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Synthesis of 2,5-bis(N,N-dialkylamino)thiophenes or 1-alkyl-2-N,N-dialkylamino-5-methylthiopyrroles from propargylic amines and isothiocyanates

✍ Scribed by Olga A. Tarasova; Nina A. Nedolya; Vladimir Yu. Vvedensky; Lambert Brandsma; Boris A. Trofimov

Publisher: Elsevier Science
Year: 1997
Tongue: French
Weight: 89 KB
Volume: 38
Category: Article
ISSN: 0040-4039
DOI: 10.1016/s0040-4039(97)01680-8

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✦ Synopsis

A bs trac t: Reaction of lithiated ptopargylic amines with isothiocyanates, followed by addition of t-BuOK, t-BuOH and methyl iodide gives either 2,5-bis(N,N-dialkylamino)thiophenes or 1-alkyl-2-N,N-dialkylamino-5-methylthiopyn'oles depending on the temperature during the treatment with the base.

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