Ambient temperature method for the generation and Diels–Alder trapping of benzofuran-2,3-quinodimethane (2,3-dimethylidene-2,3-dihydrobenzofuran)
作者:Simon B. Bedford、Michael J. Begley、Philip Cornwall、Joel P. Foreman、David W. Knight
DOI:10.1039/p19960002827
日期:——
The Ito-Saegusa method has been used to generate benzofuran-2,3-quinodimethane 10 from the corresponding silyl acetate 17b in solution at -4 degrees C. The intermediate reacts efficiently with a range of reactive Diels-Alder dienophiles with moderate to good levels of regioselection; the structure of the major diastereoisomer has been determined by X-ray analysis.
CHOU CHIN-HSING; TRAHANOVSKY W. S., J. ORG. CHEM., 51,(1986) N 22, 4402-4404
作者:CHOU CHIN-HSING、 TRAHANOVSKY W. S.
DOI:——
日期:——
Preparation of 2,3-dimethylene-2,3-dihydrobenzofuran by the flash vacuum pyrolysis of (2-methyl-3-benzofuryl)methyl benzoate