Three cinnamyl borates, B(OCH2-CH = CH-C6H5)3(I), B(OCH2-CH=CH-C6H5)22O (II) and OB(OCH2-CH=CH-C6H5)3(III) have been synthesized by heating cinnamyl alcohol with boric oxide undervacuo. (I) was also synthesized by alcoholysis of ethyl borate with cinnamyl alcohol. The reactions of aluminium isopropoxide with cinnamyl alcohol in different stoichiometric ratios yield A1OCH(CH3)23-n(OCH2-CH=CH-C6H5)n(where n = 1,2 or 3). Tetracinnamoxides of titanium and germanium and pentacinnamoxides of niobium and tantalum as well as di-n-butyltin dicinnamoxide and tri-n-butyltin monocinnamoxide were also synthesized by alcoholysis reactions. IR and PMR spectral properties of these new derivatives have been discussed.
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