Dimethyl carbonate in the regio- and stereocontrolled opening of three-membered heterocyclic rings
作者:Giuliana Righi、Paolo Bovicelli、Maurizio Barontini、Ilaria Tirotta
DOI:10.1039/c2gc16241e
日期:——
In an attempt to replace harmful or carcinogenic solvents (such as dichloromethane, acetone, etc.) with non-harmful and greener ones, the possibility of performing four already developed ring-opening methodologies in a more eco-friendly media, such as DMC, has been investigated. The results show that the usual employed solvents (CH2Cl2, Et2O, CH3CN, etc.) can be easily replaced by DMC: not only the stereo- and regioselectivity is conserved, but also the work-up is simplified to a filtration, therefore reducing considerably the amount of solvents employed in the processes, and all the reactions are performed at room temperature, even the ones previously reported at low temperatures.
为了用无害和更环保的溶剂取代有害或致癌溶剂(如二氯甲烷、丙酮等),研究人员研究了在更环保的介质(如 DMC)中进行四种已开发的开环方法的可能性。结果表明,通常使用的溶剂(CH2Cl2、Et2O、CH3CN 等)可以很容易地被 DMC 取代:不仅立体选择性和区域选择性得以保留,而且工作过程简化为过滤,从而大大减少了过程中使用的溶剂量,而且所有反应都是在室温下进行的,甚至包括以前报道过的在低温下进行的反应。