Air-stable zirconocene bis(perfluorobutanesulfonate) as a highly efficient catalyst for synthesis of α-aminophosphonates via Kabachnik–Fields reaction under solvent-free condition

Air-stable zirconocene bis(perfluorobutanesulfonate) as a highly efficient catalyst for synthesis of α-aminophosphonates via Kabachnik–Fields reaction under solvent-free condition
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空气稳定的二茂锆双(全氟丁磺酸)作为高效催化剂,用于在无溶剂条件下通过Kabachnik-Fields反应合成α-氨基膦酸盐

DOI:
10.1016/j.catcom.2013.10.013
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发表时间:
2014-01
影响因子:
3.7
通讯作者:
Shuangfeng Yin
Shuangfeng Yin
中科院分区:
化学3区
文献类型:
--
作者:
Ningbo Li;Xie Wang;Renhua Qiu;Xinhua Xu;Jinyang Chen;Xiaohong Zhang;Sihai Chen;Shuangfeng Yin

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用C4 F9 SO 3Ag处理Cp 2 ZrCl 2,合成了二(全氟丁烷磺酸)茂锆[Cp 2 Zr(OSO 2C 4F 9)2·2 H2O],发现它具有空气稳定性、耐水性、高热稳定性和强的刘易斯酸性。在温和无溶剂条件下,该配合物对醛/酮、胺和亚磷酸二乙酯的Kabachnik-Fields反应具有很高的催化活性。此外,它可以在五个循环的测试中重复使用而不损失活性。与文献报道的Cp_2Zr(OSO_2C_8F_17)_2·3H_2O·THF配合物相比,该配合物具有更好的催化活性。
Zirconocene bis(perfluorobutanesulfonate) [Cp2Zr(OSO2C4F9)2·2H2O] was successfully synthesized by treatment of Cp2ZrCl2with C4F9SO3Ag, and was found to have the nature of air-stability, water tolerance, high thermal stability and strong Lewis acidity. This complex showed high catalytic efficiency for the synthesis of α-aminophosphonates via Kabachnik–Fields reaction of aldehydes/ketones, amines and diethyl phosphite under mild and solvent-free conditions. Furthermore, it can be reused without loss of activity in a test of five cycles. Compared with our previously reported complex of Cp2Zr(OSO2C8F17)2·3H2O·THF, this complex showed better catalytic activity.
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