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- W2011196975 abstract "A simple indolyl titanium complex, Ti(NMe2)2(IndMe2)2 (1), can be prepared from commercially available reagents, Ti(NMe2)4 and 2,3-dimethylindole. Indolyl-containing 1 is a catalyst for the selective generation of unusual 2,3-diaminopyrroles from four-component coupling of 2 equiv of an isonitrile, 1 equiv of an arylamine, and 1 equiv of an alkyne in an atom-efficient process. For this study, both terminal and internal alkynes were used with a selection of arylamines to provide 11 examples of 2,3-diaminopyrroles. Yields for terminal alkyne substrates in this reaction were 75−93%. In all cases, terminal alkynes result in one of the α-positions on the pyrrole being unsubstituted. Two reactions with internal alkynes provided pentasubstituted pyrroles in 42% and 88% yield. Catalyst 1, along with six of the pyrrole products, was structurally characterized by single-crystal X-ray diffraction." @default.
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- W2011196975 date "2009-05-19" @default.
- W2011196975 modified "2023-09-29" @default.
- W2011196975 title "One-Step Route to 2,3-Diaminopyrroles Using a Titanium-Catalyzed Four-Component Coupling" @default.
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- W2011196975 doi "https://doi.org/10.1021/om9001928" @default.
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