Abstract
Acidic anilines such as diphenylamine, phenothiazine, and nitroanilines are efficiently allylated under palladium catalysis using allyl carbonates as allylating reagents. A stereochemical study of the reactions of ethyl cis-5-methyl-2-cyclohexenylcarbonate with 4-nitro- and 2,4-dinitroaniline was performed. Bidentate phosphines as stabilizing ligands gave clean retention of configuration whereas triphenylphosphine permitted cis-trans isomerization of the allylic carbonate, the allylation reactions occurring under Curtin-Hammet preequilibrium conditions.
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