Method for producing stannic tertiary alkoxide

An anhydrous process for producing a stannic tertiary-alkoxide, wherein at least about 4 moles of an alkylamine and at least about 4 moles of a tertiary alcohol are employed as reagents per mole of a stannic tetrahalide, said process comprising:

• reactively combining at least a portion of said alkylamine, wherein said amine is a secondary or tertiary alkylamine having up to 10 carbon atoms in each alkyl group thereof, with said stannic tetrahalide so as to form a reaction product thereof;
• adding to said reaction product a tertiary alkyl alcohol having from 4 to 8 carbon atoms and reacting same so as to form an amine hydrohalide and said stannic tertiary-alkoxide and, wherein the remainder, if any, of said amine is added to said reaction product substantially no later than the completion of the addition of said tertiary alkyl alcohol;
• and isolating said stannic tertiary-alkoxide.

An anhydrous process for forming a compound of the formula Sn(OR).sub.4 wherein R is a tertiary alkyl group containing 4 to 8 carbon atoms which comprises:

• reacting a stannic tetrahalide with a secondary or tertiary alkylamine in an anhydrous inert organic diluent, wherein each alkyl group of said amine contains between 1 and 10 carbon atoms and wherein the molar ratio of said amine to said stannic halide is at least about 4:1, so as to form a dispersion of an alkylamine-stannic halide reaction product;
• reacting a tertiary alkyl alcohol, wherein the alkyl group contains 4 to 8 carbon atoms, with said dispersion of said reaction product in a molar ratio of at least about 4:1, based on said stannic tetrahalide, so as to form an amine hydrohalide solid reaction product and said compound;
• and isolating said compound.

An anhydrous process for producing tin tetra(tertiary-butoxide) or tin tetra(tertiary-pentoxide) using stannic tetrachloride, diethylamine and tertiary-pentanol or tertiary-butanol with the respective amounts of said pentanol or said butanol and the amount of said diethylamine being in a molar ratio to said stannic tetrachloride of at least about 4:1 said process comprising:

• reacting at least a portion of said diethylamine with said stannic chloride in the presence of an inert, anhydrous, organic diluent so as to form a reaction product;
• adding said pentanol or said butanol to said reaction product and reacting same so as to form a dispersion of an amine hydrochloride in a solution containing said tin butoxide or said tin pentoxide, wherein the remainder of said diethylamine, if any, is added to said reaction product substantially no later than the completion of the addition of said butanol or said pentanol;
• separating said amine hydrochloride from said dispersion and recovering said tin butoxide or said tin pentoxide from said solution.