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Trapping and structure determination of an intermediate in the reaction between 2-methyl-5-t.butylpyrrole and dichlorocarbene

✍ Scribed by A. Gambacorta; R. Nicoletti; S. Cerrini; W. Fedeli; E. Gavuzzo

Book ID: 104245820
Publisher: Elsevier Science
Year: 1978
Tongue: French
Weight: 268 KB
Volume: 19
Category: Article
ISSN: 0040-4039
DOI: 10.1016/s0040-4039(01)94795-1

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✦ Synopsis

2,5-dialkyl pyrroles react in protic media with dichlorocarbene generated under basic conditions giving rise to ring expansion products (2,6-dialkyl-3chloropyridines) and addition products (2,5-dialkyl-2-dichloromethyl-2H-pyrl roles or Plancher's pyrrolenines) . The latter are not intermediates for the 2 ring expansion reaction .

3 4 According to the mechanism generally accepted , these two product types

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