Abstract

[4+2]Cycloaddition reactions of cyclopentadiene (1a) and furan (1b) to N,N'-fumaroyldi[(2R)-bornane-10,2-sultam] (2) and to N,N'-fumaroyldi[(2R)-bornane-10,2-(2'-phenyl-pyrazol-3'-one)] (3) are presented. A correlation between the solvent polarity and the logarithm of the diastereoisomer ratio (dr) was found for the uncatalyzed [4+2]cycloaddition of 1a to 3.

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