An Approach toward Isoindolobenzazepines Using the Ammonium Ylide/Stevens [1,2]-Rearrangement Sequence
作者:Albert Padwa、L. Scott Beall、Cheryl K. Eidell、Kimberly J. Worsencroft
DOI:10.1021/jo001684w
日期:2001.4.1
rearranged product derived from an ammoniumylide intermediate could be detected in the crude reaction mixture. In contrast to this result, reaction of the related diazo dihydroisoquinoline amide 46 with Rh2(OAc)4 afforded the isoindolobenzazepine ring system in high yield. Formation of the 5,7-fused skeleton was rationalized in terms of a spirocyclicammoniumylide that underwent a preferential Stevens