Neighboring Group Participation of the Indole Nucleus: An Unusual DAST-Mediated Rearrangement Reaction
作者:David J. Hallett、Ute Gerhard、Simon C. Goodacre、Laure Hitzel、Timothy J. Sparey、Steven Thomas、Michael Rowley、Richard G. Ball
DOI:10.1021/jo0004759
日期:2000.8.1
A rearrangement reaction involving the indole nucleus was investigated using stereochemical markers and low-temperature NMR experiments. Treatment of (3S, 4S)-3-hydroxy-4-(2-phenyl-1H-indol-3-yl)-piperidine-1-carboxylic acid benzyl ester (>90% ee) with diethylaminosulfur trifluoride gave stereospecifically (3S, 4S)-4-fluoro-3-(2-phenyl-1H-indol-3-yl)-piperidine-1-carboxylic acid benzyl ester (>90%