Modular synthesis of heterocyclic carbene precursors.
J Org Chem
; 71(16): 5969-79, 2006 Aug 04.
Article
en En
| MEDLINE
| ID: mdl-16872179
ABSTRACT
A series of N-heterocyclic carbene precursors, containing an imidazoline or tetrahydropyrimidine framework, were prepared from omega-chloroalkanoyl chlorides. The sequential attachment of nitrogen nucleophiles and subsequent ring closure gave, depending on the reagents used, either the desired dihydroimidazolium and tetrahydropyrimidinium salts or their parent heterocycles. In this latter case, the second substituent was introduced in an alkylation step. The preparation of carbene precursors bearing chiral or bulky substituents was acieved with comparable efficiency.
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01-internacional
Base de datos:
MEDLINE
Idioma:
En
Revista:
J Org Chem
Año:
2006
Tipo del documento:
Article
País de afiliación:
Hungria