Synthesis from benzhydrols

Tractable polymers can be prepared when amino and anhydride functions are not located on the same aromatic ring, and different strategies were employed to obtain soluble polymer. AB benzhydrol imide was prepared by polycondensation of 4-(3-amino-l-hydroxymethylene) phtlialic acid monomethyl ester in NMP. The polymer soluble in NMP has been used as adhesive and coating.56 A second approach was based on an ether imide structure. AB aminophenylether phthalic acids (Fig. 5.34) were prepared by a multistep synthesis from bisphenols.155 The products are stable as hydrochloride, and the polycondensation takes place by activation with triphenylphosphite. The polymers are soluble in an aprotic polar... 

Oxo compds. from alcohols. Ba(Mn04)2 added to a soln. of benzhydrol in acetonitrile, and the mixture refluxed for 1 h - benzophenone. Y 99%. Ba(Mn04)2 is a mild, stable oxidant, efficiently oxidizing prim, and sec. alcohols in aprotic media, whilst leaving double bonds unaffected sec. benzylic hydroxyl groups are oxidized more rapidly than non-benzylic hydroxy groups. F.e., also oxidation of (3-hydroxyketones, and preparation of disulfides from mercaptans, s. H. Firouzabadi et al.. Synthesis 1989, 378-80. 

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