Cu-Catalyzed Alkynylation of Unactivated C(sp(3))-X Bonds with Terminal Alkynes through Directing Strategy.
Org Lett
; 18(9): 2040-3, 2016 05 06.
Article
en En
| MEDLINE
| ID: mdl-27074521
ABSTRACT
In this letter, we report an efficient and concise protocol for Cu-catalyzed cross-coupling of unactivated alkyl halides/peusudohalides with terminal alkynes to afford internal alkynes with the assistance of various amides as directing groups. Different alkyl halides/pseudohalides exhibited excellent reactivities, and the inactivated alkyl chlorides and sulfonates showed better reactivity than bromides/iodides. This is the first successful example to apply alkyl chlorides and sulfonates directly in cross-coupling with terminal alkynes in the absence of any additives. A Cu catalyst was found to be more effective than other transition metal catalysts. This reaction also exhibited a broad substrate scope with respect to terminal alkynes.
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1
Colección:
01-internacional
Banco de datos:
MEDLINE
Idioma:
En
Revista:
Org Lett
Asunto de la revista:
BIOQUIMICA
Año:
2016
Tipo del documento:
Article
País de afiliación:
China