cas 107971-06-2, 5-CarbaMoyl-1-Methyl-2-picoliniuM Iodide

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NMR Properties and Synthesis of Ring-methylated 1,4-Dihydronicotinamides and the Corresponding Pyridinium Salts. Correlation of NMR with Ab Initio STO-3G Results
The synthesis of a series of ring-methylated 1-alkyl-1,4-dihydronicotinamides and the corresponding pyridinium salts is described.Their NMR properties involving aromatic-ring-shielding anisotropy, due to ring current effects, are discussed and compared with electron populations calculated from STO-3G results.
Bossaerts, Jan D.,Dommisse, Roger A.,Alderweireldt, Frank C.,Geerlings, Paul
p. 2360 - 2384
(2007/10/02)

The use of immobilized enzymes in organic synthesis. Part 6. Oxidation of 1-alkyl-3-carbamoylpyridinium chlorides by rabbit liver aldehyde oxidase
A method is described for the oxidation of some 1-alkyl-3-carbamoylpyridinium chlorides by reaction with immobilized rabbit liver aldehyde oxydase.With the 1-methyl-, 1-ethyl- and 1-n-propyl derivatives, only the 1-alkyl-1,6-dihydro-6-oxo-3-pyridinecarboxamides have been obtained, but with the t-Bu analogue the corresponding 4-oxo compound was found as single product.The i-Pr derivative gave rise to a mixture of the corresponding 4- and 6-oxo compounds.From the kinetic data some information has been acquired with respect to the enzyme active-site environment and the binding of the substrates to the enzyme.
Angelino, S.A.G.F.,Buurman, D.J.,Plas, H.C. van der,Mueller, F.
p. 342 - 346
(2007/10/02)