Reactions of N-Heterocycles in Transition Metal Complexes

In this Section examples of other reactions, representative of the some of the elementary steps that are known or believed to occur during HDN after hydrogenation, are described. Of particular interest are the rather uncommon reactions leading to C-N bond activation and denitrogenation. 

REACTIONS OF COORDINATED PYRROLES, INDOLES, AND RELATED COMPONDS. 

As stated in Section 6.2.1 (p. 154), no examples ofr) (N) pyrrole complexes are known, and the corresponding analogues reported for indole are better described as Tl N-3H-indolenine species. Tlierefore the N-only coordination mode of intact Pyr or In does 

this is an interesting model for a possible way of adsorbing and hydrogenating indoles on solid catalysts at the early stages of HDN. Ti (N)-Indolyl complexes are activated toward protonation at the P-carbon atom, which transforms them into r (N)-indolenine derivatives (See e.g. Eq. 6.7) [33]. 

REACTIONS OE COORDINATED PYRIDINES, QUINOLINES, AND RELATED COMPOUNDS 

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Reactions of N-heterocycles in Transition Metal Complexes Related to HDN... 

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