Butenyl Grignard reagent was prepared according to the procedure of Young, Prater, and Winsteins from 1.5 moles of magnesium turnings and 0.5 mole of crotyl bromide." There waa used a total of 1 1. of anhydrous ether, and the bromide was added during about 4 hr. Titration" of the solution of Grignard reagent indicated yields, in several runs, between 70 and 80%. In one run, the solution of Grignard reagent was concentrated by distillation of ...
