Heterocyclic compounds containing 1,3,5-triazine rings

CCHEMISTRY METALLURGY C07Organic chemistry C07DHETEROCYCLIC COMPOUNDS

C07D251/00Heterocyclic compounds containing 1,3,5-triazine rings

C07D251/02not condensed with other rings C07D251/04having no double bonds between ring members or between ring members and non-ring members C07D251/06with hetero atoms directly attached to ring nitrogen atoms C07D251/08having one double bond between ring members or between a ring member and a non-ring member C07D251/10having two double bonds between ring members or between ring members and non-ring members C07D251/12having three double bonds between ring members or between ring members and non-ring members C07D251/14with hydrogen or carbon atoms directly attached to at least one ring carbon atom C07D251/16to only one ring carbon atom C07D251/18with nitrogen atoms directly attached to the two other ring carbon atoms C07D251/20with no nitrogen atoms directly attached to a ring carbon atom C07D251/22to two ring carbon atoms C07D251/24to three ring carbon atoms C07D251/26with only hetero atoms directly attached to ring carbon atoms C07D251/28Only halogen atoms C07D251/30Only oxygen atoms C07D251/32Cyanuric acid Isocyanuric acid C07D251/34Cyanuric or isocyanuric esters C07D251/36having halogen atoms directly attached to ring nitrogen atoms C07D251/38Sulfur atoms C07D251/40Nitrogen atoms C07D251/42One nitrogen atom C07D251/44with halogen atoms attached to the two other ring carbon atoms C07D251/46with oxygen or sulfur atoms attached to the two other ring carbon atoms C07D251/48Two nitrogen atoms C07D251/50with a halogen atom attached to the third ring carbon atom C07D251/52with an oxygen or sulfur atom attached to the third ring carbon atom C07D251/54Three nitrogen atoms C07D251/56Preparation of melamine C07D251/58from cyanamide, dicyanamide or calcium cyanamide C07D251/60from urea or from carbon dioxide and ammonia C07D251/62Purification of melamine C07D251/64Condensation products of melamine with aldehydes Derivatives thereof C07D251/66Derivatives of melamine in which a hetero atom is directly attached to a nitrogen atom of melamine C07D251/68Triazinylamino stilbenes C07D251/70Other substituted melamines C07D251/72condensed with carbocyclic rings or ring systems