A method is provided for producing a specific crosscoupling compound and a specific catalyst for producing the compound. The method includes reacting in the presence of a base and a nickel compound catalyst organic halide of the formula n'(R.sup.1X.sup.1.sub.n), wherein R.sup.1 is a hydrocarbon group and the .alpha. and .beta. carbons to X' are sp.sup.3 carbon atoms; X.sup.1 is a chlorine, bromine, or iodine atoms, and n and n.sup.1 and 1 or 2 but not both 2, with a compound having the formula m{R.sup.2(BX.sup.2.sub.2).sub.n'} where an R.sup.2 is an aryl, heteroaryl, or alkenyl group, and n' is 1 or 2, X.sub.2 is independently a hydroxyl group, an alkoxy or arylalkoxy group or X.sup.2.sub.2 together form an alkylenedioxy or arylenedioxy group, and m represents 1 or 2 but m.ltoreq.n, and the boron atom is bonded to a sp.sup.2 carbon atom of R.sup.2 group or a boronic acid trimer anhydride.