发明公开
EP0643694A1 A PROCESS FOR THE PREPARATION OF ESERETHOLE 失效
用于生产ESERETHOLEN。

A PROCESS FOR THE PREPARATION OF ESERETHOLE
摘要:
A process for the preparation of 1,3-dimethyl-5-hydroxy-oxindole of formula (II) which comprises the reaction of 4-(N-methylamino)phenol with 2-halogen-propinol chloride and cyclization of the resulting compound in the presence of Lewis acids, and the conversion thereof to eserethole.
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