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Enantiomeric excesses of up to 99% have been obtained in Heck reactions of cyclic olefins with (phosphanyldihydrooxazole)Pd catalysts [Eq. (a)]. In contrast to analogous (BINAP)Pd-catalyzed reactions, essentially no isomerization of the products by CC bond migration is observed.
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Loiseleur et al. (1996) studied this question.
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