- An efficient and convenient Cu(OAc)2/air mediated oxidative coupling of azoles via C-H activation
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An efficient and convenient approach to construct C-C bonds at the 2-position of azoles via Cu(OAc)2/air mediated oxidative homo- and cross-coupling reaction was reported. The corresponding products were obtained in good to excellent yield.
- Li, Yan,Jin, Jun,Qian, Weixing,Bao, Weiliang
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supporting information; experimental part
p. 326 - 330
(2010/02/16)
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- Copper-mediated amidation of heterocyclic and aromatic C-H bonds
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A copper-mediated aerobic coupling reaction enables direct amidation of heterocycles or aromatics having weakly acidic C-H bonds with a variety of nitrogen nucleophiles. These reactions provide efficient access to many biologically important skeletons, in
- Wang, Qiu,Schreiber, Stuart L.
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supporting information; experimental part
p. 5178 - 5180
(2010/01/06)
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- The reaction of 1-ethoxycarbonyl-3-methylbenzimidazolium salts with electrogenerated and potassium superoxide
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1-Ethoxycarbonyl-3-methylbenzimidazolium salts, which have two possible reactive sites toward superoxide, were allowed to react with KO2 and electrogenerated superoxide to give the ring-opened products and 1- methylbenzimidazoles. The former compounds were specific products for superoxide, and the product distributions were revealed to depend on the counter cation of superoxide.
- Itoh,Nagata,Okada,Ohsawa
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p. 1154 - 1156
(2007/10/02)
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- ACYLATION OF BENZIMIDAZOLE BY THE REGEL-BUECHEL METHOD. 2. DEACYLATION AND DISSOCIATION OF 1-METHYL-3-ACYL-2-(1'-METHYL-2'-BENZIMIDAZOLYL)-4-BENZIMIDAZOLINES
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With excess acyl halide 1-methyl-3-acyl-2-(1'-methyl-2'-benzimidazolyl)-4-benzimidazoline is converted to an unstable 1-methyl-3-acyl-2-(1'-methyl-3-acyl-4'-benzimidazolin-2'-yl)benzimidazolium chloride, which undergoes intramolecular redox cleavage with the formation of 1,1'-dimethyl-2,2'-dibenzimidazolyl and an aldehyde and dissociates at the C-C bond that connects the benzimidazolium and benzimidazoline fragments into a carbene yield and a 1-methyl-3-acylbenzimidazolium chloride.
- Khristich, B. I.,Bondarenko, E. V.
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p. 284 - 287
(2007/10/02)
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- HETEROARYLATION OF ORGANOMETALLIC DERIVATIVES OF AZOLES BY N-ACYLBENZOPYRIDINIUM SALTS
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The dimerization products 1,1'-dimethyl-2,2'-bibenzimidazolyl and 2,2'-dibenzoyl-1,1',2,2'-tetrahydro-1,1'-biisoquinoline were isolated in the reaction of 1-methyl-2-imidazolyl- and 1-methyl-2-benzimidazolylmagnesium bromides with isoquinoline (quinoline) in the presence of benzoyl chloride together with the products from the heteroarylation of benzimidazole (imidazole).Their formation indicates the possibility of reaction by the SET mechanism.
- Sheinkman, A. K.,Chmilenko, T. S.,Nezdiiminoga, T. N.,Tertov, B. A.,Koshchienko, Yu. V.,Klyuev, N. A.
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p. 384 - 387
(2007/10/02)
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