发明公开
EP0684946A1 PROCESS FOR THE PREPARATION OF BIS(2-BENZOXAZOLYL)STILBENES 失效
用于生产双(2- BENZOXAZULYL)样式BENEN。

PROCESS FOR THE PREPARATION OF BIS(2-BENZOXAZOLYL)STILBENES
摘要:
Disclosed is an improved process for the preparation of 4,4'-bis(2-benzoxazolyl)stilbene compounds by the reaction of 4,4'-stilbenedicarboxylic acid with 2-aminophenol compounds in the presence of a tin or titanium catalyst and certain solvents.
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