| Synthesis of 1,3,4-Diazaphospholidin-2-One-4-Oxides by Mannich-Type Reaction and Structure Analysis of Products |
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| 作者姓名： | 陈茹玉 冯克胜 刘小兰 孙命 缪方明 |
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| 作者单位： | Institute of Elemento-Organie Chemistry，Nankai University，Tianjin 300071，PRC，Institute of Elemento-Organie Chemistry，Nankai University，Tianjin 300071，PRC，Chemistry Deportment，Tianjin Normal University，Tianjin 300073，PRC，Chemistry Deportment，Tianjin Normal University，Tianjin 300073，PRC，Chemistry Deportment，Tianjin Normal University，Tianjin 300073，PRC |
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| 摘 要： | The Mannich-type reaction of phenylurea with phenyl dichlorophosphine and aldehydes (or ketones) is studied in this paper. It is found that straight chain and cyclic products are obtained respectively, when different solvents are used.The ways of cyclization are affected by the substituents of ketones.There exist two geometrical isomers for each of the title compounds which are proved by their ~1H NMR and ~(31)P NMR spectra, and the configuration of each isomer is confirmed by means of X-ray diffraction and ~1H NMR spectra. Besides, it is found that the five-membered phosphorus heterocycle is of a plane conformation with a dπ-pπ bond between P and N.
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Synthesis of 1,3,4-Diazaphospholidin-2-One-4-Oxides by Mannich-Type Reaction and Structure Analysis of Products |
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| CHEN Ru-Yu FENG Ke-Sheng.Synthesis of 1,3,4-Diazaphospholidin-2-One-4-Oxides by Mannich-Type Reaction and Structure Analysis of Products[J].Science in China(Chemistry),1993(3). |
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| Authors: | CHEN Ru-Yu FENG Ke-Sheng |
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| Abstract: | |
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| Keywords: | Mannich-type reaction isomer d_x-p_x bond |
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