PROCESS FOR PREPARING QUATERNARY SALTS, NOVEL QUATERNARY SALTS AND PHOTOGRAPHIC EMULSIONS CONTAINING THEM

摘要

1283835 Heterocyclic quaternary salts EASTMAN KODAK CO 23 April 1970 [28 April 1969 (2)] 19547/70 Heading C2C [Also in Division G2] Novel heterocyclic quaternary salts of the formula in which Z represents the atoms required to complete a mono- or poly-nuclear heterocyclic ring system containing a 5- or 6-membered ring including the quaternary nitrogen atom, the atoms being selected from C, N, O, S and Se, n is 0 or 1, m is 0 or 1-4, X is an acid anion, RSP1/SP is hydrogen or an alkyl, aralkyl, aryl or alkylthio group, and RSP2/SP is a 1-hydrazono-C 1-5 -alkyl group, are prepared by reacting a salt of the formula with a compound of the formula where RSP6/SP is formyl, acetyl, propionyl, butyryl or pentanoyl, and condensing the intermediate carbonyl compound with a hydrazine having two hydrogen atoms attached to the same nitrogen atom. Specified hydrazine reactants include heterocyclic hydrazines, phenylhydrazines, in which the phenyl group may be substituted by alkyl, sulpho, nitro, carboxy or chloro, thiosemicarbazide and carbamoylhydrazines. Products include benzothiazolium, benzoxazolium, naphtho-[2,1 -d]-thiazolium, quinolinium, benzoselenazolium, benzimidazolium and indolium iodide, chloride, bromide, tosylate, acetate, benzene sulphonate, hydrosulphate, thiocyanate, perchlorate, propionate and cyanate. The quaternary salts are used as fogging agents in photographic emulsions.