光谱学与光谱分析 |
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FTIR Study on the Reduction of 1-Benzyl-3-Hydroxypyrrolidine-2,5-Dione |
WEI Lin, QIU Fei* |
Institute of Molecular Medicine, Huaqiao University, Engineering Research Center of Molecular Medicine, Ministry of Education, Quanzhou 362021, China |
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Abstract The title compound was synthesized by reducing (S)-1-benzyl-3-hydroxypyrrolidine-2,5-dione with sodium borohydride-iodin. The raw material, intermediate, and the end product were characterized by IR spectra and the mechanism of reduction of imide by sodium borohydride-iodin was also studied by IR spectra. According to the IR spectra, it was concluded that the product was (S)-1-bezyl-3-hydroxypyrrolidine. The mechanism of the reduction is that borane, formed in situ by reacting sodium borohydride with iodine, partly was conjugated to carbonyl to form four-member-ring intermediate and partly conjugated to nitrogen. (S)-1-benzyl-3-hydroxypyrrolidine/BH3 complex was gained when the reduction finished. The title compound was obtained by removing borane from the complex in methanol.
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Received: 2011-09-13
Accepted: 2011-12-20
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Corresponding Authors:
QIU Fei
E-mail: qiufei@hqu.edu.cn
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