Journal of the American Chemical Society p. 4386 - 4399 (1990)
Update date:2022-09-26
Topics: Lewis acid NMR spectroscopy Cyclization Preparation Reaction Optimization Catalyst Screening Gas Chromatography
Blumenkopf, Todd A.
Bratz, Matthias
Casta?eda, Armando
Look, Gary C.
Overman, Larry E.
Rodriguez, Domingo
Thompson, Andrew S.
The Lewis acid promoted cyclization of 20 5-alkenyl acetals is reported. Oxocenes with Δ4 unsaturation (3,6,7,8-tetrahydro-2H-oxocins) can be accessed in this convenient fashion with moderate to excellent efficiency and with perfect regiochemic
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