Journal of Heterocyclic Chemistry p. 1233 - 1237 (1996)
Update date:2022-08-12
Topics:
Cauliez, Pascal
Fasseur, Dominique
Couturier, Daniel
Rigo, Benoit
Kolocouris, Antonios
The carbamoylation of some lactams derivatived from pyroglutamic acid has been studied; better yields were obtained starting from the unsubstitued lactam (toluene, 80°) rather than starting with the N-silyllactam (room temperature), although these latter reaction conditions could be interesting for heat sensitive compounds. Methyl and phenyl isothiocyanate react only with the sodium salt of methyl pyroglutumate, giving 1,5-diaddition products.
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(1977)
