METHOD OF PRODUCING N',N'-BIS{[N-ALLYL(THIO)CARBAMOYL METHYL]}ARYL HYDRAZIDES Russian patent published in 2015 - IPC C07C241/04 C07C243/38 C07D213/54 C07D213/56 

Abstract RU 2551686 C1

FIELD: chemistry.

SUBSTANCE: invention relates to organic chemistry, and specifically to a method of producing aryl hydrazide derivatives of general formula (1). The method includes reacting a carbamide of general formula CH2=CHCH2NHC(X)NHCH2N(Me)2 [X = O, S] with hydrazides of aryl carboxylic acids (aryl hydrazides) of general formula RC(O)NHNH2 [R=m-C5H4N, p-C5H4N, o-MeOC6H4] in the presence of a samarium chloride crystalline hydrate catalyst SmCl3·6H2O with molar ratio carbamide:aryl hydrazide:SmCl3·6H2O=20:10:(0.3-0.7) at 80°C and atmospheric pressure in ethanol for 6-10 hours.

EFFECT: described is a method of producing aryl hydrazides of formula (1), which have potential for use as selective sorbents and extractants of ore and precious metals.

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RU 2 551 686 C1

Authors

Dzhemilev Usein Memetovich

Ibragimov Askhat Gabdrakhmanovich

Khajrullina Regina Radievna

Genijatova Al'Fija Ravzatovna

Popod'Ko Natal'Ja Romanovna

Dates

2015-05-27Published

2013-11-05Filed