Convenient syntheses of unsymmetrical imidazolidines.
J Org Chem
; 67(9): 3109-14, 2002 May 03.
Article
em En
| MEDLINE
| ID: mdl-11975574
ABSTRACT
Unsymmetrical imidazolidines 10-14, optically active imidazolidines 20-22, and 2,3-dihydro-1H-benzimidazoles 28 and 29 were synthesized in good to excellent yields by Mannich reactions of 1,2-ethanediamines 8a-c, 18a-c, or N-methyl-1,2-benzenediamine (26a) with benzotriazole and formaldehyde, followed by the nucleophilic substitution of the benzotriazolyl group with C-nucleophiles (Grignard reagents, sodium cyanide), an S-nucleophile (benzenethiol), and a P-nucleophile (triethyl phosphite).
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Base de dados:
MEDLINE
Idioma:
En
Ano de publicação:
2002
Tipo de documento:
Article