- Synthesis of N-Heterocycles by Reductive Cyclization of Nitroalkenes Using Molybdenum Hexacarbonyl as Carbon Monoxide Surrogate
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The development of a method that uses molybdenum hexacarbonyl [Mo(CO)6] as carbon monoxide (CO) surrogate for the palladium-catalyzed reductive cyclization of nitroalkenes into indoles or thienopyrroles is reported. Several types of nitroalkenes could be transformed into the desired products in excellent yields and in most cases with complete regioselectivities and higher yields than those previously reported with palladium/CO system.
- Su, Zhiyou,Liu, Bo,Liao, Hongze,Lin, Hou-Wen
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supporting information
p. 4059 - 4066
(2020/06/21)
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- Indole synthesis: palladium-catalyzed C-H bond amination via reduction of nitroalkenes with carbon monoxide
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Nitroalkenes have been called 'chemical chameleons' due to their versatility in numerous synthetic transformations. Herein, we describe the first transition metal-catalyzed transformation of conjugated nitroalkenes into indoles. Under mild reaction condit
- Hsieh, Tom H.H.,Dong, Vy M.
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experimental part
p. 3062 - 3068
(2009/09/05)
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- Substituted 5-dinitromethyl-3-phenyl-1,2,4-oxadiazoles in reactions with arylethenes
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Reactions of substituted 5-dinitromethyl-3-phenyl-1,2,4-oxadiazoles with arylethenes of various nucleophilicity, number and position of substituents attached to the double bond give rise to nitroalkenes and secondary products resulting from α-nitroketones or nitroalcohols O-alkylation. The direction of transformations in the arising ion pair is governed predominantly by steric effects.
- Tyrkov
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p. 890 - 892
(2007/10/03)
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- Reduction of 2,2-Diaryl-1-nitroethylenes : New Synthesis of 2,2-Diarylacetaldehydes and 1,1,4,4-Tetraarylbuta-1,3-dienes
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2,2-Diarylacetaldehydes (VII) have been obtained by selective and controlled reduction of 2,2-diaryl-1-nitroethylenes (IV) in acid medium, and also by acid hydrolysis of 2,2-diarylvinyl-N-acetamides (VI).Nitroalkenes (IV) have been prepared by the reaction of 2,2-diarylethylenes (I) with nitrous acid whereas N-acetamide derivatives (VI) have been obtained by reductive acetylation of the nitro compounds (IV).A number of 1,1,4,4-tetraarylbuta-1,3-dienes (XI) have been obtained by the condensation of 2,2-diarylacetaldehydes (VII) with appropriate 2,2-diarylethylenes (I).Structures of the products have been assigned on the basis of analytical data and chemical and spectral evidences.
- Tadros, Wadie,Awad, Sami B.,Sakla, Alfy B.,Abdul-Malik, Nadia F.,Armanious, Emili R.
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p. 199 - 202
(2007/10/02)
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