The title compounds are obtained in moderate to high yields by BF3- assisted reaction of 1-benzothiophen-3(2H)-one with nine ketones in diethyl ether at room temperature; the relative amounts of pyran 1 and ylidene 2 prove to be dependent upon electronic and steric factors.
Boron trifluoride-assisted reactions of 1-benzothiophen-3(2H)-one with various ketones: a convenient entry to 2-methylene-1-benzothiophen-3(2H)-one and/or 6H-di[1]benzothieno[3,2-b : 2,3-e]pyran derivatives
FRALEONI MORGERA, Alessandro;
1999-01-01
Abstract
The title compounds are obtained in moderate to high yields by BF3- assisted reaction of 1-benzothiophen-3(2H)-one with nine ketones in diethyl ether at room temperature; the relative amounts of pyran 1 and ylidene 2 prove to be dependent upon electronic and steric factors.File in questo prodotto:
| File | Dimensione | Formato | |
|---|---|---|---|
|
a904789a.pdf
Solo gestori archivio
Descrizione: Article
Tipologia:
PDF editoriale
Dimensione
108.55 kB
Formato
Adobe PDF
|
108.55 kB | Adobe PDF | Visualizza/Apri Richiedi una copia |
I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.
