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A convenient method for the synthesis of unsymmetrical 3,4-disubstituted pyrroles

✍ Scribed by Patrick W. Shum; Alan P. Kozikowski

Publisher: Elsevier Science
Year: 1990
Tongue: French
Weight: 247 KB
Volume: 31
Category: Article
ISSN: 0040-4039
DOI: 10.1016/s0040-4039(00)97171-5

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✦ Synopsis

A simprijidprocedure for the synthesis ~f3,4~r~~-~-[nis(I-methylethyl)sityll-IH-pyrrole (21 is described together with its sequential halogen-metal exchange che&tty to @kd3,4-disubstitutedpwole.f.

During efforts relating to the synthesis of analogues of the protein kinase C (PKC) activator,' lyngbyatoxin A, the need arose to prepare certain 3,4disubstituted pyrroles as synthetic intennedlates. Because electrophilic aromatic substitution reactions of pyrroles occur predominantly at the a-position, selective

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