trimethylsulfanium;chloride

Conditions: temp:0.00; pressure:0.00; stir:; See reaction.notes.procedure_details.

Procedure: Following the procedure outlined in Example 1, except that di-n-octyltin dichloride is used in place of dimethyltin dichloride, n-octyl chloride in place of methyl chloride, and trimethylsulfonium chloride in place of trimethylsulfonium iodide, there is obtained n-octyltin trichloride.

Conditions: temp:0.00; pressure:0.00; stir:; See reaction.notes.procedure_details.

Procedure: According to a preferred embodiment of the invention, NaOH is added to a mixture consisting of 2,2,3,6-tetramethyl-1-cyclohexanone and trimethylsulfonium chloride in dimethylsulfoxide. The reaction is slightly exothermic, hence the necessity to maintain an external cooling of the reaction mixture so as to keep the temperature at about 25°-30° C. Good stirring is also applied for about 6 hr. 4,4,5,8-Tetramethyl-1-oxaspiro[2.5]octane is then obtained by extraction of the resulting mixture with petrol ether, concentration of the organic extracts and fractional distillation is added to a mixture hence the necessity to maintain an external cooling of the reaction mixture so as at about 25°-30° C

Conditions: temp:0.00; pressure:0.00; stir:; See reaction.notes.procedure_details.

Procedure: Following the procedure outlined in Example 1, except that di-n-octyltin dichloride is used in place of dimethyltin dichloride, n-octyl chloride in place of methyl chloride, and trimethylsulfonium chloride in place of trimethylsulfonium iodide, there is obtained n-octyltin trichloride.

Conditions: temp:0.00; pressure:0.00; stir:; See reaction.notes.procedure_details.

Procedure: Following the procedure outlined in Example 1, except that di-n-octyltin dichloride is used in place of dimethyltin dichloride, n-octyl chloride in place of methyl chloride, and trimethylsulfonium chloride in place of trimethylsulfonium iodide, there is obtained n-octyltin trichloride.

Conditions: temp:0.00; pressure:0.00; stir:; See reaction.notes.procedure_details.

Procedure: According to a preferred embodiment of the invention, NaOH is added to a mixture consisting of 2,2,3,6-tetramethyl-1-cyclohexanone and trimethylsulfonium chloride in dimethylsulfoxide. The reaction is slightly exothermic, hence the necessity to maintain an external cooling of the reaction mixture so as to keep the temperature at about 25°-30° C. Good stirring is also applied for about 6 hr. 4,4,5,8-Tetramethyl-1-oxaspiro[2.5]octane is then obtained by extraction of the resulting mixture with petrol ether, concentration of the organic extracts and fractional distillation. is added to a mixture hence the necessity to maintain an external cooling of the reaction mixture so as at about 25°-30° C

Conditions: temp:0.00; pressure:0.00; stir:; See reaction.notes.procedure_details.

Procedure: According to a preferred embodiment of the invention, NaOH is added to a mixture consisting of 2,2,3,6-tetramethyl-1-cyclohexanone and trimethylsulfonium chloride in dimethylsulfoxide. The reaction is slightly exothermic, hence the necessity to maintain an external cooling of the reaction mixture so as to keep the temperature at about 25°-30° C. Good stirring is also applied for about 6 hr. 4,4,5,8-Tetramethyl-1-oxaspiro[2.5]octane is then obtained by extraction of the resulting mixture with petrol ether, concentration of the organic extracts and fractional distillation is added to a mixture hence the necessity to maintain an external cooling of the reaction mixture so as at about 25°-30° C