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- W2950740230 abstract "The syntheses of the optically pure asymmetric hydroborating agents 1 (a, R = Ph; b, R = TMS) in both enantiomeric forms are reported. These reagents are effective for the hydroboration of cis-, trans- and trisubstituted alkenes. More significantly, they exhibit unprecedented levels of selectivity in the asymmetric hydroboration of 1,1-disubstituted alkenes (28-92% ee), a previously unanswered challenge in the nearly 50 year history of this reagent-controlled process. For example, the hydroboration of alpha-methylstyrene with 1a produces the corresponding alcohol 6f in 78% ee (cf., Ipc2BH, 5% ee). Suzuki coupling of the intermediate adducts 5 produces the nonracemic products 7 very effectively (50-84%) without loss of optical purity." @default.
- W2950740230 created "2019-06-27" @default.
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- W2950740230 date "2008-12-02" @default.
- W2950740230 modified "2023-10-01" @default.
- W2950740230 title "ChemInform Abstract: 9-Borabicyclo[3.3.2]decanes and the Asymmetric Hydroboration of 1,1-Disubstituted Alkenes." @default.
- W2950740230 cites W2060458940 @default.
- W2950740230 doi "https://doi.org/10.1002/chin.200849037" @default.
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