Abstract: Ring cleavage reaction between alkyl (aryl) acetoxysilanes and epoxides using 5-tert-butyl-2-furanatochromium (III) and aluminium chloride as catalysts was studied and the corresponding products substituded siloxy-propyl acetate were obtained. Experimental results show that it is more advantageous in the two experimental routes to make use of 5-tert-butyl-2-furanatochromium (III) than alumium chloride.