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- W2084978091 endingPage "9873" @default.
- W2084978091 startingPage "9864" @default.
- W2084978091 abstract "Abstract A procedure for the synthesis of functionalized, substituted pyrroles by 1,3‐dipolar cycloaddition of azomethine ylides has been developed. This protocol is based on the metal‐catalyzed cycloaddition of α‐iminoesters with sulfonyl dipolarophiles, followed by the base‐promoted elimination of the sulfonyl groups. A wide variety of 2,5‐disubstituted and 2,3,5‐ and 2,4,5‐trisubstituted pyrroles have been prepared in satisfactory yields from 1,2‐bis(sulfonyl ethylene), β‐sulfonylenones, and β‐sulfonylacrylates. This method can be applied in an iterative and straightforward manner to the construction of oligopyrroles, from bipyrroles to pentapyrroles. Iterative [ n +1] and [ n +2] approaches have been devised, the latter involves double 1,3‐dipolar cycloaddition from pyrrolyl‐based bis(iminoesters)." @default.
- W2084978091 created "2016-06-24" @default.
- W2084978091 creator A5014883363 @default.
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- W2084978091 creator A5047799130 @default.
- W2084978091 creator A5055758727 @default.
- W2084978091 creator A5065650028 @default.
- W2084978091 date "2010-08-17" @default.
- W2084978091 modified "2023-10-18" @default.
- W2084978091 title "Pyrrole and Oligopyrrole Synthesis by 1,3-Dipolar Cycloaddition of Azomethine Ylides with Sulfonyl Dipolarophiles" @default.
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