis-to-center chirality transfer of allenamides to furnish enantiomerically enriched building blocks.
Texto completo:
1
Coleções:
01-internacional
Base de dados:
MEDLINE
Tipo de estudo:
Guideline
Idioma:
En
Revista:
Org Lett
Assunto da revista:
BIOQUIMICA
Ano de publicação:
2019
Tipo de documento:
Article
País de afiliação:
China