C
SECTION C — CHEMISTRY; METALLURGY
 C

Note(s)

In section C, the definitions of groups of chemical elements are as follows:

  • Alkali metals: Li, Na, K, Rb, Cs, Fr
  • Alkaline earth metals: Ca, Sr, Ba, Ra
  • Lanthanides: elements with atomic numbers 57 to 71 inclusive
  • Rare earths: Sc, Y, Lanthanides
  • Actinides: elements with atomic numbers 89 to 103 inclusive
  • Refractory metals: Ti, V, Cr, Zr, Nb, Mo, Hf, Ta, W
  • Halogens: F, Cl, Br, I, At
  • Noble gases: He, Ne, Ar, Kr, Xe, Rn
  • Platinum group: Os, Ir, Pt, Ru, Rh, Pd
  • Noble metals: Ag, Au, Platinum group
  • Light metals: alkali metals, alkaline earth metals, Be, Al, Mg
  • Heavy metals: metals other than light metals
  • Iron group: Fe, Co, Ni
  • Non-metals: H, B, C, Si, N, P, O, S, Se, Te, noble gases, halogens
  • Metals: elements other than non-metals
  • Transition elements: elements with atomic numbers 21 to 30 inclusive, 39 to 48 inclusive, 57 to 80 inclusive, 89 upwards

  
CHEMISTRY
 C07
ORGANIC CHEMISTRY (such compounds as the oxides, sulphides, or oxysulphides of carbon, cyanogen, phosgene, hydrocyanic acid or salts thereof C01; macromolecular compounds C08; dyes C09; fermentation products C12; fermentation or enzyme-using processes to synthesise a desired chemical compound or composition or to separate optical isomers from a racemic mixture C12P; production of organic compounds by electrolysis or electrophoresis C25B 3/00, C25B 7/00)  [2]
 C07

Note(s)

  1. In this class, the following term is used with the meaning indicated: [4]
    • "preparation" covers purification, separation, stabilisation or use of additives, unless a separate place is provided therefor. [4]
  2. In this class, in the absence of an indication to the contrary, and with the exception referred to below, a compound is classified in the last appropriate place, e.g. a compound containing an acyclic chain and a heterocyclic ring is classified only as a heterocyclic compound, and a steroid is classified only as a cyclopentanophenanthrene compound. In general, and in the absence of an indication to the contrary (such as groups C07C 59/58, C07C 59/70), the terms "acyclic" and "aliphatic" are used to describe compounds in which there is no ring; and, if a ring were present, the compound would be taken by the "last place" rule to a later group for cycloaliphatic or aromatic compounds, if such a group exists. Where a compound or an entire group of compounds exists in tautomeric forms, it is classified as though existing in the form which is classified last in the system, unless the other form is specifically mentioned earlier in the system.
  3. Inventions dealing with chemical compounds and their preparation are classified in the groups for the type of compound prepared. The processes of preparation should also be classified in the groups for the types of reaction employed when such groups exist. General processes for the preparation of a class of compounds falling into more than one main group are classified in the groups for the processes employed, when such groups exist. The compounds prepared may also be classified in the groups for the types of compound prepared.
  4. Anhydrides and halides of carboxylic acids are classified as the relevant acids unless otherwise indicated. Salts of a compound, unless specifically provided for, are classified as that compound, e.g. aniline hydrochloride is classified as containing carbon, hydrogen and nitrogen only (in C07C 87/52), sodium malonate is classified as malonic acid (in C07C 55/08), and a mercaptide is classified as the mercaptan. Metal chelates are dealt with in the same way. Similarly, metal alcoholates and metal phenates are classified in subclass C07C and not in subclass C07F, the alcoholates in C07C 31/28-C07C 31/32 and the phenates as the corresponding phenols in C07C 39/235 or C07C 39/44. Salts or adducts formed between two or more organic compounds are classified according to all compounds forming the salts or adducts. [2]
 C07B
GENERAL METHODS OF ORGANIC CHEMISTRY; APPARATUS THEREFOR (preparation of carboxylic acid esters by telomerisation C07C 67/47; telomerisation C08F)
 C07B

Note(s)

