The preparation of tetramethylphthalic anhydride.

K Chiba, E Endo, T Sakamoto, E Sato…

Index: Chiba,K. et al. Bulletin of the Chemical Society of Japan, 1976 , vol. 49, p. 2614 - 2616

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Abstract

The alkaline hydrolysis of bis (nitromethyl) prehnitene (1) with aqueous sodium hydroxide gave almost quantitatively disodium tetramethylphthalate (11). Under milder conditions the sodium salts of tetramethylphthalimide (8), N-hydroxytetramethylphthalimide (10), and 2- hydroxy-3-hydroxyimino-4, 5, 6, 7-tetramethylphthalimide (9) were fo were formed, probably as intermediate products of the above reaction. But, pentamethylphenylnitromethane (14) ...

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