'7"'in the presence of excess ethylene glycol. This product was also prepared by esterifying the boronic anhydride (111) with ethylene glycol. Corresponding products were obtained by running the carbonylation reaction in 1, 3-propanediol, 1, 4-butanediol, 2, 3-butanediol, 1, 3- butanediol or l, 5-pentanediol. The product from the latter reaction partially polymerized on distillation. The product from the reaction of 1, B-hesanediol had the appearance and ...