An easily accessible and recyclable copper nanoparticle catalyst for the solvent-free synthesis of dipyrromethanes and aromatic amines

Sengan Megarajan; Khan Behlol Ayaz Ahmed; Rajamani Rajmohan; Pothiappan Vairaprakash; Veerappan Anbazhagan

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An easily accessible and recyclable copper nanoparticle catalyst for the solvent-free synthesis of dipyrromethanes and aromatic amines

机译：用于无溶剂合成的双甲烷和芳族胺，易于进入和可回收的铜纳米粒子催化剂

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A facile method to prepare a reusable copper nanocatalyst is reported. Transmission electron microscopy shows that the CuNPs are spherical in nature and reside in the nanoscopic template of the capping agent, guar gum. Powder X-ray diffraction studies confirm the crystalline nature of the CuNPs. The catalytic efficiency and recyclability of the synthesized CuNPs were demonstrated through the synthesis of dipyrromethanes (DPMs) and aromatic amines. Various DPMs are obtained in very good yields under solvent-free conditions and nitroarenes are converted to the corresponding amino compounds within 10?min, as evidenced by the kinetic study.

机译：报道了一种制备可重复使用的铜纳米催化剂的容易方法。透射电子显微镜表明CUNP本质上是球形的，并且存在于封端剂，瓜尔胶的纳米镜模板中。粉末X射线衍射研究证实了CUNP的晶体性质。通过合成二吡咯甲烷（DPMS）和芳族胺来证明合成的CUNP的催化效率和可再循环性。在无溶剂条件下，在非常好的产率下获得各种DPM，并且硝基甲烷在10·min内转化为相应的氨基化合物，如动力学研究所证明的。

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《RSC Advances》 |2016年第105期|共7页
作者
Sengan Megarajan; Khan Behlol Ayaz Ahmed; Rajamani Rajmohan; Pothiappan Vairaprakash; Veerappan Anbazhagan;
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1. An easily accessible and recyclable copper nanoparticle catalyst for the solvent-free synthesis of dipyrromethanes and aromatic amines [J] . Megarajan Sengan, Ahmed Khan Behlol Ayaz, Rajmohan Rajamani, RSC Advances . 2016,第105期

机译：用于无溶剂合成的双甲烷和芳族胺，易于进入和可回收的铜纳米粒子催化剂
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3. Fe3o4 nanoparticles: A highly efficient and easily reusable catalyst for the one-pot synthesis of xanthene derivatives under solvent-free conditions [J] . Ghasemzadeh Ali Mohammad, Safaei-Ghomi Javad, Zahedi Safura Journal of the Serbian Chemical Society . 2013,第6期

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7. Fe3o4 nanoparticles: A highly efficient and easily reusable catalyst for the one-pot synthesis of xanthene derivatives under solvent-free conditions [O] . Ghasemzadeh Ali Mohammad, Safaei-Ghomi Javad, Zahedi Safura 2013

机译：Fe3o4纳米粒子：一种高效且易于重复使用的催化剂，用于在无溶剂条件下一锅法合成x吨衍生物

An easily accessible and recyclable copper nanoparticle catalyst for the solvent-free synthesis of dipyrromethanes and aromatic amines

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