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Alkali A 2'e DIHYDRO < Hydrobromide with ll alcoholic potash A 2.4 DIHYDRO I Anhydride with acetic anhydride Sodium amalgam ± acetic acid ( A3.5 DIHYDRO (TRANS.) {\/` Acetic anhydride 43.5 DIHYDRO (CIS.) A 1.4 D11:MR0 Sodium amalgam See also:

BOIL

Boil with See also:

WATER

water suberyl bromide. Cyclo-heptene, C7H12, is obtained by the See also:

ACTION

action of alcoholic potash on suberyl iodide; and from cyclo-heptane carboxylic acid, the See also:

AMIDE

amide of which by the action of sodium hypobromite is converted into cyclo-heptanamine, which, in its turn, is destructively methylated (R. Willstatter, Ber., 1901, 34, 131). Cyclo-heptadiene 1.3, C7H15, is obtained from cyclo-heptene (Willstatter, loc. cit.). It is identical with the hydrotropilidine, which results by the destructive methylation of tropane. Euterpene (trimethyl-I.4.4-cyclo-heptadiene I.5), C10Ha5 is prepared from dihydroeucarveol. By the action of hydrobromic acid (in glacial acetic acid See also:

SOLUTION (from Lat. solvere, to loosen, dissolve)

solution) and reduction of the resulting product it yields 1.2-dimethyl-4-ethylbenzene (A. v. See also:

BAEYER, JOHANN FRIEDRICH WILHELM ADOLF VON (1835– )

Baeyer, Ber., 1897, 30, p. 2075). Cyclo-heptatriene (tropilidine), C,H8, is formed on distilling See also:

TROPINE, C8H15NO

tropine with baryta; and from cyclo-heptadiene by forming its addition product with See also:

BROMINE (symbol Br, atomic weight 79-96)

bromine and See also:

HEATING

heating this with See also:

QUINOLINE (Benzopyridine), C9H7N

quinoline to 150—16o° C. (R. Willstatter, loc. cit.).

Chromic acid oxidizes it to benzoic acid and See also:

BENZALDEHYDE (oil of bitter almonds), C6H5CHO

benzaldehyde. With bromine it forms a di-bromide, which then heated to i io° C. decomposes into hydro-bromic acid and benzyl bromide. Cyclo-keptanol, CIH130H, is formed by the reduction of suberone, and by the action of See also:

SILVER

silver nitrite on the hydrochloride of cyclohexanamine (N. I)emjanow, Centralblatt, 1904, i. p. 1214). Cyclo-heptanone (suberone), C,H,20, is formed on the See also:

DISTILLATION (from the Lat. distillare, more correctly destillare, to drop or trickle down)

distillation of suberic acid with See also:

lime, and from a-brom-cyclo-heptane carboxylic acid by treatment with baryta and subsequent distillation over See also:

lead peroxide (R. Willstatter, Ber.. 1898, 31, p. 2507). It is a colourless liquid having a See also:

PEPPERMINT

peppermint odour, and boiling at 178.5–179.5° C. Nitric acid oxidizes it to n-pimelic acid. ( See also:

A2(z)

A2.5 DmvDRo Boil with water A1.5 DIHYDRO I Sodium amalgam Boil + NaOH A2 TETRAAIIYDRO A 1 TETRAHYDRO Dibromide on Hydrobromide Reduce alcoholic potash on reduction Remove H Br from A 1'3 DIHYDRO dibromide Cyclo-heptane See also:

GROUP

Group.

Cyclo-heptane (suberane), C7H14, obtained by the reduction of suberyl iodide, is a liquid which boils at 117° C. On treatment with bromine in the presence of See also:

ALUMINIUM (symbol Al; atomic weight 27.0)

aluminium bromide it gives chiefly pentabromtoluene. When heated with hydriodic acid to 230 C. it gives methylhexamethylene. On oxidation with nitric acid (sp. gr. 1.4) it yields pimelic acid.

End of Article: PHTHALIC

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