METHOD OF PRODUCING DIANES VIA HYDRODIMERISATION Russian patent published in 2011 - IPC C07C2/40 C07C2/74 C07C11/12 B01J23/40 

FIELD: chemistry.

SUBSTANCE: invention relates to a method of producing substituted or unsubstituted 1,7-diolefins of formula (9) in which R₇-R₁₂ independently denote hydrogen, an alkyl with 1-4 carbon atoms or halogen, through hydrodimerisation of non-cyclic olefins with at least two conjugated double bonds in the presence of a reducing agent and a catalyst, characterised by that the reducing agent used is formic acid and/or formate, and the catalyst used is a carbene metal complex which contains group VIII-X metals and at least one carbene ligand of formula (1) or (2): in which R₁ R₂ denote -(CH₂)_n-B, B denotes a monocyclic or polycyclic aryl group with 6-14 carbon atoms or a monocyclic or polycyclic heterocycle with 5-14 carbon atoms and heteroatoms, which contains 1-3 heteroatoms, selected from a group comprising nitrogen, oxygen or sulphur, n is a number ranging from 0 to 4, R₃, R₄, R₅ and R₆ denote hydrogen, alkyl, heteroaryl, aryl, -CN, -COOH, -COO-alkyl, -COO-aryl, -OCO-alkyl, -OCO-aryl, -OCOO-alkyl, -OCOO-aryl, -CHO, -CO-alkyl, -CO-aryl, -NH₂, -NH(alkyl), -N(alkyl)₂, -NH(aryl), -N(aryl)₂, fluoro, chloro, bromo, iodo, -OH, -CF₃, -NO₂, - ferrocenyl, -SO₃H or -PO₃H₂, wherein alkyl denotes an alkyl group with 1-12 carbon atoms, aryl denotes an aryl with 5-14 carbon atoms, and substitutes R₃ and R₄ may also be part an aliphatic or aromatic ring bound by a bridge, where substitutes R₁ and R₂ may be identical or different, substituted or unsubstituted, and substitutes R₃, R₄ R₅ and R₆ may also be identical or different, substituted or unsubstituted.

EFFECT: besides easy handling of the catalyst, the invention is also characterised by high efficiency.

16 cl, 12 tbl, 14 ex