- Formation of benzocyclobutenes from substituted oxocycloocta-2,8-diene-1,2-dicarboxylates Dedicated to the memory of Professor Alan Roy Katritzky
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Substituted benzocyclobutenes were isolated from the reaction of substituted oxocycloocta-2,8-diene-1,2-dicarboxylates with DMAD which were themselves formed by the microwave assisted [2+2] cycloaddition of cyclic enaminones to dimethyl acetylenedicarboxylate. The high pressure hydrogenation of (1E,2Z)-dimethyl 3-(dimethylamino)-7-oxocycloocta-2,8-diene-1,2-dicarboxylate gave oxabicyclo[3.3.1]non-3-ene-2,3-dicarboxylates, while use of low pressure hydrogenation resulted in only the carbonyl group being reduced to give the corresponding hydroxyl derivative which was proposed as an intermediate of the oxabicyclo[3.3.1]nonanes formed using high pressure hydrogenation.
- Bezen?ek, Jure,Gro?elj, Uro?,Po?kaj, Marta,Svete, Jurij,Stanovnik, Branko
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- β-Acylvinyl-dicarbonyl-η5-cyclopentadienyl-iron Complexes
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Reactions of β-chlorovinylcarbonyl compounds 10, 14, 16, 18, 20, 22, with sodium dicarbonyl-η5-cyclopentadienyl-ferrate (NaFp) furnish β-acylvinyl-dicarbonyl-η5-cyclopentadienyl-iron complexes 15, 17, 19, 21, 23 and binuclear iron co
- Gompper, Rudolf,Kottmair, Eduard
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p. 833 - 847
(2007/10/02)
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- Reactions Between Enaminones and Enones. Part 2. Alkylation of Enaminones with Acrylic Esters
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The anion of 3-amino-5,5-dimethylcyclohex-2-enone (1) reacts with ethyl acrylate to give the product of C- or N-alkylation, depending on the conditions.With methyl methacrylate or methyl crotonate, the major product results from N-alkylation, but this rea
- Greenhill, John V.,Moten, M. Ashraf,Hanke, Reiner
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p. 287 - 290
(2007/10/02)
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- N-ALKYLATION OF ENAMINONES
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The base catalyzed N-alkylation of a series of primary and secondary enaminones has been examined in detail.The enaminone anion was found to be a weak nucleophile.Best results were obtained in tetrahydrofuran or dioxane with sodium hydride and an alkyl io
- Greenhill, John V.,Moten, Ashraf M.
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p. 3405 - 3408
(2007/10/02)
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