iodomethyl-[iodomethyl(dimethyl)silyl]oxy-dimethylsilane

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

Procedure: To 41.4 g. (0.1 mole) of 1,3-bis-iodomethyl-1,1,3,3-tetramethyl-disiloxane there is added dropwise with stirring 32.4 g. (0.3 mole) of 2-aminomethyl-pyridine while maintaining the temperature at 20° C. Stirring is continued at room temperature for 24 hours. The now heterogeneous mixture is combined with approximately 0.5 l. of toluene followed by approximately 0.5 l. of water. The equilibrated aqueous phase is then extracted with two 100 ml. portions of toluene. The combined organic phase is then washed twice with approximately 100 ml. of water to give 4-(2-pyridylmethyl)-2,2,6,6-tetramethyl-1-oxa-4-aza-2,6-disilacyclohexane as the crude free base. Stirring The equilibrated aqueous phase is then extracted with two 100 ml The combined organic phase is then washed twice with approximately 100 ml

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

Procedure: To 41.4 g. (0.1 mole) of 1,3-bis-iodomethyl-1,1,3,3-tetramethyl-disiloxane there is added dropwise with stirring 32.4 g. (0.3 mole) of 2-aminomethyl-pyridine while maintaining the temperature at 20° C. Stirring is continued at room temperature for 24 hours. The now heterogeneous mixture is combined with approximately 0.5 l. of toluene followed by approximately 0.5 l. of water. The equilibrated aqueous phase is then extracted with two 100 ml. portions of toluene. The combined organic phase is then washed twice with approximately 100 ml. of water to give 4-(2-pyridylmethyl)-2,2,6,6-tetramethyl-1-oxa-4-aza-2,6-disilacyclohexane as the crude free base. Stirring The equilibrated aqueous phase is then extracted with two 100 ml The combined organic phase is then washed twice with approximately 100 ml

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

Procedure: To 41.4 g. (0.1 mole) of 1,3-bis-iodomethyl-1,1,3,3-tetramethyl-disiloxane there is added dropwise with stirring 32.4 g. (0.3 mole) of 2-aminomethyl-pyridine while maintaining the temperature at 20° C. Stirring is continued at room temperature for 24 hours. The now heterogeneous mixture is combined with approximately 0.5 l. of toluene followed by approximately 0.5 l. of water. The equilibrated aqueous phase is then extracted with two 100 ml. portions of toluene. The combined organic phase is then washed twice with approximately 100 ml. of water to give 4-(2-pyridylmethyl)-2,2,6,6-tetramethyl-1-oxa-4-aza-2,6-disilacyclohexane as the crude free base. Stirring The equilibrated aqueous phase is then extracted with two 100 ml The combined organic phase is then washed twice with approximately 100 ml

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

Procedure: An amount of 33.6 g. (0.315 mole) of benzylamine is added over a period of approximately 5 minutes to 41.4 g. (0.1 mole) of 1,3-bis-iodomethyl-1,1,3,3-tetramethyl-disiloxane with stirring in a bath at room temperature. Stirring is continued at room temperature for one hour. (A slurry resulted). Addition of 50 ml. of acetonitrile gives a clear solution which is then heated to reflux for 2 hours. The cooled solution is distributed between approximately 0.5 l. of pentane and 1.5 l. of water. The aqueous layer is then extracted with one more approximately 200 ml. portion of pentane, and the combined organic layer is washed twice with approximately 300 ml. of water, dried over anhydrous sodium sulfate, filtered and evaporated in vacuo to provide a clear yellow mobile liquid. This product is then vacuum distilled to give 4-benzyl-2,2,6,6-tetramethyl-1-oxa-4-aza-2,6-disilacyclohexane; b.p. 134° to 135° C., at 13 mm Hg. (A slurry resulted) Addition of 50 ml is then heated to reflux for 2 hours The aqueous layer is then extracted with one more approximately 200 ml portion of pentane, and the combined organic layer is washed twice with approximately 300 ml of water, dried over anhydrous sodium sulfate filtered evaporated in vacuo to provide a clear yellow mobile liquid vacuum distilled