Synthesis of thiaphosphetane, thiadiphosphetane and thiazadiphosphetidine derivatives from the reaction of phosphacumulenes, phosphallene and phosphinimine with Lawesson's reagent
Egyptian Journal of Chemistry. 2007; (Special Issue): 59-67
en Inglés
| IMEMR
| ID: emr-82190
ABSTRACT
The active phosphacumulene ylides namely, N-phenylimino-[2], 2-oxo- [4] or 2-thioxo-vinylidenetriphenylphosphorane [6] are nucleophilic reagents which can be considered as versatile synthons for the synthesis of new heterocycles. They react with Lawesson's reagent [1] to give the corresponding thiaphosphetane derivatives 3, 5 and 7 respectively, which constitute an important class of heterocyclic compounds with medicinal and biological importance. On the other hand, Lawesson's reagent [1] can be converted by reaction with the active heteroallylic phosphonium ylide, hexaphenylcarbodiphosphorane [8], into the thiadiphosphetane 9. When the phosphinimine 10 reacts with Lawesson's reagent [1], the thiazadiphosphetidine 11 was obtained
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Índice:
IMEMR (Mediterraneo Oriental)
Asunto principal:
Compuestos Heterocíclicos
/
Indicadores y Reactivos
Idioma:
Inglés
Revista:
Egypt. J. Chem.
Año:
2007
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