Synthesis of Stable 1H-Azirines Reinvestigated: A Structural Corrigendum
摘要:
The isoquinoline-catalyzed synthesis of pretended 1H-azirines from phenacyl bromides and N,N'-dialkylcarbodiimides was repeated. The products do not possess the structure of antiaromatic 1H-azirines, but simple N-acyl-N,N'-dialkylureas were formed instead. This structural corrigendum was confirmed by the independent synthesis of the known ureas and comparison of their H-1 NMR and C-13 NMR spectroscopic data in the case of six compounds. Thus, 1H-azirines keep their classification as very short-lived intermediates.
作者:N. Pravdi?、D. Keglevi?、E. D. Andrews、W. E. Harvey、Roger Bolton、A. F. Casy、J. L. Myers、D. W. Mathiwson、W. B. Whalley、J. M. Blatchly、R. Taylor、A. B. A. Jansen、P. J. Stokes、G. W. H. Cheeseman、J. S. Davidson、J. M. Crabtree、P. N. Gates、E. F. Mooney、J. K. Sutherland、D. A. Widdowson、Stang Mongkolsuk、F. M. Dean、G. W. Kirby、H. P. Tiwari、D. J. Machin、D. F. C. Morris、E. L. Short、R. S. Bluck、A. L. Odell、R. W. Olliff、J. Burdon、W. B. Hollyhead、C. R. Patrick、J. A. Salthouse、T. C. Waddington、Shreekrishna M. Gadedar、Anna Marie Kotsen、Elliott Cohen