Computational Studies on the Diastereospecific Lithium Variant of Oppenauer Oxidation of a Tofisopam Intermediate
JOURNAL OF ORGANIC CHEMISTRY(2024)
摘要
During the synthesis of tofisopam drug substance, an interesting diastereospecific lithium variant of Oppenauer oxidation was observed and investigated by density functional theory (DFT) calculations. The computations revealed energetic differences caused by steric differences between the diastereomers that might provide an explanation for the experimentally formed products. In addition, the trend in the measured NMR shifts was also in line with the computed values, which allowed the assignment of the absolute configuration of the diastereomers.
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