(5) Cf. HA DeWald and AM Moore, J. Am. Chem. Soc., 80, 3941 (1958); F. Weygand, H. Bestmand, and E. Klieger, Chem. Ber., 91, 1037 (1968). The latter report is closely related to our study and was located (during a search of diazo ketone rearrangement reactions) when the present contribution was in press. Apparently the Weygand synthesis was missed in prior summaries of DON a theses and abstracts.(6) DON is moat stable at pH 4.5-6.5 F ...
