The Stereoselective Reactivities of DL-Amino Acid <I>N</I>-Carboxyanhydrides for (−)-Menthol
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概要
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The stereoselective reactivities of some neutral DL-amino acid <I>N</I>-carboxyanhydrides for (−) -menthol were studied by varying the concentration of hydrogen chloride as a catalyst and the reaction temperature. From the results of gas-liquid-chromatographic analyses, the esterification rates of D-amino acids were shown to be higher than those of L-amino acids in all cases. The highest ratio of the esterification rate, <I>V</I><SUB>D</SUB>⁄<I>V</I><SUB>L</SUB>, is 2.37. The recovered unreacted amino acids were always enriched in the L-form. The stereoselective reactivities were influenced by the catalyst concentration and not influenced by the reaction temperature.
- 公益社団法人 日本化学会の論文
著者
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Yamamoto Hiroyuki
Institute Of High Polymer Research Faculty Of Textile Science And Technology Shinshu University
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Hayakawa Tadao
Institute for Space Biosciences and Department of Chemistry Florida State University
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Murakami Yukiko
Institute of High Polymer Research, Faculty of Textile Science and Technology, Shinshu University
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Yobiko Yoshihiro
Institute of High Polymer Research, Faculty of Textile Science and Technology, Shinshu University
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Mitani Shunji
Institute of High Polymer Research, Faculty of Textile Science and Technology, Shinshu University
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Yamamoto Hiroyuki
Institute for Chemical Research, Kyoto University
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