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.
Titolo: | 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 | |
Autori: | ||
Data di pubblicazione: | 1999 | |
Rivista: | ||
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. | |
Handle: | http://hdl.handle.net/11368/2888354 | |
Digital Object Identifier (DOI): | http://dx.doi.org/10.1039/A904789A | |
Appare nelle tipologie: | 1.1 Articolo in Rivista |
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