The electrophilic reactivity of a series of novel pyrazole-4,5-dione derivatives in the organocatalytic Friedel-Crafts reaction with various substituted indoles has been tested. The disclosed procedure catalyzed by a cinchona alkaloid derivative allows the conjugation of two very important aza-heterocyclic scaffolds to generate a new class of indolylpyrazolones bearing a tetrasubstituted stereocenter in excellent yields (up to 99%) and with enantioselectivities of up to 94:6 er. © Georg Thieme Verlag Stuttgart. New York.
Asymmetric oganocatalytic Friedel-Crafts hydroxyalkylation of indoles using electrophilic pyrazole-4,5-diones / Vetica, Fabrizio; Chauhan, Pankaj; Mahajan, Suruchi; Raabe, Gerhard; Enders, Dieter. - In: SYNTHESIS. - ISSN 0039-7881. - 50:5(2018), pp. 1039-1046.
Titolo: | Asymmetric oganocatalytic Friedel-Crafts hydroxyalkylation of indoles using electrophilic pyrazole-4,5-diones | |
Autori: | ||
Data di pubblicazione: | 2018 | |
Rivista: | ||
Citazione: | Asymmetric oganocatalytic Friedel-Crafts hydroxyalkylation of indoles using electrophilic pyrazole-4,5-diones / Vetica, Fabrizio; Chauhan, Pankaj; Mahajan, Suruchi; Raabe, Gerhard; Enders, Dieter. - In: SYNTHESIS. - ISSN 0039-7881. - 50:5(2018), pp. 1039-1046. | |
Handle: | http://hdl.handle.net/11573/1438020 | |
Appartiene alla tipologia: | 01a Articolo in rivista |
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