in benzene byproducts: 1,3-butanediol; acylchlorid dropwise addn. to soln. of B-compd., boiling (40 min), 1 d at room temperature, aq. HCl addn.;

in benzene byproducts: 1,3-butanediol; acylchlorid dropwise addn. to soln. of B-compd., boiling (40 min), 1 d at room temperature, aq. HCl addn.;