These reagents are obtained by the reaction of
haloalkanes with magnesium metal in dry ether A chemical reaction is the result of competition; it is a race that is won by the fastest
runner A collection of molecules tend to do, by and large, what is easiest for them An
alkyl halide with b-hydrogen atoms when reacted with a base or a nucleophile has two
competing routes: substitution (SN1 and SN2) and elimination