3002-77-5Relevant articles and documents
Synthesis of 1,10-phenanthrolines fused with bicyclo[3.3.0]octane and bicyclo[3.3.1]nonane frameworks
Visniakova,Zilinskas,Tumkevicius
, (2012)
Reactions of bicyclo[3.3.1]nonane-2,6-dione and bicyclo[3.3.0]octane-3,7- dione with 8-amino-7-quino-linecarbaldehyde under basic conditions led to fused nonplanar compounds with one or two 1,10-phenanthroline moieties. The novel heterocyclic systems bicy
N ortho acyl substituted nitrogen-containing heterocyclic compound and process for preparing aminal iron (II) complexes thereof
-
Page/Page column 26-27, (2016/04/20)
Provided are a process for preparing an N ortho acyl substituted nitrogen-containing heterocyclic compound and an aminal iron (II) complex thereof, and the use of the complexes obtained by the process in an olefin oligomerization catalyst. The N ortho acyl substituted nitrogen-containing heterocyclic compound in the present invention is for example 2-acyl-1,10-phenanthroline or 2,6-diacetyl pyridine as shown in formula b, and the N ortho acyl substituted nitrogen-containing heterocyclic compound in the present invention is produced by a reaction of a precursor thereof in a substituted or unsubstituted nitrobenzene. Preferably the precursor shown in formula I in the present invention is produced by 1,10-phenanthroline reacting with trialkyl aluminum, or a halogenoalkyl aluminum RnAIXm, or a substituted or unsubstituted benzyl lithium Ph′CH2Li, followed by hydrolysis. The preparation method provided in the present invention has a few synthetic steps, an easy process, a low toxic effect, and reduces the preparation costs of the catalyst, and has a promising outlook in the industrial application.
Steric vs electronic effects and solvent coordination in the electrochemistry of phenanthroline-based copper complexes
Magni, Mirko,Colombo, Alessia,Dragonetti, Claudia,Mussini, Patrizia
, p. 324 - 330 (2014/11/12)
The present exhaustive electrochemical study proposes a rationalization of the redox properties of 1,10-phenanthroline-based copper complexes as a function of i) ligand molecular structure, evidencing the competition between electronic and steric effects of alkyl/aryl substituents, and ii) nature of working medium in terms of both solvent and supporting electrolyte anion. Occupancy of the 2 and 9 positions of the phenanthroline is a powerful tool to modulate the oxidation potentials of this family of complexes in a wide potential range. Solvent molecules play a key role in the metal-centred oxidative electron transfer process (unlike the optical electron transition), acting as ancillary ligands that allow the transition between tetrahedral four-coordinated Cu(I) state to tetragonal five-coordinated Cu(II). Actually clear evidences of the entry of one solvent molecule in the inner coordination sphere of the complexes are proved by the Kolthoff and Lingane method. Proof of ionic couple formation is also found.