GB220302A - Manufacture of new intermediate products - Google Patents

Abstract

p-Oxynaphthyl-1 : 3 : 5-triazine derivatives are produced by the action of a -naphthol upon a cyanuric halide having at least one replaceable halogen atom, in presence of a condensing agent such as aluminium chloride and in some cases with addition of a diluent such as carbon bisulphide, petroleum ether, tetrachlorethane or nitrobenzene. The cyanuric halide reacts with as many molecules of a -naphthol as it contains replaceable halogen atoms; the products have the general formula:- <FORM:0220302/2/1> where A and B are either further a -naphthol residues or any inorganic, aliphatic, or aromatic residues. The following examples are given:-(1) a mixture of cyanuric chloride and aluminium chloride is added to molten a -naphthol; the solid product forms an addition product with hydrochloric acid when boiled with a solution of that acid; it dissolves in caustic soda from which solution the 2 : 4 : 6-tri-p-oxynaphthyl-1 : 3 : 5-triazine, free from hydrochloric acid, is precipitated by a weak acid such as acetic acid or sodium bisulphite: (2) the same compound is prepared in presence of tetrachlorethane: (3) 2-phenylamino-4 : 6-di-p-oxynaphthyl-1 : 3 : 5-triazine is obtained from a -naphthol, aluminium chloride and the condensation product from equal molecules of cyanuric chloride and aniline: (4) 2 : 4-diamino-6-p-oxynaphthyl-1 : 3 : 5-triazine is prepared from chlorocyanuric diamide and a -naphthol, and 2 : 4-diphenylamino-6 - p-oxynaphthyl-1 : 3 : 5-triazine from a -naphthol and the condensation product from one molecular proportion of cyanuric chloride and two of aniline.