The reaction of cyclo-triphosphate with ethylenediamine.
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概要
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The reaction of sodium <I>cyclo</I>-triphosphate (P<SUB>3m</SUB>) with ethylenediamine (en) was studied with special attention paid to the kinds and amounts of products under various conditions and to its reaction mechanism. 1) The reaction of P<SUB>3m</SUB> with ethylenediamine in the pH range of 8–12 gave six new compounds; three of them were identified as <I>N</I>,<I>N</I>-bis(2-aminoethyl)phosphorodiamidate (P<SUB>1</SUB>-en<SUB>2</SUB>), <I>N</I>-(2-aminoethyl)amidodiphosphate (P<SUB>2</SUB>-en), and <I>N</I>-(2-aminoethyl)-<I>P</I>-amidotriphosphate (P<SUB>3</SUB>-en). 2) The formation of P<SUB>3</SUB>-en and P<SUB>2</SUB>-en was most favored at a pH near 10(about 32 and 9% respectively), while that of P<SUB>1</SUB>-en<SUB>2</SUB> proceeded extensively at pH 10–12(about 12%). 3) The amounts of products varied greatly depending on the mixing ratio of P<SUB>3m</SUB> and ethylenediamine. P<SUB>1</SUB>-en<SUB>2</SUB> was the predominant product at en/P<SUB>3m</SUB>>1, while P<SUB>3</SUB>-en was at en/P<SUB>3m</SUB>≤1. 4) At a pH value below 10, tetra(P<SUB>4</SUB>) and pentaphosphate (P<SUB>5</SUB>) were formed in addition to the above products. The reaction between P<SUB>3m</SUB> and ethylenediamine scarcely proceeded under acidic conditions. 5) Ortho-(P<SUB>1</SUB>), pyro-(P<SUB>2</SUB>), and triphosphate (P<SUB>3</SUB>) did not react with ethylenediamine at all. 6) The reaction mechanism between P<SUB>3m</SUB> and ethylenediamine was discussed.
- 公益社団法人 日本化学会の論文
著者
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TSUHAKO Mitsutomo
Kobe Pharmaceutical University
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NARIAI Hiroyuki
Department of Chemical Science and Engineering, Faculty of Engineering, Kobe University
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MOTOOKA Itaru
Department of Chemical Science and Engineering, Faculty of Engineering, Kobe University
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Ohashi Shigeru
Department of Chemistry Faculty of Science Kanazawa University
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Nakahama Akiko
Kobe Women's College of Pharmacy
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Nakahama Akiko
Kobe Women's College of Pharmacy
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Ohashi Shigeru
Department of Chemistry, Faculty of Science, Kyushu University 33
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