Ketimines aqueous hydrolysis

In some cases the intermediate ketimines can be obtained229 by hydrolysis under sufficiently mild conditions, e.g., by aqueous ammonium chloride at... 

In a variant of the process, instead of the ketone monomer, a ketimine monomer is used to prepare a poly(ether ketimine).The ketimine polymer can be dissolved in NMP. Tbe ketimine groups in the polymer can then be hydrolyzed by means of a dilute aqueous acid solution. Hydrolysis gives back the ketone polymer that precipitates out as a fine powder. Particles of the size of 0.5-5 pm are produced by this procedure. 

Steric hindrance also appears to affect the resistance of the azo-methine linkage to hydrolysis. A chloro substituent in the ortho position of diphenyl ketimine causes a much slower rate of hydrolysis than does a similar substituent in either the meta or para position. TTie rates of hydrolysis of dimethyl diphenyl ketimines decrease in the order shown. Several hours of refluxing in aqueous solution are re-... 

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