Computed Properties of C6H5NO3. The protonation of heteroatoms in aromatic heterocycles can be divided into two categories: lone pairs of electrons are in the aromatic ring conjugated system; and lone pairs of electrons do not participate. Compound: 5-Hydroxynicotinic acid, is researched, Molecular C6H5NO3, CAS is 27828-71-3, about From 5-hydroxynicotinic acid to nitrogenous (4 + 3)-cycloadducts. Author is Harmata, Alexander S.; Harmata, Michael.
The detailed three-step preparation of azabicyclo[4.3.1]decadienone I from 5-hydroxynicotinic acid, via a [4+3]-cycloaddition of a N-alkyl oxidopyridinium salt with a diene, was reported. Extension of the methodol. leading to other [4+3]-cycloaddition adducts was also discussed.
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Reference:
Chapter 1 An introduction to palladium catalysis,
Palladium/carbon catalyst regeneration and mechanical application method