| abstract |
There are disclosed a composition comprising (E)-1,4-dibromo-2-methyl-2-butene and (Z)-1,4-dibromo-2-methyl-2-butene, wherein the ratio of the E isomer to the total amount of the E and Z isomers is 0.9 or more; a process for producing the same and a process using the same to produce an allyl halide compound of formula (1): <CHEM> wherein X denotes a bromine atom, Y denotes an ArS(O)2 group or an RCOO group, wherein Ar denotes an aryl group which may be substituted and R denotes a hydrogen atom, a lower alkyl group or an aryl group which may be substituted, and the wavy line means that the derivative is a mixture of an E or Z geometrical isomer. |