The nuclear synthesis of unsaturated hydrocarbons previously described3 has been extended to the synthesis of 1, 4-diolefins. This extension has been made possible through the preparation of allylmagnesium bromide by the method described by Gilman and McGl~ mphy.~ The addition of an cr, fl-dibromoalkyl ethyl ether to a slight excess of allylmagnesium bromide in ether solution leads to the formation of an a-allyl-b-bromoalkyl ethyl ether. It ...
