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85088544915
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3 show similar trends (see ref 10).
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3 show similar trends (see ref 10).
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32
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85088541979
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2 10a-e: x= Me, y= H, H
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1542448188
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note
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The configurational assignment of MTPA-11 esters was unequivocal, whereas those of MTPA-12 esters was not so evident due to the small differences observed between the chemical shifts of the corresponding (R)- and (S)-MTPA derivatives. This could be a consequence of a higher steric hindrance of the ester moiety in diastereomers MPTA-12 which prevented a fixed position of the methoxy and phenyl group in the ester.
-
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39
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Frisch, M.J.1
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more..
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42
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1542763003
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Optimized geometries of all the structures are available from the authors
-
Optimized geometries of all the structures are available from the authors.
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44
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