C7-derivatization of C3-alkylindoles including tryptophans and tryptamines.
J Org Chem
; 79(22): 11254-63, 2014 Nov 21.
Article
em En
| MEDLINE
| ID: mdl-25343326
ABSTRACT
A versatile strategy for C7-selective boronation of tryptophans, tryptamines, and 3-alkylindoles by way of a single-pot C2/C7-diboronation-C2-protodeboronation sequence is described. The combination of a mild iridium-catalyzed C2/C7-diboronation followed by an in situ palladium-catalyzed C2-protodeboronation allows efficient entry to valuable C7-boroindoles that enable further C7-derivatization. The versatility of the chemistry is highlighted by the gram-scale synthesis of C7-boronated N-Boc-L-tryptophan methyl ester and the rapid synthesis of C7-halo, C7-hydroxy, and C7-aryl tryptophan derivatives.
Texto completo:
1
Coleções:
01-internacional
Base de dados:
MEDLINE
Assunto principal:
Paládio
/
Triptofano
/
Triptaminas
/
Alcaloides Indólicos
/
Irídio
Idioma:
En
Ano de publicação:
2014
Tipo de documento:
Article