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- W2029208762 abstract "Binaphthol-catalyzed asymmetric Petasis reactions of salicylaldehydes with dibutyl vinylboronates and secondary amines in the presence of 4 A molecular sieves (MS) afforded products with up to 99% ee in isolated yields of 39–94%. The 99% ee of the product indicated that the reaction by the binaphthol-catalyzed pathway was roughly 500 times faster than the uncatalyzed pathway. NMR experiments (1H and 11B) showed that the amine component played a role in triggering the reaction between the binaphthol catalyst and the vinylboronate in the catalytic reaction sequence. The 4 A MS enhanced both the rate and enantioselectivity by effective removal of water from the reaction system. A novel rearrangement reaction of the unconjugated allylic amine Petasis reaction product to a conjugated allylic amine was also observed." @default.
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- W2029208762 date "2014-02-07" @default.
- W2029208762 modified "2023-09-27" @default.
- W2029208762 title "ChemInform Abstract: Catalytic Asymmetric Petasis Reactions of Vinylboronates." @default.
- W2029208762 cites W2950511465 @default.
- W2029208762 doi "https://doi.org/10.1002/chin.201408051" @default.
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