摘要:
Halogenated alkoxyphthalocyanine useful as dye, opto-electric functional material, and recording and storing material, particularly writable recording medium such as writable compact disc, CD-WO; a process for producing halogenated alkoxyphthalocyanine represented by general formula (8) as a mixture of several isomers thereof in a good yield by reacting alkoxyphthalocyanine represented by general formula (7) and its mixture with a halogenating agent in a mixture of water with an organic solvent; and a mixture of the compounds represented by formula (8) and an optical recording medium produced therefrom.
摘要:
Novel aromatic bismaleimido compounds represented by general formula (I): (wherein X represents (III), (lVI, (V) or (VI) (wherein R 1 , R 2 , R 3 and R 4 each represents a hydrogen atom or a methyl group)). These compounds are prepared by reacting a diamine represented by general formula (II) (wherein X is the same as defined above) with maleic anhydride and cyclizing the formed aromatic bismaleamic acid
摘要:
Novel aromatic bismaleimido compounds represented by general formula (I): (wherein X represents (III), (IV), (V) or (VI)) (wherein R1, R2, R3 and R4 each represents a hydrogen atom or a methyl group)). These compounds are prepared by reacting a diamine represented by general formula (II) (wherein X is the same as defined above) with maleic anhydride and cyclizing the formed aromatic bismaleamic acid.
摘要:
Benzophenone derivatives are obtained by treating 1,1- bis(aryl)-2,2,2-trichloroethanol with alkali. The starting 1,1- bis(aryl)-2,2,2-trichloroethanol is industrially available at low cost. The alkali is preferably a hydroxide or carbonate of an alkali metal, and is used in an amount of 0.2 to 10 mol per mol of 1,1-bis(aryl)-2,2,2-trichloroethanol.