Phosphazene base-catalyzed condensation of trimethylsilylacetate with carbonyl compounds
作者:Koji Kobayashi、Masahiro Ueno、Yoshinori Kondo
DOI:10.1039/b606056k
日期:——
The t-Bu-P4 base was found to be an excellent catalyst for the condensation of trimethylsilylacetate or trimethylacetonitrile with carbonylcompounds to form functionalized alkenes and beta-enaminoesters were also synthesized by the condensation with formanilides.
A novel and efficient palladium-catalyzed intramolecular oxidative cyclization of tertiary enamines for the synthesis of 1,3,4-trisubstituted pyrroles and 1,3-disubstituted indoles has been developed. Trifluoroacetic acid plays an important role in the reaction. A series of pyrroles and indoles with substitution patterns that are not easily accessible by traditional routes were synthesized in good