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- W2148816137 abstract "A chiral quaternary ammonium amide was generated in situ from N,O-bis(trimethylsilyl)acetamide (BSA) as non-nucleophilic Brønsted base precursor and the combination of chiral quaternary ammonium halide/sodium aryloxide as chiral Lewis base. This system was applied to an anti-selective organocatalytic direct vinylogous aldol (ODVA) reaction of (5H)-furan-2-one derivatives with aldehydes. Several 5-(1′-hydroxy)-γ-butenolides were obtained in good diastereomeric ratios (up to 95/5) and excellent enantioselectivities (up to 94%) with both aliphatic or (hetero)aromatic aldehydes, so providing a rare example of general and efficient conditions for the ODVA reaction." @default.
- W2148816137 created "2016-06-24" @default.
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- W2148816137 date "2013-03-15" @default.
- W2148816137 modified "2023-10-04" @default.
- W2148816137 title "Chiral Quaternary Ammonium Aryloxide/<i>N,O</i>-Bis(trimethyl- silyl)acetamide Combination as Efficient Organocatalytic System for the Direct Vinylogous Aldol Reaction of (<i>5H</i>)-Furan-2-one Derivatives" @default.
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- W2148816137 doi "https://doi.org/10.1002/adsc.201201041" @default.
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