有機合成化学協会誌
Online ISSN : 1883-6526
Print ISSN : 0037-9980
ISSN-L : 0037-9980
4-置換-2, 6-ピペラジンジオンの製法について
田中 竜雄小室 正勝大田 正樹
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1976 年 34 巻 6 号 p. 425-426

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Facile preparations of 4-substituted-2, 6-piperazinediones from N-substituted-iminodiacetic acids by the ring closure were studied. The crude piperazinediones were obtained by extraction of the reaction mixture with an appropriate solvent and purified by recrystallization. Isolation of the piperazinediones by sublimation, however, was found to be troublesome. 4-Phenyl- and 4-benzyl--2, 6-piperazinediones were prepared in satisfactory yields.

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