6324-13-6Relevant academic research and scientific papers
Palladium-Catalyzed Modular Synthesis of Substituted Piperazines and Related Nitrogen Heterocycles
Montgomery, Thomas D.,Rawal, Viresh H.
supporting information, p. 740 - 743 (2016/03/01)
We report here a novel method for the modular synthesis of highly substituted piperazines and related bis-nitrogen heterocycles via a palladium-catalyzed cyclization reaction. The process couples two of the carbons of a propargyl unit with various diamine components to provide nitrogen heterocycles in generally good to excellent yields and high regio- and stereochemical control. (Chemical Equation Presented).
Quinazoline-based multi-tyrosine kinase inhibitors: Synthesis, modeling, antitumor and antiangiogenic properties
Conconi, Maria Teresa,Marzaro, Giovanni,Urbani, Luca,Zanusso, Ilenia,Di Liddo, Rosa,Castagliuolo, Ignazio,Brun, Paola,Tonus, Francesca,Ferrarese, Alessandro,Guiotto, Adriano,Chilin, Adriana
supporting information, p. 373 - 383 (2013/10/01)
In this work the synthesis and the biological evaluation of some novel anilinoquinazoline derivatives carrying modifications in the quinazoline scaffold and in the aniline moiety were reported. Preliminary cytotoxicity studies identified three derivatives
Titanium and zirconium complexes of robust salophan ligands. Coordination chemistry and olefin polymerization catalysis
Gendler, Shimrit,Zelikoff, Ayellet L.,Kopilov, Jacob,Goldberg, Israel,Kol, Moshe
, p. 2144 - 2145 (2008/09/19)
The synthesis of [ONNO]-type robust Salophan ligands featuring tertiary nitrogen donors is described for the first time. By varying the substitution pattern on the aromatic bridge and on the phenolate rings, four ligands possessing a broad scope of electr
Nitration of ethyl carbamates of phenylenediamines and aniline
Davis, Matthew C.
, p. 2079 - 2089 (2008/02/04)
The methyl and ethyl carbamates of aniline and the diethyl dicarbamates of 1,2-, 1,3-, and 1,4-phenylenediamine were prepared. Nitration of the carbamates gave ring mono-, di-, or trinitro-derivatives in good yield. Copyright Taylor & Francis Group, LLC.
Microwave promoted solvent-free one-pot synthesis of N,N′- disubstituted urea derivatives
Jadhav, Vinod H.,Deshpande, Shubhada S.,Borate, Hanumant B.,Wakharkar, Radhika D.
, p. 205 - 208 (2007/10/03)
An efficient one-pot synthesis of N,N′-disubstituted urea derivatives from substituted anilines, ethyl chloroformate and methyl anthranilate or methyl 3-amino-2-butenoate under microwave irradiation is reported.
Ultrasound promoted 'one pot' conversion of nitrocompounds to carbamates
Chandrasekhar,Narsihmulu,Jagadeshwar
, p. 771 - 772 (2007/10/03)
An efficient ultrasound promoted novel direct conversion of nitro compounds to N-(tert-butoxycarbonyl) amines and N-(ethoxycarbonylamines) is achieved using Sn-NH4Cl for the first time.
Synthesis and Some Reactions of 2-(2-Aminoanilino)cycloheptapyrroles: Leading to 5H-Cycloheptapyrrolobenzodiazepine, a Novel 20? Antiaromatic System, and Cycloheptapyrrolobenzimidazoles
Abe, Noritaka,Ishikawa, Naomi,Hayashi, Takashi,Miura, Yoshiaki
, p. 1617 - 1622 (2007/10/02)
2-Chlorocycloheptapyrroles reacted with o-phenylenediamine to give 2-(2-aminoanilino)cycloheptapyrroles (2a,b) in good yields.Treatment of 2a and 2b with polyphosphoric acid afforded cycloheptapyrrolobenzimidazole (4a) in good yields.Treatment of 2b with acids gave 6-(ethoxycarbonyl) derivatives (4b) of 4a and 12H-5,13-dihydrocycloheptapyrrolobenzodiazepin-12-one (5).Compound 5 was methylated with methyl iodide in the presence of DBU to give 5H-12-methoxycycloheptapyrrolobenzodiazepine, a novel 20? antiaromatic system.Treatment of 2b with sodium ethoxide gave 4b and 2H-1-(cycloheptapyrrol-2-yl)-1,3-dihydrobenzimidazol-2-one (7a).Compound 5 rearranged to 7a in the refluxing sodium ethoxide-ethanol solution.Reactions of 2a and 2b with triethyl orthoformate gave corresponding 1-(cycloheptapyrrol-2-yl)benzimidazoles.Reactions of 2a and 2b with acetic anhydride are also mentioned.
