Aromatic Bromination in Concentrated Nitric Acid
نویسندگان
چکیده
منابع مشابه
Electrophilic Aromatic Substitution of Catechins: Bromination and Benzylation
Relative yields of C-6, C-8. and C-6 and C-8 substituted catechins obtained from the reaction of (+ )-catechin or 3' 4',57-tetra-O-methvl-( + )-catechin with pyridinium hydrobromide-perbromide, bromine. p-hydroxybenzyl al~oh~I, or o-hydroxybenZyI alcohol showed differing selectivities depending upon the electrophile used. Ratios of C-6 to C-8 substituted products were 1 : 1.2 for the reaction o...
متن کاملNH4Br – Br2 Catalysed Oxidative Bromination of Aromatic Compounds
A facile, efficient, simple, environmentally safe, regioselective, controllable and economical method for the oxybromination of aromatic compounds using NH4Br-Br2 system. The electrophilic substitution of bromine generated in situ from NH4Br as a bromine source and molecular bromine as an oxidant.
متن کاملNitric Acid Decomposition Kinetics in Mixed Acid and their Use in the Modelling of Aromatic Nitration
Nitric acid decomposition in mixed acid (an aqueous mixture of nitric and sulfuric acids) was studied from a chemical and a kinetic point of view. The study was focused on the behavior of the reactive mixture in an open system in which the gas formed through the decomposition process can leave the vessel. The reaction network, through which the system could develop, depending on the chemical co...
متن کاملStructural investigation of Pd(II) in concentrated nitric and perchloric acid solutions by XAFS.
XAFS spectra of palladium(II) in concentrated HNO3/HClO4 acid mixtures have been recorded and analyzed. Structural parameters of the Pd(H2O)4(2+) complex and the mixed nitric Pd(NO3)2(H2O)2 complex, for the first time, were determined by the XAFS method. For pure 5 M HClO4 and for mixtures (0-0.3 M HNO3), the XAFS spectra of the 0.02 M Pd solutions are indeed very similar and originated from fo...
متن کاملX-ray snapshot observation of palladium-mediated aromatic bromination in a porous complex.
Pd-mediated aromatic bromination is intriguing to synthetic and organometallic chemists due to both its synthetic utility and, more importantly, a proposed mechanism involving an uncommon Pd(IV)/Pd(II) catalytic cycle. Here, we report an X-ray snapshot observation of a Pd reaction center during a Pd-mediated aromatic bromination in a single crystal of a porous coordination network crystalline s...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
ژورنال
عنوان ژورنال: Open Journal of Synthesis Theory and Applications
سال: 2014
ISSN: 2168-1244,2168-1252
DOI: 10.4236/ojsta.2014.32003