The Hydrobromide A' acid results on boiling the A 2 acid on reduction with alkalis, or on eliminating hydroHEXAHYDRO bromic acid from i-brom-cyclo-hexane carboxylic acid-I.
Cyclo-heptanone (suberone), C 7 H 12 O, is formed on the distillation of suberic acid with lime, and from a-brom-cyclo-heptane carboxylic acid by treatment with baryta and subsequent distillation over lead peroxide (R.
Cyclo-heptane carboxylic acid (suberanic acid), C7H13C02H, is obtained by the reduction of cyclo-heptene-I-carboxylic acid; from brom-cyclo-heptane by the Grignard reaction; and by the reduction of hydrotropilidine carboxylic acid by sodium in alcoholic solution (R.
Para-xylene is obtained when camphor is distilled with zinc chloride, but it is best prepared from para-brom-toluene or dibrombenzene, methyl iodide and sodium.
Lbwig (1803-1890) in Das Brom and seine chemischen Verhaltnisse (1829).