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公开(公告)号:US06921827B2
公开(公告)日:2005-07-26
申请号:US10415569
申请日:2001-11-14
IPC分类号: C07D333/52 , C07D333/56 , C07D333/64 , C07D409/00
CPC分类号: C07D333/64 , C07D333/56
摘要: The present invention relates to a process for preparing a compound of formula (I): which includes cyclodehydrating a compound of formula (II): in the presence of an acid activated clay or acid activated zeolite catalyst and in the presence of a suitable solvent
摘要翻译: 本发明涉及一种制备式(I)化合物的方法:其包括将式(II)化合物环状脱水:在酸活化的粘土或酸活化的沸石催化剂存在下,并在合适的溶剂