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- W2046004458 abstract "Abstract A number of new chiral 2‐(α‐bromoalkyl)pyrrolinium salts and 2‐(α‐selenoalkyl)pyrrolidines were synthesized by the halocyclisation and selenocyclisation, respectively, of N ‐(alkenylidene)alkylamines and subsequent reduction. These cyclisations were implemented in a diastereomeric fashion for the first time. Substrate control (starting imines possessing chirality in the N ‐alkyl or the N ‐alkenyl substituent) and reagent control (chiral organoselenenyl bromides) wereapplied. Asymmetric induction by stereocentres of the alkenylidene or double asymmetric induction by chiral selenenyl bromides on unsaturated imines with a chiral N ‐alkyl group resulted in diatereoselectivities up to 84:16. (© Wiley‐VCH Verlag GmbH & Co. KGaA, 69451 Weinheim, Germany, 2007)" @default.
- W2046004458 created "2016-06-24" @default.
- W2046004458 creator A5025990312 @default.
- W2046004458 creator A5078171802 @default.
- W2046004458 date "2007-06-01" @default.
- W2046004458 modified "2023-10-17" @default.
- W2046004458 title "Diastereoselective Cyclisation of <i>N</i>‐Alkenylideneamines into 3,4‐Dihydro‐2<i>H</i>‐pyrrol‐1‐ium Halides" @default.
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- W2046004458 doi "https://doi.org/10.1002/ejoc.200601081" @default.
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