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Due to the differences in the priority assigned to a dialkylamino group versus a chloro group, the R-acid chloride produces the S-Mosher amide
-
Due to the differences in the priority assigned to a dialkylamino group versus a chloro group, the R-acid chloride produces the S-Mosher amide.
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8244241143
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The opposite rotamer is observed exclusively for the Mosher amides of norcocaine described in ref 12b, presumably due to the presence of β-substituents at C2 and C3
-
The opposite rotamer is observed exclusively for the Mosher amides of norcocaine described in ref 12b, presumably due to the presence of β-substituents at C2 and C3.
-
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41
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8244250170
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note
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The major rotamer observed with one Mosher amide derived from one enantiomer of tropane is enantiomeric with the major rotamer derived from the opposite enantiomer of tropane with the opposite Mosher amide. Since these two compounds have identical NMR spectra, mixtures of Mosher amides can striaghtforwardly be assigned.
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note
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While the intermediate alcohol is not thermally stable, care must be taken to remove all of the ethanol before the elimination step. Typically, the crude oil was pumped under high vacuum (∼0.5 torr) for at least 30 min before the next step.
-
-
-
-
54
-
-
8244254413
-
-
Note that at lower pH, the BOC protecting group will be removed
-
Note that at lower pH, the BOC protecting group will be removed.
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