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- W2022041460 abstract "The development of efficient and stereoselective methods to produce 1,4-disubstituted-2-oxopiperazine in enantiomerically pure form, from a readily available starting material is crucial. Herein, we report a reduction modification to our previously described synthesis of 1,4-disubstituted-2-oxopiperazine and also two original shortly accessed pathways. These new pathways can be routinely performed on a multigram scale and should rapidly find a place in the preparation of the 3-substituted-2-oxopiperazine diastereomers. Stereoselective alkylation of 1,4-disubstituted-2-oxopiperazine led to the corresponding (3S)-diastereomer or (3R)-diastereomer from the corresponding 2-oxopiperazine enantiomer with the chiral inductor substituted at the N1 (1∗) position, respectively, in good yield." @default.
- W2022041460 created "2016-06-24" @default.
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- W2022041460 date "2008-07-01" @default.
- W2022041460 modified "2023-09-25" @default.
- W2022041460 title "New efficient enantioselective synthesis of 2-oxopiperazines: a practical access to chiral 3-substituted 2-oxopiperazines" @default.
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- W2022041460 doi "https://doi.org/10.1016/j.tetasy.2008.06.030" @default.
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