Process for the preparation of peri-dichalcogeno polycyclic...

Details Process for the preparation of peri-dichalcogeno polycyclic... Process for the preparation of peri-dichalcogeno polycyclic...

C - Chemistry, Metallurgy

07

D

C07D 345/00 (2006.01) C07D 339/04 (2006.01) C07D 495/06 (2006.01) C07D 517/06 (2006.01) H01B 1/12 (2006.01)

Patent

CA 2061901

FM/6-18583/A Process for the preparation of peri-dichalcogeno polycyclic aromatic compounds Abstract of the Disclosure A process for the preparation of peri-dichalcogeno polycyclic aromatic compounds by preparing in a first step, in an amidic solvent, an alkali metal sulfide, selenide or telluride which, in a second step, is reacted with a peri-halogeno aromatic compound, which process comprises reacting in said first step an alkali metal base with elemental sulfur, selenium or tellurium at elevated temperature.

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