Process for the preparation of stilbene derivatives

Details Process for the preparation of stilbene derivatives Process for the preparation of stilbene derivatives

1989-03-01

1990-05-01

Daus, Donald G.

Organic compounds -- part of the class 532-570 series

Organic compounds

Heterocyclic carbon compounds containing a hetero ring...

C07D41304

Patent

active

049219642

ABSTRACT:
Disclosed is a process for the preparation of stilbene compounds such as bis(2-benzoxazolyl) stilbenes by reacting a stilbenedicarboxylate such as dimethyl-4,4'-stilbenedicarboxylate with an o-aminophenol in an organic solvent such as chloronaphthalene in the presence of a catalytic amount of a tin or titanium compound. The reaction is typically carried out at a temperature of about 200.degree.-250.degree. C. and a preferred catalyst is either dibutyl tin oxide or titanium tetra-alkoxide.

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