ting an alkyl compound of Group 13 element of formula R3 M' with an alcohol(R'OH) or with an alkoxide of the same element of formula M'(OR')3 to obtain a dialkylmetal alkoxide of formula R2 M'OR'; (ii) reacting the dialkylmetal alkoxide with an alkali metal alkoxide of formula MOR', wherein M is an alkali metal such as Li, Na or K to obtain an alkali metal dialkylmetal alkoxide of formula M (??