Tetrahedron

Synthetic studies related to diketopyrrolopyrrole (DPP) pigments. Part 3: Syntheses of tri-and tetra-aryl DPPs

…, CJH Morton, AMZ Slawin, DM Smith, NJ Westwood…

文献索引：Riggs, Richard L.; Morton, Colin J. H.; Slawin, Alexandra M. Z.; Smith, David M.; Westwood, Nicholas J.; Austen, William S. D.; Stuart, Katie E. Tetrahedron, 2005 , vol. 61, # 47 p. 11230 - 11243

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被引用次数: 27

摘要

Novel synthetic methodologies leading towards 2, 3, 5-triaryl-and 2, 3, 5, 6-tetraaryl-2, 5- dihydropyrrolo [3, 4-c] pyrrole-1, 4-diones (tri-and tetra-aryl-DPPs) and their derivatives have been investigated. Direct arylation of 3, 6-diphenyl-DPP was possible using 1-fluoro-2, 4- dinitrobenzene. Acylation of ethyl 2-aryl-4, 5-dihydro-5-oxopyrrole-3-carboxylates with N- arylbenzimidoyl chlorides in the presence of a strong base gives the novel 2, 3, 6-triaryl- ...