18378-18-2Relevant academic research and scientific papers
Nonlinear bronsted and hammett correlations associated with reactions of 4-chloro-7-nitrobenzofurazan with anilines in dimethyl sulfoxide solution
Jmaoui,Boubaker,Goumont
, p. 152 - 160 (2013/04/10)
The kinetics and mechanism of nucleophilic aromatic substitution reactions of 4-chloro-7-nitrobenzofurazan 1 with 4-X-substituted anilines 2a-g (X = OH, OCH3, CH3, H, I, Cl, and CN) are investigated in a dimethyl sulfoxide (Me2
Single electron transfer (SET) pathway: Nucleophilic substitution reaction of 4-chloro-7-nitrobenzofurazan with anilines in MeOH-MeCN mixtures
Choi, Hojune,Yang, Kiyull,Lee, Sang-Gyeong,Lee, Jong Pal,Koo, In Sun
scheme or table, p. 2801 - 2805 (2012/05/19)
A nucleophilic substitution reaction of 4-chloro-7-nitrobenzofurazan (NBF-Cl) with anilines in MeOH-MeCN mixtures was conducted at 25, 35, and 45 oC. Based on the higher nuc values (1.0-1.6) of the reaction and a good correlation of the rate constants wit
High Bronsted βnuc values in SNAr displacement. An indicator of the SET pathway?
Terrier, Francois,Mokhtari, Malika,Goumont, Regis,Halle, Jean-Claude,Buncel, Erwin
, p. 1757 - 1763 (2007/10/03)
Nucleophilic substitutions of 4-chloro-7-nitrobenzofurazan (NBD-Cl) and 3-methyl-1-(4-nitrobenzofurazanyl)-imidazolium ions (NBD-Im+) with a series of 4-X-substituted anilines have beeen kinetically investigated in 70-30 (v/v) and 20-80 (v/v) H
Vergleichende Untersuchungen zur Arylaminierung von Benzofuroxan-Derivaten
Goehrmann, B.,Niclas, H.-J.
, p. 1054 - 1060 (2007/10/02)
The amination of benzofuroxan 2a and monosubstituted benzofuroxans 2b-e with alkali metal salts of formanilides 1 and sodium acetanilides 6 is described.Thus, the reaction of 2a with 6a-d gives the benzotriazole 1-oxides 3a-d.The benzofuroxans 2b and 2c react with sodium formanilides to give the isomeric mixtures 3f/3g and 3h/3i.Potassium 4-nitroformanilide reduces 2a furnishing benzofurazan 7.Nitrosubstituted benzofuroxans such as 2d and 2e undergo a carbocyclic amination leading to the benzofurazans 8 and 9.
Derivatization of Amines with 4-Substituted 7-Nitrobenzofurazans
Heberer, H.,Kersting, H.,Matschiner, H.
, p. 487 - 504 (2007/10/02)
Electrophilic derivatives of 4-nitro-benzofurazan with different reactivities were used to synthesize 28 new mono- and disubstituted 4-amino-7-nitrobenzofurazans 2b, 2d, 2f-2i, 2l, 2m-2n, 3b-3f, 3h-3j, 4c-4d, 4f-4k, 4m, 4o-4p.A reaction mechanism is proposed on the basis of the differences of the reactivities and a preliminary kinetic examination.The acid character of the N-H-function in monosubstituted compounds is demonstrated by means of spectroscopical investigation of pKa-values.Data from i.r., u.v./vis, and fluorescence studies are offered.
