Allyl chloride → 4,4-Dichloro-2-phenyl-4-silaheptane

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Reaction Steps

To a 500 ml, three neck, round bottomed flask equipped with a mechanical stirrer, a dropping funnel, and a reflux condenser, 6.0 g (0.03 mole) of 3-phenyl-1,1-dichloro-1-silabutane, 6.28 g (0.09 mole) of allyl chloride, and 150 μl of 1% chloroplatinic acid in isopnopanol were placed under the dry nitrogen atmosphere. The flask was then immersed in a hot water bath of 45°-50° C. The solution was stirred vigorously for three hours. Gas chromatography analysis showed that no silane was Left. Vacuum distillation of the solution gave 2.21. g (bp, 111°-2° C./0.6 mmHg) of 1,4,4-trichloro-6-phenyl-4-silaheptane and 2.63 g of 3-phenyl-1,1,1-trichloro-1-silabutane. Besides these products, a small amount of 4,4-dichloro-2-phenyl-4-silaheptane was also obtained.

Provenance & Evidence