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77954262036
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This product was isolated as a mixture of four diastereomers
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This product was isolated as a mixture of four diastereomers.
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20
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77954271281
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77954294124
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For other Lewis acids examined please see the Supporting Information
-
For other Lewis acids examined please see the Supporting Information.
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77954303519
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4 gave 10:1 dr with similar yields
-
4 gave 10:1 dr with similar yields.
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38
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2NEt salt should be preformed, as a standard solution
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2NEt salt should be preformed, as a standard solution.
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By using (±)-BINAP (12mol-%) and AgOAc (10 mol-%), the dr was 4.3:1 and the conversion was 14%, whereas the with use of (±)-BINAP (4 mol-%) and AgOTf (10 mol-%) the dr was 42:1 and the conversion, was 56%; see: N. Momiyama, H. Yamamoto, J. Am. Chem. Soc 2004, 126, 5360-5361.
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77954274160
-
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2, 12 h, r.t.) gave 18:1 dr (syn/anti)
-
2, 12 h, r.t.) gave 18:1 dr (syn/anti).
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