00989nas a2200157   4500008004100000245012800041210006900169260000800238300001200246520031000258653007100568100001600639700002200655700002300677856013100700       2007                        eng d00aReaction of huisgen zwitterion with diaryl-1,2-diones and ketones: an efficient protocol for carbon-nitrogen bond formation0 aReaction of huisgen zwitterion with diaryl12diones and ketones a  cJAN  a697-7043 a<p>The reaction of Huisgen zwitterion, derived from triphenylphosphine and dialkyl azodicarboxylate, with diaryl-1,2-diones afforded N,N-dicarboalkoxy monohydrazones via a mechanistically novel rearrangement. Cyclic and acyclic ketones furnished vinyl hydrazinedicarboxylates under similar conditions.</p>10abetaines - diazo compounds - hydrazones - ketones - rearrangements1 aNair, Vijay1 aBiju, Akkattu, T.1 aMathew, Smitha, C.  uhttps://library.ncl.res.in/content/reaction-huisgen-zwitterion-diaryl-12-diones-and-ketones-efficient-protocol-carbon-nitrogen