Cyclic C6, C8, and C12 synthesis components

1,5-Cyclooctadiene (COD)

The doubly unsaturated cyclic hydrocarbon 1,5-cyclooctadiene (COD) is a colorless liquid with a pungent odor and a boiling point of 151°C.

COD is formed by the dimerization of butadiene.

COD is an important starting material for synthesis of cyclic C8 compounds. By the use of appropriate reaction engineering, chemical reactions can be carried out selectively at one or both of the double bonds.

• Thus selective hydrogenation can be used to produce cyclooctene, the monomer of polyoctenamer (VESTENAMER^®).
• Bromination produces an effective flame retardant for plastics.
• COD also serves in the fragrance industry for production of carriers.
  Cycloocten (COE)

Cyclooctene (COE)

The singly unsaturated cyclic hydrocarbon cyclooctene (COE) is a colorless liquid with a boiling point of 145°C.

COE is formed by selective hydrogenation of cyclooctadiene.

• We produce COE mainly for the manufacture of polyoctenamer (VESTENAMER^®) by ring-opening polymerization.
• Ozonolysis of COE yields suberic acid.
• Various perfumes are obtained via a number of intermediate stages.
• Thermolysis of COE yields the Evonik product 1,7-octadiene, which is also used industrially. 

Cyclooctan (COAN)

The saturated cyclic hydrocarbon cyclooctane (COAN) is a colorless liquid with a boiling point of 151°C and a freezing point of 12°C.

COAN is formed by catalytic hydrogenation of 1,5-cyclooctadiene, which is easily obtained by the dimerization of butadiene.

COAN is very easily soluble in apolar substances. It can be used as a solvent whenever the special chemical inertness of saturated cyclic hydrocarbons is required.

Ethylcyclohexane (ECH)

The fully saturated hydrocarbon ethylcyclohexane (ECH) is distinguished by an unusual property: with a freezing point of -111°C and a boiling point of 131°C, it has an extraordinarily long liquid range of 242 K.

ECH is formed by catalytic hydrogenation of 4-vinylcyclohexene, a dimerization product of butadiene. We supply ECH of average purity 85%, the other component present being ethylbenzene.

Thanks to its saturated character, ECH is an outstanding solvent for apolar substances.

Vinylcyclohexene (VCH)

The doubly unsaturated cyclic hydrocarbon 4-vinylcyclohexene (VCH) is a colorless liquid with a boiling point of 126°C and a pungent odor.

VCH is formed by dimerization of butadiene.

• VCH is a precursor in the production of flame retardants.
• It is hydrogenated to ethylcyclohexane, a solvent for apolar substances.
• It also serves as an intermediate in the synthesis of specialty chemicals. 

1,4-Dimethyl-4-vinyl-1-cyclohexene (DMVCH) und 1,5,10-Trimethyl-Cyclododecatriene (TMCDT)

We offer the diterpene 1,4-dimethyl-4-vinyl-1-cyclohexene (DMVCH) as pure substance. It is a fruity-smelling liquid with a boiling point of 70°C (44 hPa).

Sesquiterpene 1,5,10-trimethyl cyclododecatriene (TMCDT) is a triply methylated derivative of the C12 ring cyclododecatriene. At room temperature, TMCDT is a colorless liquid with a characteristic odor similar to that of terpene and with a boiling point of 263,5°C.

Both compounds are terpenes, a class of compounds that offers many ways to produce synthetic derivatives. They are suitable starting materials for the synthesis of various flavor chemicals in the fragrance industry, for example.