Reaction of bromine with some cyclopentadienylalkoxy(aroxy)titaniums

Abstract

1. The reaction of bromine with cyclopentadienylalkoxy(aroxy)titaniums CpTi(OR)3, where R=C2H5, C6H5; Cp=C5H5, C5 (CH3)5, leads to the formation of CpTiBr3 in all cases except that of C5H5Ti(OC2H5)3, and in the case of the aroxy derivatives also to the products where one of the bromine atoms is replaced by the brominated phenols formed in the reaction mixture. 2. The reaction of bromine with C5H5Ti(OC2H5)3 gives the compound (C2H5O)2TiBr2·C2H5OH. 3. When C5 (CH3)5Ti(OC6H5)3 is reacted with excess bromine in the presence of UV light the aroxy groups and the hydrogens of the methyl groups in the cyclopentadienyl ligand are replaced by bromine atoms.