IPC 6 English version C07C !A-C07C 5/56

C07C-C07C00556

SECTION C– CHEMISTRY; METALLURGY

C 07

ORGANIC CHEMISTRY (such compounds as the oxides, sulfides, or oxysulfides of carbon, cyanogen, phosgene, hydrocyanic acid or salts thereof C 01; products obtained from layered base-exchange silicates by ion-exchange with organic compounds such as ammonium, phosphonium or sulfonium compounds or by intercalation of organic compounds C 01 B 33/44; macromolecular compounds C 08; dyes C 09; fermentation products C 12; fermentation or enzyme-using processes to synthesise a desired chemical compound or composition or to separate optical isomers from a racemic mixture C 12 P; production of organic compounds by electrolysis or electrophoresis C 25 B 3/00, C 25 B 7/00) [2]

C 07 C

ACYCLIC OR CARBOCYCLIC COMPOUNDS

Notes

(1)

In this subclass, the following terms or expressions are used with the meanings indicated:

–

"bridged" means the presence of at least one fusion other than ortho, peri or spiro;

–

two rings are "condensed" if they share at least one ring member, i.e. "spiro" and "bridged" are considered as condensed;

–

"condensed ring system" is a ring system in which all rings are condensed among themselves;

–

"number of rings" in a condensed ring system equals the number of scissions necessary to convert the ring system into one acyclic chain;

–

"quinones" are compounds derived from compounds containing a six-membered aromatic ring or a system comprising six-membered aromatic rings (which system may be condensed or not condensed) by replacing two or four

CH groups of the six-membered aromatic rings by

C=O groups, and by removing one or two carbon-to-carbon double bonds, respectively, and rearranging the remaining carbon-to-carbon double bonds to give a ring or ring system with alternating double bonds, including the carbon-to-oxygen bonds; this means that acenaphthenequinone or camphorquinone are not considered as quinones. [5]

(2)

In this subclass, in the absence of an indication to the contrary, a process is classified in the last appropriate place. [3]

(3)

In this subclass, in the absence of an indication to the contrary, "quaternary ammonium compounds" are classified with the corresponding "non-quaternised nitrogen compounds". [5]

(4)

For the classification of compounds in groups C 07 C 1/00 to C 07 C 71/00 and C 07 C 401/00 to C 07 C 409/00 :

–

a compound is classified considering the molecule as a whole (rule of the "whole molecule approach");

–

a compound is considered to be saturated if it does not contain carbon atoms bound to each other by multiple bonds;

–

a compound is considered to be unsaturated if it contains carbon atoms bound to each other by multiple bonds, which includes a six-membered aromatic ring,

unless otherwise specified or implicitely derivable from the subdivision, as in group C 07 C 69/00, e.g. C 07 C 69/712. [5]

(5)

For the classification of compounds in groups C 07 C 201/00 to C 07 C 395/00, i.e. after the functional group has been determined according to the "last place rule", a compound is classified according to the following principles:

–

compounds are classified in accordance with the nature of the carbon atom to which the functional group is attached;

–

a carbon skeleton is a carbon atom, other than a carbon atom of a carboxyl group, or a chain of carbon atoms bound to each other; a carbon skeleton is considered to be terminated by every bond to an element other than carbon or to a carbon atom of a carboxyl group;

–

when the molecule contains several functional groups, only functional groups linked to the same carbon skeleton as the one first determined are considered;

–

a carbon skeleton is considered to be saturated if it does not contain carbon atoms bound to each other by multiple bonds;

–

a carbon skeleton is considered to be unsaturated if it contains carbon atoms bound to each other by multiple bonds, which includes a six-membered aromatic ring. [5]

(6)

In this subclass, it is desirable to add the indexing codes of subclass C 07 M. The indexing codes should be unlinked. [6]

Hydrocarbons (derivatives of cyclohexane or of a cyclohexene, having a side-chain containing an acyclic unsaturated part of at least four carbon atoms, this part being directly attached to the cyclohexane or cyclohexene rings C 07 C 403/00; preparation of macromolecular compounds C 08; production or separation from undefined hydrocarbon mixtures such as petroleum oil C 10 G; natural gas, synthetic natural gas, liquefied petroleum gas C 10 L 3/00; electrolytic or electrophoretic processes C 25 B) [3]

Preparation of hydrocarbons from one or more compounds, none of them being a hydrocarbon

from oxides of carbon (preparation of liquid hydrocarbon mixtures of undefined composition C 10 G 2/00; of synthetic natural gas C 10 L 3/06) [5]

from carbon monoxide with hydrogen

in the presence of organic compounds, e.g. hydrocarbons

Isosyntheses

from carbon monoxide with water vapour

from carbon dioxide with hydrogen

starting from organic compounds containing only oxygen atoms as hetero atoms

207

from carbonyl compounds [5]

213

by splitting of esters [5]

by reduction

by elimination of water

247

by splitting of cyclic ethers [3]

starting from organic compounds containing only halogen atoms as hetero atoms

by ring closure

by splitting-off the elements of hydrogen halide from a single molecule

starting from compounds containing hetero atoms other than, or in addition to, oxygen or halogen [3]

reacting phosphines with aldehydes or ketones, e.g. Wittig reaction [3]

by splitting of esters (C 07 C 1/213, C 07 C 1/30 take precedence) [3,5]

Preparation of hydrocarbons from hydrocarbons containing a smaller number of carbon atoms (redistribution reactions involving splitting C 07 C 6/00) [3]

by addition between unsaturated hydrocarbons [3]

by oligomerisation of well-defined unsaturated hydrocarbons without ring formation [3]

of alkenes, i.e. acyclic hydrocarbons having only one carbon-to-carbon double bond [3]

