Synthetic Route of 108-47-4, The reaction rate of a catalyzed reaction is faster than the reaction rate of the uncatalyzed reaction at the same temperature.108-47-4, Name is 2,4-Dimethylpyridine, molecular formula is C7H9N. In a Article£¬once mentioned of 108-47-4
Intramolecular Photocyclization of N-<(2-Haloaryl)methyl>pyridinium and N-(Arylmethyl)-2-halopyridinium Salts
Various N-<(2-haloaryl)methyl>pyridinium, N-(arylmethyl)-2-halopyridinium and N-(2-halobenzyl)isoquinolinium salts have been synthesized and their intramolecular photocyclization reactions studied.Upon irradiation the aqueous solution of N-<(2-haloaryl)methyl>pyridinium and N-arylmethyl-2-halopyridinium salts 1, 2 were cyclized to give isoindolium salts.In contrast to the pyridinium salts 1, 2, the aqueous solution of N-(2-halobenzyl)isoquinolinium salts 3 appear not to undergo photocyclization.N-Benzyl-2-chloropyridinium salts 1c is more reactive than N-(2-chlorobenzyl)pyridinium salt 1a in the photocyclization.N-(2-Chlorobenzyl)-2-chloropyridinium salt 1d is three times more reactive than 1c.A mechanism of ?-complex formation of the halogen moiety of the pyridinium ring with the phenyl ring is suggested for the reactive pyridinium salt.The triplet energy of the isoquinolinium salts 3 is too low to photocyclize.
A reaction mechanism is the microscopic path by which reactants are transformed into products. Each step is an elementary reaction. In my other articles, you can also check out more blogs about 108-47-4
Reference£º
Chiral nitrogen ligands in late transition metal-catalysed asymmetric synthesis¡ªI. Addressing the problem of ligand lability in rhodium-catalysed hydrosilations,
Nitrogen-Containing Ligands for Asymmetric Homogeneous and Heterogeneous Catalysis