126431-49-0Relevant articles and documents
CONDENSATION OF FORMAMIDES AND THEIR VINYLOGS WITH 2,4,7-TRI- AND 2,4,5,7-TETRANITROFLUORENES
Kravchenko, N. V.,Abramov, V. N.,Semenenko, N. M.
, p. 1752 - 1757 (2007/10/02)
In acetic anhydride 2,4,7-tri- and 2,4,5,7-tetranitrofluorenes react with formamides and their vinylogs with the formation of enamines.In the electronic absorption spectra of the enamines the intramolecular charge-transfer bands undergo a bothochromic shi