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- W2952076267 abstract "Successive treatment of (R)-N-acylsultams 4 with NHDMS/alkyl halides or NHDMS/acyl chlorides provides alkylated or acylated products 6 or 7. Diastereoselective reductions of 7 with Zn(BH4)2 or NaHB(sBu)3 gives “syn”- or “anti”-aldols 8 or 9. Reaction of 4 with BEt3/TfOH/EtN(iPr)2 followed by addition of aromatic or aliphatic aldehydes affords diastereomerically pure “synrd-aldols 10. Non-destructive removal of auxiliary 3 from 6, 8, 9 and 10 yields enantiomerically pure products 12 to 16." @default.
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- W2952076267 date "1990-01-01" @default.
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- W2952076267 title "Chiral toluene-2,α-sultam auxiliaries: Asymmetric alkylations, acylations and aldolizations of N-acyl derivatives" @default.
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- W2952076267 doi "https://doi.org/10.1016/s0040-4039(00)97794-3" @default.
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