Application of a Cross-Metathesis and Intramolecular Aza-Diels-Alder Sequence to the Synthesis of trans-2,3-Disubstituted Tetrahydroquinolines
摘要:
The synthesis of 2,3-disubstituted tetrahydroquinolines has been achieved by first performing a cross-metathesis of different alkenes with readily available N-allyloxycarbonyl-2-chloro-methylaniline. Among the catalysts tested, Hoveyda-Grubbs reagent appeared to be the most suitable, reaching the substituted analogues with complete E-stereocontrol and convenient yields. An intramolecular aza-Diels-Alder reaction was further carried out in the presence of potassium phosphate as promoter to deliver the corresponding 2,3-disubstituted tetrahydroquinolines.
Application of a Cross-Metathesis and Intramolecular Aza-Diels-Alder Sequence to the Synthesis of trans-2,3-Disubstituted Tetrahydroquinolines
摘要:
The synthesis of 2,3-disubstituted tetrahydroquinolines has been achieved by first performing a cross-metathesis of different alkenes with readily available N-allyloxycarbonyl-2-chloro-methylaniline. Among the catalysts tested, Hoveyda-Grubbs reagent appeared to be the most suitable, reaching the substituted analogues with complete E-stereocontrol and convenient yields. An intramolecular aza-Diels-Alder reaction was further carried out in the presence of potassium phosphate as promoter to deliver the corresponding 2,3-disubstituted tetrahydroquinolines.