Development of a Large-Scale Route to an MCH<sub>1</sub> Receptor Antagonist: Investigation of a Staudinger Ketene–Imine Cycloaddition in Batch and Flow Mode
作者:Staffan Karlsson、Rolf Bergman、Christian Löfberg、Peter R. Moore、Fritiof Pontén、Joakim Tholander、Henrik Sörensen
DOI:10.1021/acs.oprd.5b00319
日期:2015.12.18
A practical large-scale route to an MCH, receptor antagonist is described. A Staudinger beta-lactam synthesis of an imine and an in situ generated ketene was utilized as a key step for the preparation of a spiro-azetidine building block. The reaction was demonstrated in both batch and flow mode and a comparison of these techniques is described.