Novel crowned cobalt (II) complex containing an ionic liquid: A green and efficient catalyst for the one-pot synthesis of chromene and xanthene derivatives starting from benzylic alcohols
作者:Sanaz Naderi、Reza Sandaroos、Sahar Peiman、Behrooz Maleki
DOI:10.1016/j.jpcs.2023.111459
日期:2023.9
transform IR, inductively coupled plasma, X-ray diffraction, and thermogravimetric analyses. This catalyst was used in the synthesis of xanthenes and chromenes. In these syntheses, an alcohol was used instead of an aldehyde or a ketone. In all the reactions, the catalyst containing the crown ether and the ionic liquid exhibited greater activity than the analogs without them. The presence of the crown
在这项工作中,一个新的席夫碱连接到一个合成了离子液体和冠醚并与钴 (II) 配位,然后通过傅里叶变换红外、电感耦合等离子体、X 射线衍射和热重分析对其进行了表征。该催化剂用于合成呫吨和色烯。在这些合成中,使用醇代替醛或酮。在所有反应中,含有冠醚和离子液体的催化剂比不含它们的类似物表现出更高的活性。冠醚环和离子液体的存在增加了催化剂在水相中的溶解度,并增加了它作为路易斯酸与活性物质的接触面,增加了醇的氧化过程,从而提高了反应速度反应。