911793-29-8Relevant articles and documents
The Rearrangements of 2-Nitroenamines in Acidic Solutions
Krowczynski, Adam,Kozerski, Lech
, p. 341 - 349 (2007/10/02)
2-Nitroenamines react in a concentrated sulfuric acid, methanolic sulfuric acid or in TFA solutions giving a variety of products such as: the amides of pyrogronic acid oxime, di- and tri- azaindenes, 1-N-oxide of methoxysubstituted quinoxaline, oxazole, pyrazole derivatives and 1,3-dinitro-4-alkylaminobutadienes-1,3.Each of the products can be selectively synthesized by changing reaction medium and a substituent on the enamine nitrogen.The mechanism of formation of these derivatives is discussed, in a few instances, on the basis of spectroscopic evidence found that the nitronic acid is the reactive species in acidic solution.