Stereoselective Oxidative Rearrangement of 2-Aryl Tryptamine Derivatives
作者:Mohammad Movassaghi、Michael A. Schmidt、James A. Ashenhurst
DOI:10.1021/ol8015176
日期:2008.9.18
The oxidation of 2-aryl tryptamines followed by a stereoselective rearrangement provides a versatile strategy for the synthesis of C3-quaternary oxindoles bearing a C3-aryl group. Treatment of optically active 2-aryl hydroxyindolenines with scandium trifluoromethanesulfonate in toluene at 110 degrees C leads to complete and stereoselective isomerization to the corresponding C3-aryl oxindoles which represent versatile intermediates for the synthesis of C3a-aryl hexahydropyrroloindoles.