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1.发明公开Process for preparing 4-substituted phthalic anhydrides 失效Verfahren zur Herstellung 4-取代物Phthalsanureanhydride。
公开(公告)号：EP0159637A1
公开(公告)日：1985-10-30
申请号：EP85104481.8
申请日：1985-04-12
Applicant: STAUFFER CHEMICAL COMPANY
Inventor： Telschow, Jeffrey E.
IPC: C07D307/89
CPC classification number: C07C51/567 , C07C63/15
Abstract: A process for preparing substituted phthalic anhydrides, e.g. 4-methylphthalic anhydride, in which the Diels-Alder addition product of a conjugated diene, e.g. isoprene, and maleic anhydride is reacted with bromine in the presence of an acid acceptor. The acid acceptor can be present in catalytic amounts. Typical acid acceptors include dimethylformamide and pyridine.
Abstract translation: 取代的邻苯二甲酸酐的制备方法，例如 4-甲基邻苯二甲酸酐，其中共轭二烯的Diels-Alder加成产物，例如 异戊二烯和马来酸酐在酸受体的存在下与溴反应。 酸受体可以以催化量存在。 典型的酸受体包括二甲基甲酰胺和吡啶。
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公开(公告)号：EP0159637B1
公开(公告)日：1990-03-07
申请号：EP85104481.8
申请日：1985-04-12
Applicant: STAUFFER CHEMICAL COMPANY
Inventor： Telschow, Jeffrey E.
IPC: C07D307/89
CPC classification number: C07C51/567 , C07C63/15
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