Rearrangements Encountered in the Attempted Syntheses of Pyridoazepinone Carboxylic Acids
作者:William J. Sanders、Xiaolin Zhang、Rolf Wagner
DOI:10.1021/ol0481378
日期:2004.11.1
products. Seven-memberedringformation was attempted by ring expansion of a six-membered ring and by aldolringclosure. In each case, the major product resulted from rearrangement of the starting material without detection of the desired product. Ultimately, an isomeric pyridoazepinone ethyl ester was prepared; however, attempted saponification resulted in another unusual rearrangement. [reaction: see