THE REACTION OF DICHLORODIETHOXYSILANE WITH ISOPRENE IN THE PRESENCE OF MAGNESIUM

Dichlorodiethoxysilane was treated with isoprene in the presence of magnesium in THF. It was found that new silacyclopentene derivatives i.e., 1,1-diethoxy-3-methyl-1-silacyclopentene-3(1), and 2,7-dimethyl-5-silaspiro[4.4]nonadiene-2,7(2), were produced in good yields, while sodium was used instead of magnesium in the reaction 2 was obtained in a low yield.