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One-Step Synthesis of Dialkyl 2-[(4-Methylphenyl)sulfonyl]-1H-pyrrole-3,4-dicarboxylates (III) by Reaction of Acetylenedicarboxylates with “Tosylmethyl Isocyanide” (TsMIC) and Triphenylphosphine.

✍ Scribed by Abdolali Alizadeh; Hassan Masrouri; Sadegh Rostamnia; Farnaz Movahedi

Publisher: John Wiley and Sons
Year: 2006
Weight: 13 KB
Volume: 37
Category: Article
ISSN: 0931-7597
DOI: 10.1002/chin.200641099

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## Abstract The reactive 1 : 1 adducts in the reaction between Ph~3~P and dialkyl acetylenedicarboxylates have been trapped with ‘tosylmethyl isocyanide’ (TsMIC; **1**) to yield dialkyl 2‐[(4‐methylphenyl)sulfonyl]‐1__H__‐pyrrole‐3,4‐dicarboxylates **3** (__Scheme 1__). The structures of the highly

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