191085-50-4Relevant academic research and scientific papers
Ammonium ylide versus carbonyl ylide formation in the Rhodium(II)-catalyzed decomposition of diazoacetylureas. Generation and X-ray structure of a stable five-membered N-acyl ammonium ylide
Kappe, C. Oliver
, p. 3323 - 3326 (1997)
The Rh(II)-catalyzed decomposition of diazoacetylurea 5 gives rise to carbenoid intermediate 7 which can either cyclize to ammonium ylide 6 or to the isomeric carbonyl ylide dipole 8. In the presence or a rhodium catalyst, ammonium ylide 6 rearranges to c
