Our studies of the reaction of isoprene with alkyl- magnesium halides in the presence of transition metal complexes [1, 2] showed that the major reaction path- way is hydromagnesiation of the diene with formation of linear products containing both dimeric 3,7-dimeth- yl-2,7-octadienylmagnesium halide and monomeric 2- and 3-methyl-2-butenylmagnesium halides. At the same time, telomeric products were also detected. They formed in smaller amounts, and their relative content ...
