| 摘要 |
PURPOSE:To efficiently and readily obtain the titled compound containing a novel compound in a short time by simple purifying and separating operation without requiring a special apparatus, by reacting an specific aniline compound with another compound. CONSTITUTION:An aniline derivative expressed by formula I [R1 and R2 are H, (substituted) saturated and unsaturated alkyl, (substituted) cycloalkyl and aralkyl or (substituted) aryl or R1 and R2 together may form a heterocyclic ring; R3-R6 are H, halogen, (substituted) alkyl and hydroxyl or (substituted) amino] is reacted with a compound expressed by formula II [R is (substituted) benzene ring and naphthalene ring or (substituted) heterocyclic ring], as necessary, in the presence of a dehydration condensing agent, e.g. concentrated sulfuric acid, etc., in an inert solvent at 30-200 deg.C to afford the aimed compound, expressed by formula III and containing a novel compound expressed by formula IV (R7-R11 are same as R1 and R2 except formation of the heterocyclic ring, amino or acylamino). USE:A raw material for diarylethylene derivatives which are intermediates for pressure-sensitive recording paper, etc. |
