Silane/disilane derivatives reactions

These difficulties and generally low yields in the preparation of organic disilane derivatives by the reaction of disilane hexahalide with organometallic compounds lead to the conclusion that the better method for preparation of these compounds is the Wurtz-type synthesis starting from organohalomono-silane. 

In recent years Furstner [15, 16] described the very rapidly and completely conversion of chloro-silanes into disilanes by the help of potassium-graphite (CgK). These coupling reactions were characterized by low temperatures (0-25 C), short reaction times (5-60 min), and high yields (> 90 %). So we tried to reduce our silyltriflate derivatives with potassium-graphite and we succeeded in preparing... 

Reactions of 1,3-dienes with various disilanes were reported by means of group 10 transition-metal catalyst, giving synthetically useful allylic silane derivatives. Two major pathways, i.e., formation of 1 1 and 1 2 adducts, are known and controlled by the choice of disilanes and catalyst. 

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