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AI InsightFor 2,3-dihydroxybenzaldehyde and salicylaldehyde, addition of AlCl3 to the reaction mixture led to an increase in reaction rate without any decrease in product enantiopurity.
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Özet
Using asymmetric Cobalt(III) salen catalysts, the ring-opening of epichlorohydrin by 2,3-dihydroxybenzal- dehyde and 2,4- dihydroxybenzaldehyde was found to occur at the phenolic groups most distant from the aldehydic group. Switching catalysts afforded a reversal in enantioselectivity. For 2,3-dihydroxybenzaldehyde and salicylaldehyde, addition of AlCl3 to the reaction mixture led to an increase in reaction rate without any decrease in product enantiopurity.
Abstract
Using asymmetric Cobalt(III) salen catalysts, the ring-opening of epichlorohydrin by 2,3-dihydroxybenzal- dehyde and 2,4- dihydroxybenzaldehyde was found to occur at the phenolic groups most distant from the aldehydic group. Switching catalysts afforded a reversal in enantioselectivity. For 2,3-dihydroxybenzaldehyde and salicylaldehyde, addition of AlCl3 to the reaction mixture led to an increase in reaction rate without any decrease in product enantiopurity.