申请人:Varma Rajender S.
公开号:US20110054180A1
公开(公告)日:2011-03-03
This invention relates to the use of nano-organocatalysts, and, more specifically, to the use of magnetic nanomaterial-supported organocatalysts. It is an object of the present invention to provide “green” catalysts and protocols. According to one embodiment of the invention, a nano-organocatalyst in the form of a magnetic nanomaterial-supported organocatalyst is provided. According to other embodiments of the invention, glutathione and cysteine are provided as organocatalysts and magnetic nanomaterial-supported glutathione and magnetic nanomaterial-supported cysteine are provided for use as nano-organocatalysts. According to another embodiment of the invention, a method of using a recyclable magnetic nanomaterial-supported organocatalyst using a totally benign aqueous protocol, without using any organic solvent in the reaction or during the workup, is provided. According to a further embodiment of the invention, a recyclable magnetic nanomaterial-supported organocatalyst for various organocatalytic reactions, including but not limited to Paal-Knorr reactions, aza-Michael addition and pyrazole synthesis, is provided.
本发明涉及纳米有机催化剂的使用,更具体地涉及磁性纳米材料支撑的有机催化剂的使用。本发明的目的是提供“绿色”催化剂和方案。根据本发明的一个实施例,提供了一种磁性纳米材料支撑的有机催化剂的纳米有机催化剂。根据本发明的其他实施例,提供了谷胱甘肽和半胱氨酸作为有机催化剂,以及用作纳米有机催化剂的磁性纳米材料支撑的谷胱甘肽和磁性纳米材料支撑的半胱氨酸。根据本发明的另一个实施例,提供了一种使用可回收磁性纳米材料支撑的有机催化剂的方法,使用完全良性的水相方案,在反应过程中或处理过程中不使用任何有机溶剂。根据本发明的另一个实施例,提供了一种用于各种有机催化反应的可回收磁性纳米材料支撑的有机催化剂,包括但不限于Paal-Knorr反应、aza-Michael加成和吡唑合成。