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- W2949083397 abstract "A simple and efficient method for the synthesis of (<i>E</i>,<i>E</i>)-1-(arylsulfonyl)buta-1,3-dienes bearing electron-withdrawing substituents like cyano and ethoxycarbonyl at position 4, involving a one-pot alkylation of bis(phenylsulfonyl)methane with<i> trans</i>-ethyl 4-bromocrotonate/<i>trans</i>-4-bromocrotononitrile, and elimination of arylsulfinic acid, is described. These dienes undergo facile mono [3+2] cycloaddition with azomethine ylides chemoselectivity to furnish functionalized 1,3,4-trisubstituted pyrrolidines. Oxidation of these cycloadduct with MnO<sub>2</sub>·SiO<sub>2</sub> under mild conditions provides 1,3,4-trisubstituted pyrroles." @default.
- W2949083397 created "2019-06-27" @default.
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- W2949083397 date "2013-06-11" @default.
- W2949083397 modified "2023-10-16" @default.
- W2949083397 title "A One-Pot Stereoselective Synthesis of Electron-Deficient 4-Substituted (E,E)-1-Arylsulfonylbuta-1,3-dienes and Their Chemoselective [3+2] Cycloaddition with Azomethine Ylides - A Simple Synthesis of 1,3,4-Trisubstituted Pyrrolidines and Pyrroles" @default.
- W2949083397 doi "https://doi.org/10.1055/s-0033-1339181" @default.
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