Intramolecular cyclization reactions in haloalkyl-cobalt complexes with macrocyclic equatorial ligands
Summary: Organocobalt complexes containing axial haloalkyl groups afford metallacycles of different size by N or O alkylation of the macrocyclic equatorial ligands. The reaction mechanism involves the intra-molecular nucleophilic attack of a negatively charged atom of the equatorial ligand on the ax...
| Permalink: | http://skupni.nsk.hr/Record/nsk.NSK01000734645/Details |
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| Matična publikacija: |
Croatica chemica acta 82 (2009), 2 ; str. 455-461 |
| Glavni autor: | Dreos, Renata (-) |
| Ostali autori: | Randaccio, Lucio (-), Siega, Patrizia, Vrdoljak, Višnja |
| Vrsta građe: | Članak |
| Jezik: | eng |
| Predmet: | |
| Online pristup: |
Croatica Chemica Acta |
| LEADER | 01978caa a2200301 ir4500 | ||
|---|---|---|---|
| 001 | NSK01000734645 | ||
| 003 | HR-ZaNSK | ||
| 005 | 20130430093547.0 | ||
| 007 | ta | ||
| 008 | 100426s2009 ci ||| ||eng | ||
| 035 | |9 (HR-ZaNSK)737267 | ||
| 035 | |a (HR-ZaNSK)000734645 | ||
| 040 | |a HR-ZaNSK |b hrv |c HR-ZaNSK |e ppiak | ||
| 042 | |a croatica | ||
| 080 | |a 54 |2 MRF 1998. | ||
| 100 | 1 | |a Dreos, Renata | |
| 245 | 1 | 0 | |a Intramolecular cyclization reactions in haloalkyl-cobalt complexes with macrocyclic equatorial ligands / |c Renata Dreos, Lucio Randaccio, Patrizia Siega, and Višnja Vrdoljak. |
| 300 | |b Ilustr. | ||
| 504 | |a Bibliografija: 32 jed | ||
| 520 | 8 | |a Summary: Organocobalt complexes containing axial haloalkyl groups afford metallacycles of different size by N or O alkylation of the macrocyclic equatorial ligands. The reaction mechanism involves the intra-molecular nucleophilic attack of a negatively charged atom of the equatorial ligand on the axial XCH2 haloalkyl group with simultaneous detachment of a halide ion, X−. In imino/oxime and amino/oxime derivatives, the generation of the negatively charged nitrogen requires the abstraction of a proton and the reaction occurs only in alkaline medium. In bis(dimethylglioximato) and Schiff base complexes, a negatively charged oxygen is present in the equatorial ligand and the reaction occurs even in neutral medium. Three-, six- and seven- membered metallacycles are obtained, with the common feature that the Co–C bond is shorter and more resistant toward homolysis than in parent complexes or in closely related derivatives | |
| 653 | 0 | |a Makrociklički ekvatorijalni ligand |a Kobalt |a Ciklizacija | |
| 700 | 1 | |a Randaccio, Lucio | |
| 700 | 1 | |a Siega, Patrizia | |
| 700 | 1 | |a Vrdoljak, Višnja | |
| 773 | 0 | |t Croatica chemica acta |x 0011-1643 |g 82 (2009), 2 ; str. 455-461 |w nsk.(HR-ZaNSK)000001621 | |
| 981 | |b B02/09 | ||
| 998 | |a Luko100426 |c vol2o130430 | ||
| 856 | 4 | 2 | |u http://hrcak.srce.hr/cca |y Croatica Chemica Acta |