ORGANOSILICON DERIVATIVES OF 2-MERCAPTO-SUBSTITUTED BENZOXAZOLES, BENZOTHIAZOLES AND BENZIMIDAZOLES

The interactions of sodium salts of 2-mercaptobenzoxazole, 2-mercaptob enzothiazole and 2-mercaptobenzimidazole with (chloromethyl)trimethyl- , chloromethyl(dimethoxy)methyl- or (chloromethyl)trimethoxysilanes ha ve been shown to result in the corresponding previously unknown (2-het erylthiomethyl)triorganylsilanes. Transetherification of (2-heteryl-th iomethyl)trimethoxysilanes with triethanolamine gives 1-(2-benzoxazoly lthiomethyl)-, 1-(2-benzothiazolythiomethyl)- and 1-(2-benzimidazolylt hiomethyl)silatranes. The reaction of the corresponding alkoxysilanes with boron trifluoride etherate leads to (2-benzoxazolythiomethyl)- an d (2-benzothiazolylthiomethyl)-substituted trifluorosilanes and methyl difluorosilanes having a dragonoid chelate structure. By the hydrolysi s of (2-heterylthiomethyl)trimethoxysilanes, new organosilicon sorbent s, poly(2-heteryl-thiomethyl)silsesquioxanes have been synthesized.