  1. In this subclass, the functional group which is present already in some residue being introduced and is not substantially involved in a chemical reaction, is not considered as the functional group which is formed or introduced as a result of the chemical reaction. [4]
  2. In this subclass, the following term is used with the meaning indicated: [4]
    • "separation" means separation only for the purposes of recovering organic compounds. [4]
  3. In this subclass, in the absence of an indication to the contrary, an invention is classified in the last appropriate place according to the type of reaction employed, noting the bond or the functional group which is formed or introduced as a result of the chemical reaction. [4]
 C07B 1/00
( transferred to C07B 31/00, C07B 35/00,C07B 41/00-C07B 47/00 )
 C07B 3/00
( transferred to C07B 33/00, C07B 35/00,C07B 41/00-C07B 47/00 )
 C07B 5/00
( transferred to C07B 35/00, C07B 37/00,C07B 41/00-C07B 47/00, C07B 51/00 )
 C07B 7/00
( transferred to C07B 41/00, C07B 43/00, C07B 45/00 )
 C07B 9/00
( transferred to C07B 39/00 )
 C07B 11/00
( transferred to C07B 43/02 )
 C07B 13/00
( transferred to C07B 45/02 )
 C07B 15/00
( transferred to C07B 37/12 )
 C07B 17/00
( transferred to C07B 49/00 )
 C07B 19/00
( transferred to C07B 57/00, C12P 41/00 )
 C07B 19/02
( transferred to C12P 41/00 )
 C07B 20/00
( transferred to C07B 55/00 )
 C07B 21/00
( transferred to C07B 63/02 )
 C07B 23/00
( transferred to C07B 59/00 )
 C07B 25/00
( transferred to C07B 37/06 )
 C07B 27/00
( transferred to C07B 37/00 )
 C07B 29/00
( transferred to C07B 35/00-C07B 63/00 )
 C07B 29/04
( transferred to C07B 61/02 )
 C07B 31/00
Reduction in general  [4]
 C07B 33/00
Oxidation in general  [4]
 C07B 35/00 - 
C07B 37/00
Reactions without formation or introduction of functional groups containing hetero atoms  [4]
 C07B 35/00
Reactions without formation or introduction of functional groups containing hetero atoms, involving a change in the type of bonding between two carbon atoms already directly linked  [4]
 C07B 35/02
·  Reduction  [4]
 C07B 35/04
·  Dehydrogenation  [4]
 C07B 35/06
·  Decomposition, e.g. elimination of halogens, water or hydrogen halides  [4]
 C07B 35/08
·  Isomerisation  [4]
 C07B 37/00
Reactions without formation or introduction of functional groups containing hetero atoms, involving either the formation of a carbon-to-carbon bond between two carbon atoms not directly linked already or the disconnection of two directly linked carbon atoms  [4]
 C07B 37/02
·  Addition  [4]
 C07B 37/04
·  Substitution  [4]
 C07B 37/06
·  Decomposition, e.g. elimination of carbon dioxide  [4]
 C07B 37/08
·  Isomerisation  [4]
 C07B 37/10
·  Cyclisation  [4]
 C07B 37/12
·  ·  Diels-Alder reactions  [4]
 C07B 39/00 - 
C07B 63/00
Reactions with formation or introduction of functional groups containing hetero atoms  [4]
 C07B 39/00
Halogenation  [4]
 C07B 41/00
Formation or introduction of functional groups containing oxygen  [4]
 C07B 41/02
·  of hydroxy or O-metal groups  [4]
 C07B 41/04
·  of ether, acetal or ketal groups  [4]
 C07B 41/06
·  of carbonyl groups  [4]
 C07B 41/08
·  of carboxyl groups or salts, halides or anhydrides thereof  [4]
 C07B 41/10
·  ·  Salts, halides or anhydrides of carboxyl groups  [4]
 C07B 41/12
·  of carboxylic acid ester groups  [4]
 C07B 41/14
·  of peroxy or hydroperoxy groups  [4]
 C07B 43/00
Formation or introduction of functional groups containing nitrogen  [4]
 C07B 43/02
·  of nitro or nitroso groups  [4]
 C07B 43/04
·  of amino groups  [4]
 C07B 43/06
·  of amide groups  [4]
 C07B 43/08
·  of cyano groups  [4]
 C07B 43/10
·  of isocyanate groups  [4]
 C07B 45/00
Formation or introduction of functional groups containing sulphur  [4]
 C07B 45/02
·  of sulpho or sulphonyldioxy groups  [4]
 C07B 45/04
·  of sulphonyl or sulphinyl groups  [4]
 C07B 45/06
·  of mercapto or sulphide groups  [4]
 C07B 47/00
Formation or introduction of functional groups not provided for in groups C07B 39/00-C07B 45/00  [4]
 C07B 49/00
Grignard reactions  [4]
 C07B 51/00
Introduction of protecting groups or activating groups, not provided for in the preceding groups  [4]
 C07B 53/00
Asymmetric syntheses  [4]
 C07B 55/00
Racemisation; Complete or partial inversion  [4]
 C07B 57/00
Separation of optically-active compounds  [4]
 C07B 59/00
Introduction of isotopes of elements into organic compounds  [4]
 C07B 61/00
Other general methods  [4]
 C07B 61/02
·  Generation of organic free radicals Purification; Separation; Stabilisation  [4]
 C07B 63/00
Purification; Separation (separation of optically-active compounds C07B 57/00); Stabilisation; Use of additives  [4]
 C07B 63/02
·  by treatment giving rise to a chemical modification  [4]
 C07B 63/04
·  Use of additives  [4]