Safe and Reliable Synthesis of Diazoketones and Quinoxalines in a Continuous Flow Reactor
摘要:
A flow method for the synthesis of aliphatic and aromatic diazoketones from acyl chloride precursors has been developed and used to prepare quinoxalines in a multistep sequence without isolation of the potentially explosive diazoketone. The protocol showcases an efficient in-line purification using supported scavengers with time-saving and safety benefits and in particular a reduction in the operator's exposure to carcinogenic phenylenediamines.
Safe and Reliable Synthesis of Diazoketones and Quinoxalines in a Continuous Flow Reactor
作者:Laetitia J. Martin、Andreas L. Marzinzik、Steven V. Ley、Ian R. Baxendale
DOI:10.1021/ol1027927
日期:2011.1.21
A flow method for the synthesis of aliphatic and aromatic diazoketones from acyl chloride precursors has been developed and used to prepare quinoxalines in a multistep sequence without isolation of the potentially explosive diazoketone. The protocol showcases an efficient in-line purification using supported scavengers with time-saving and safety benefits and in particular a reduction in the operator's exposure to carcinogenic phenylenediamines.