Azobenzenes react with a stoichiometric amount of cobalt carbonyl and excess methyl iodide under phase-transfer conditions (benzene, water, and benzyltriethylammonium chloride as the phase-transfer agent) to give acetic acid 1,2-diaryl-2-acetylhydrazides in reasonable yields. Byproducts arising from nitrogen-nitrogen bond cleavage were formed in several of the reactions. Reductive monoacylation of azobenzenes occurs on reaction with Co2(CO)8, methyl iodide, and a catalytic amount of p-toluenesulfonic acid under biphasic conditions.
Biphasic and phase-transfer-catalyzed N-monoacylation and N,N'-diacylation of azobenzenes by cobalt carbonyl / D. Roberto, H. Alper. - In: ORGANOMETALLICS. - ISSN 0276-7333. - 9:4(1990), pp. 1245-1248.
Biphasic and phase-transfer-catalyzed N-monoacylation and N,N'-diacylation of azobenzenes by cobalt carbonyl
D. RobertoPrimo
;
1990
Abstract
Azobenzenes react with a stoichiometric amount of cobalt carbonyl and excess methyl iodide under phase-transfer conditions (benzene, water, and benzyltriethylammonium chloride as the phase-transfer agent) to give acetic acid 1,2-diaryl-2-acetylhydrazides in reasonable yields. Byproducts arising from nitrogen-nitrogen bond cleavage were formed in several of the reactions. Reductive monoacylation of azobenzenes occurs on reaction with Co2(CO)8, methyl iodide, and a catalytic amount of p-toluenesulfonic acid under biphasic conditions.Pubblicazioni consigliate
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