-6 alkoxy, maleimide, propargyl ether, glycidyl ether, and phenyl and at least one R is propargyl ether; and A is a divalent linking moiety, and (ii) less than an equivalent amount, based on phenolic hydroxyl groups, of a propargyl halide in a basic reaction medium under conditions effective to produce a phenolic product having propargyl ether substituents; (b) reacting, at a temperature within th