2078-09-3Relevant articles and documents
Oxidative coupling of N,N-Dialkylanilines using iodic acid and sodium nitrite
Huddar, Sameerana N.,Mahajan, Ulhas S.,Akamanchi, Krishnacharya G.
scheme or table, p. 808 - 809 (2011/01/07)
A new reagent system, a combination of iodic acid and sodium nitrite has been investigated for oxidative coupling of N,N-disubstituted anilines. A facile para-selective coupling occurs to give benzidines at room temperature in water as a solvent. A tentative mechanism is proposed with some supporting experiments.
Synthesis of some new 2-substituted-phenyl-1H-benzimidazole-5-carbonitriles and their potent activity against Candida species
G?ker, Hakan,Ku?, Canan,Boykin, David W.,Yildiz, Sulhiye,Altanlar, Nurten
, p. 2589 - 2596 (2007/10/03)
New 2-substituted-phenyl-1H-benzimidazole-5-carboxylic acids (35, 38), ethyl-5-carboxylate (36), -5-carboxamides (37, 39),-5-carboxaldehyde (42), -5-chloro (40), -5-trifluoromethyl (41), and -5-carbonitriles (44-53, 55-67), -6-carbonitrile (54) were prepa
A 'one-pot' phase transfer alkylation/hydrolysis of o-nitrotrifluoroacetanilides. A convenient route to N-alkyl o-phenylenediamines
Brown, Samuel A.,Rizzo, Carmelo J.
, p. 4065 - 4080 (2007/10/03)
A variety of o-nitrotrifluoroacetanilides undergo a one-pot alkylation/hydrolysis to give N-alkyl o-nitroanilines in 40-94% yield. Dimethylsulfate, benzyl bromide and 1-bromo-propane were used as the electrophiles.
Synthesis of 1-Alkoxy-2-Alkyl-Benzimidazoles from 2-Nitroanilines via Tandem N-Alkylation-Cyclization-O-Alkylation
Gardiner, John M.,Loyns, Colin R.,Schwalbe, Carl H.,Barrett, Garry C.,Lowe, Philip R.
, p. 4101 - 4110 (2007/10/02)
Substituted 2-nitroanilines react with benzylic, allyl and alkyl halides to give 2-aryl-1-benzyloxy-, 1-allyloxy-2-vinyl- and 1-alkoxy-2-alkyl-benzimidazoles, in a one-pot cascade process involving 1-alkylation-cyclization-O-alkylation. 2-Aryl-1-benzyloxy- and 1-allyloxy-2-vinyl- derivatives are obtained in high yields (79-98percent), while with simple alkyl halides, yields of the benzimidazoles are substrate dependent.An X-ray crystal structure of 2,4-dimethyl-1-ethoxybenzimidazole is presented.