中文名称 | 英文名称 | CAS号 | 化学式 | 分子量 |
---|---|---|---|---|
2-氯-4,7-二甲基苯并噻唑 | 2-chloro-4,7-dimethylbenzothiazole | 80945-84-2 | C9H8ClNS | 197.688 |
Quinazoline derivatives, substituted in the 2-position by the residue of a cyclic (especially heterocyclic) amino compound of aromatic character (particularly an aminothiazole compound) and in the 4-position by the residue of an amino compound of aliphatic character (the aliphatic chain of which may be interrupted by a hetero atom such as oxygen or sulphur) containing a further strongly basic group (e.g. a dialkylamino, piperidino or morpholino group), are manufactured by heating a 2 : 4-dihalogenquinazoline (which may contain further substituents) with the two amines simultaneously, advantageously in the presence of a diluent (e.g. water, alcohol, dioxane or nitrobenzene), if desired under pressure. Examples describe the reaction of 2 : 4-dichloroquinazoline with b -diethylaminoethylamine and simultaneously with: (1) 2-amino-4-phenylthiazole; (2) and (3) p-chloraniline. Lists are given of further products, involving the following additional reactants: 2 : 4 : 6-trichloroquinazoline; 2-aminobenzthiazole and its 6-methyl, chloro, methoxy, nitro, cyano, n-butoxy, acetylamino, methylsulphonyl, benzyl, sulphonamido and phenoxy derivatives, 2-amino-4-methyl- and -4 : 7- and -4 : 6-dimethyl-benzthiazole, 2-aminothiazole, 2-aminobenzimidazole and its 6-methyl derivative, 2 - amino - 6 : 7 - benzobenzthiazole, 2 - amino - 4 - (p - tolyl) - and - 4 - (p - bromophenyl) - thiazole, 2 - amino - 4 : 5 - diphenylthiazole, p - toluidine, p - anisidine, and b - naphthylamine; g -diethylaminopropylamine, b -piperidinoethylamine, 1 - diethylamino - 3 - butylamine, and b - (b 1 - diethylaminoethylthio)-ethylamine.