(5R)-3-ethylmorpholine hemioxalate 、
2-chloro-N-(6-(2-morphplino-4-oxo-4H-chromen-8-yl)dibenzo[b,d]thiophen-2-yl)acetamide 以
异丁酰胺 为溶剂,
以24%的产率得到2-[(3R)-3-ethylmorpholin-4-yl]-N-[6-(2-morpholino-4-oxo-4H-chromen-8-yl)dibenzo[b,d]thiophen-2-yl]acetamide