β Scribed by Abdellatif Boughriet; Claude Bremard; Michel Wartel
No coin nor oath required. For personal study only.
The chemically or electrochemically activated nitration by N,O, has been studied in sulfolane using Raman spectroscopy, electrochemical techniques and gas chromatography. The mechanistic aspects of this reaction are discussed, taking into account the various equilibria occurring in the N,O, solutions and the electrochemical and kinetic properties of oxygenated nitrogen compounds in aprotic media. Thus, whatever be the nature of the catalytic precursor used, it has heen shown that the promotion of the naphthalene nitration by N203 proceeds from an electrophilic attack of NO' concerted with N20., which is formed by the molecular dissociation of N203.
π SIMILAR VOLUMES
## Abtract -The electrochemical khsviour of 3qano-(or 3-carbamoyl-) I-methyl-(or bcnxyl) l+dibydropyridinm (4a, b) and the correspondiig 1, I'. 4.4' tetrahydro-4,4'-bipyridincs (St, b) or 1, 1'. 6,4'-tetrahydrobipyridins (6a, b) in DMF was investigated using ac and dc voltammetry, cyclic voltammet
6-(Triphenylphosphonio-3Π-cyclopentadienyl)-2,3,5-trihalocyclohexa-2,5-diene-1,4-diones (2) are a new class of phosphorus containing dyes that behave as weak bases. Mono-protonation occurs at the cyclopentadiene ring leading to three isomers as assessed by NMR. The kinetics of the protonation were s