The different base-promoted regioselective reactions between dialkyl (2E,3E)-2-[(dimethylamino)methylene]-3-(1-methyl-2,5-dioxoimidazolidin-4-ylidene)succinates and 1,2-diaza-1,3-dienes are investigated. Under the appropriate reaction conditions it is possible to turn the synthesis towards 1,3-dioxo-2,3,7,7a-tetrahydro-1H-pyrrolo[1,2-c]imidazoles or 1,3-dioxo-1,2,3,5-tetrahydroimidazo[1,5-a]pyridines. Both these transformations proceed via a double-Michael-addition.
Divergent Behaviour of the Reactions Between 1,2-Diaza-1,3-dienes and 2,5-Dioxoimidazolidin-4-ylidene-succinates
ATTANASI, ORAZIO ANTONIO;FAVI, GIANFRANCO;MANTELLINI, FABIO;
2013
Abstract
The different base-promoted regioselective reactions between dialkyl (2E,3E)-2-[(dimethylamino)methylene]-3-(1-methyl-2,5-dioxoimidazolidin-4-ylidene)succinates and 1,2-diaza-1,3-dienes are investigated. Under the appropriate reaction conditions it is possible to turn the synthesis towards 1,3-dioxo-2,3,7,7a-tetrahydro-1H-pyrrolo[1,2-c]imidazoles or 1,3-dioxo-1,2,3,5-tetrahydroimidazo[1,5-a]pyridines. Both these transformations proceed via a double-Michael-addition.File in questo prodotto:
Non ci sono file associati a questo prodotto.
I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.
