6928-56-9Relevant articles and documents
CONTRIBUTION OF THE PYRYLIUM STRUCTURE TO THE ELECTROCHEMICAL PROPERTIES OF NITROFLAVONES
Deriglazov, N. M.,Kalistratova, E. F.,Tyukavkina, N. A.
, p. 233 - 236 (1982)
The polarographic behavior of 3- and 4'-nitroflavones on a dropping mercury electrode in Britton-Robinson buffer solutions was investigated.It is shown that, depending on its position, the nitro group displays properties that are typical only for aromatic
The base-induced regioselective radical arylation of 3-aminochromone with aryl hydrazine
Karvembu, Ramasamy,Murugesh, Nithya,Vedachalam, Seenuvasan
, p. 7884 - 7891 (2020/11/02)
A simple and efficient direct radical C-2 arylation of 3-aminochromone derivatives with aryl hydrazine is described. The aryl hydrazine acts as an initiator and source for the aryl radical via the cleavage of the C-N bond of aryl hydrazine. The reaction proceeds via a base-promoted single electron transfer (SET) pathway. The aryl radical abstracts a single electron from 3-aminochromone, which generates a C2-radical iminium ion to undergo a cross-coupling reaction with an aryl radical, and this process offers an array of regioselective 2-aryl substituted 3-aminochromones. This journal is
Regioselective 3-nitration of flavones: A new synthesis of 3-nitro- and 3-aminoflavones
Patoilo, Diana T.,Silva, Artur M. S.,Cavaleiro, Jose A. S.
experimental part, p. 1381 - 1385 (2010/08/19)
A new, general, and regioselective method for the 3-nitration of flavones have been developed. The nitration reaction is solvent dependent, proceeds via a nitro radical pathway, and the corresponding 3-nitroflavones have been obtained in moderate to very