129461-29-6Relevant articles and documents
Vilsmeier-Haack reaction with succinamidals. A convenient synthesis of 5-chloropyrrole-2-carboxaldehydes and 5-chloropyrrole-2,4-dicarboxaldehydes
Guzman, Angel,Romero, Moises,Muchowski, Joseph M.
, p. 791 - 794 (2007/10/02)
It is shown that the reaction of N-alkylsuccinamidals (2) with Vilsmeier-Haack reagent derived from DMF and phosphorus oxychloride can be controlled to preferentially produce either 5-chloropyrrole-2-carboxaldehydes (8) or 5-chloropyrrole-2,4-dicarboxalde