Abstract:
NEW MATERIAL:The compound of formula I (Y is piperidino, dimethylamino, 1-pyrrolidinyl, etc.; R is H or methyl; R1 is H, 1-3C alkyl or phenyl; A is 1-4C hydrocarbon residue; Z is 1-4C alkyl, thienyl, pyridyl, furyl, etc.; l is 1-5; m and n are 0 or 1; p is 0-2). EXAMPLE:N-[3-[3-(piperidinomethyl)phenoxy]propyl]-2-(benzylthio)-aceta mide. USE:A remedy for peptic ulcer. It has activity to suppress secretion of gastric acid by its excellent antagonistic activity to histamine H2 receptor and is useful for the remedy of gastric and duedenal ulcer. PREPARATION:The compound of formula I can be produced by reacting the compound of formula II (X is halogen) with the compound of formula III in an inert solvent such as dichloromethane at 0 deg.C - refluxing temperature optionally in the presence of a condensation agent (e.g. alkali metal hydride).
Abstract:
PURPOSE:To obtain an aromatic fluoride safely and in high yield, by reacting an aromatic diazonium halogenoborate with hydrogen fluoride or hydrogen fluoride and a base under light irradiation. CONSTITUTION:An aromatic diazonium halogenoborate is reacted with hydrogen fluoride or hydrogen fluoride and a base under light irradiation at -50-100 deg.C to give an aromatic fluoride. A high-temperature mercury vapor lamp may be cited as a light source used for light irradiation. Irradiation time is 5min-24 hr. An amine compound except a primary amine and an ether compound may be preferable as the base and the amount of the base used is 5-90wt.% based on sum of hydrogen fluoride and the base. The reaction can also be carried out in a solvent such as chlorobenzene, CCl4 or pentane to dissolve the aromatic fluoride but not hydrogen fluoride.
Abstract:
NEW MATERIAL:A phenoxyisobutyric acid amide derivative shown by the formula I {R is lower alkyl, halogen, CF 3 , NO 2 , or lower alkoxy; n is 0W3 integer; Het is pyridine ring, pyrimidine ring, isooxazole ring, isothiazole ring, thiadiazole ring, or quinoline ring which man contain substituent group (each group in R except CF 3 )}. EXAMPLE: N-(4,6-Dimethylpyridin-2-yl)-α-(4-chlorophenoxy)isobu-tyric acid amide. USE: An agricultural and horticultural fungicide applicable to a wide range of blights, usable by application into water, or soil application besides foliage dispersion, having both preventing a remedying effects, having neither toxicity to human and animals not toxicity to fishes. PREPARATION: A compound shown by the formula II or its reactive derivative is reacted with a compound shown by the formula III in a proper solvent such as acetone, etc., in the presence of a reaction auxiliary such as triethylamine, to give a compound shown b the formula I. COPYRIGHT: (C)1986,JPO&Japio