Catalytic processes [3]

with metal oxides [3]

with crystalline alumino-silicates, e.g. molecular sieves [3]

with inorganic acids; with salts or anhydrides of acids [3]

Acids of sulfur; Salts thereof; Sulfur oxides [3]

Acids of phosphorus; Salts thereof; Phosphorus oxides [3]

Acids of halogen; Salts thereof [3]

Metal halides; Complexes thereof with organic compounds [3]

with metals [3]

with hydrides or organic compounds (C 07 C 2/22 takes precedence) [3]

with ion-exchange resins [3]

containing a metal-to-carbon bond; Metal hydrides [3]

as complexes, e.g. acetyl-acetonates [3]

Metal-hydrocarbon complexes [3]

as phosphines, arsines, stilbines or bismuthines [3]

of dienes or alkynes [3]

of conjugated dienes [3]

homo- or co-oligomerisation with ring formation, not being a Diels-Alder conversion [3]

of conjugated dienes only [3]

Catalytic processes [3]

of only hydrocarbons containing a carbon-to-carbon triple bond [3]

Diels-Alder conversion [3]

Catalytic processes [3]

by addition of unsaturated hydrocarbons to saturated hydrocarbons, or to hydrocarbons containing a six-membered aromatic ring with no unsaturation outside the aromatic ring [3]

Addition to acyclic hydrocarbons [3]

Catalytic processes [3]

with halides [3]

with acids [3]

Addition to a carbon atom of a six-membered aromatic ring [3]

Catalytic processes [3]

with halides [3]

with acids [3]

Addition to a non-aromatic carbon atom of hydrocarbons containing a six-membered aromatic ring [3]

by addition with simultaneous hydrogenation [3]

by condensation of hydrocarbons with partial elimination of hydrogen [3]

Processes with partial combustion [3]

Processes with the aid of electrical means [3]

oxidative coupling [3]

catalytic [3]

by condensation between a hydrocarbon and a non-hydrocarbon [3]

Growth and elimination reactions (preparation of metallo-organic compounds C 07 F) [3]

Preparation of hydrocarbons from hydrocarbons containing a larger number of carbon atoms (redistribution reactions involving splitting C 07 C 6/00; cracking hydrocarbon oils C 10 G) [3]

by cracking a single hydrocarbon or a mixture of individually defined hydrocarbons or a normally gaseous hydrocarbon fraction [3]

Thermal processes [3]

Catalytic processes [3]

by splitting-off an aliphatic or cycloaliphatic part from the molecule [3]

from acyclic hydrocarbons [3]

from hydrocarbons containing a six-membered aromatic ring, e.g. propyltoluene to vinyltoluene [3]

splitting taking place at an aromatic-aliphatic bond [3]

Thermal processes [3]

Catalytic processes [3]

Hydrogen being formed in situ, e.g. from steam [3]

by depolymerisation to the original monomer, e.g. dicyclopentadiene to cyclopentadiene [3]

by splitting polyarylsubstituted aliphatic compounds at an aliphatic-aliphatic bond, e.g. 1,4-diphenylbutane to styrene [3]

by splitting polyaryl compounds at a bond between uncondensed six-membered aromatic rings, e.g. biphenyl to benzene [3]

Preparation of hydrocarbons from hydrocarbons containing the same number of carbon atoms

by hydrogenation (simultaneous hydrogenation and dehydrogenation C 07 C 5/52)

of non-aromatic carbon-to-carbon double bonds [3]

Partial hydrogenation [3]

of carbon-to-carbon triple bonds

to carbon-to-carbon double bonds [3]

of aromatic six-membered rings

Partial hydrogenation [3]

with simultaneous isomerisation [3]

by isomerisation (with simultaneous hydrogenation C 07 C 5/13; with simultaneous dehydrogenation C 07 C 5/373)

Rearrangement of carbon-to-carbon unsaturated bonds [3]

Migration of carbon-to-carbon double bonds [3]

Rearrangement of carbon atoms in the hydrocarbon skeleton [3]

changing the number of carbon atoms in a ring while maintaining the number of rings [3]

changing the number of rings [3]

by dehydrogenation with formation of free hydrogen [2]

327

Formation of non-aromatic carbon-to-carbon double bonds only [3]

333

Catalytic processes [3]

Formation of carbon-to-carbon triple bonds only [3]

367

Formation of an aromatic six-membered ring from an existing six-membered ring, e.g. dehydrogenation of ethylcyclohexane to ethylbenzene [3]

373

with simultaneous isomerisation [3]

387

of cyclic compounds containing no six-membered ring to compounds containing a six-membered aromatic ring [3]

393

with cyclisation to an aromatic six-membered ring, e.g. dehydrogenation of n-hexane to benzene [3]

Catalytic processes [3]

by dehydrogenation with a hydrogen acceptor [2]

Notes

(1)

In this group:

–

the catalyst is considered as forming part of the acceptor system in case of simultaneous catalyst reduction; [3]

–

compounds added for binding the reduced acceptor system are not considered as belonging to the acceptor system. [3]

(2)

The acceptor system is classified according to the supplying substances in case of in situ formation of the acceptor system or of in situ regeneration of the reduced acceptor system. [3]

with a halogen or a halogen-containing compound as an acceptor [2]

with sulfur or a sulfur-containing compound as an acceptor [2]

with oxygen as an acceptor [2]

with an organic compound as an acceptor [2]

with a hydrocarbon as an acceptor, e.g. hydrocarbon disproportionation, i.e. 2 C_nH_p

C_nH_p+q + C_nH_p-q [2]

with an acceptor system containing at least two compounds provided for in more than one of groups C 07 C 5/44 to C 07 C 5/50 [3]

containing only oxygen and either halogens or halogen-containing compounds [3]

C07C 6/00 - C07C 13/72