Diels-Alder reactions of quinol lactones: a change of regioselectivity with stannic chloride catalysis.
Lewis acid-mediated Diels-Alder reactions of quinol lactone 2 gave regioselectivity opposite to that of the uncatalyzed reaction. Compound 12 is proposed as the reactive intermediate generated by the reaction of 2 with stannic chloride.
Kraus
George A
GA
Department of Chemistry, Iowa State University, Ames, Iowa 50011, USA. gakraus@iastate.edu
Cui
Wenge
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