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Structural Development of Free or Coordinated 4′‐(4‐Pyridyl)‐2,2′:6′,2′′‐terpyridine Ligands through N‐Alkylation: New Strategies for Metallamacrocycle Formation
Author(s) -
Constable Edwin C.,
Dunphy Emma L.,
Housecroft Catherine E.,
Kylberg William,
Neuburger Markus,
Schaffner Silvia,
Schofield Emma R.,
Smith Christopher B.
Publication year - 2006
Publication title -
chemistry – a european journal
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.687
H-Index - 242
eISSN - 1521-3765
pISSN - 0947-6539
DOI - 10.1002/chem.200600069
Subject(s) - terpyridine , alkylation , chemistry , combinatorial chemistry , stereochemistry , metal , organic chemistry , catalysis
A series of N‐alkylated derivatives of [Ru(pytpy) 2 ] 2+ (pytpy=4′‐(4‐pyridyl)‐2,2′:6′,2′′‐terpyridine) has been synthesised and characterised. These include both model and functionalised complexes that complement previously reported iron( II ) analogues. Reaction of [Ru(pytpy) 2 ] 2+ with bis[4‐(bromomethyl)phenyl]methane leads to the formation of a [2+2] ruthenamacrocycle. Related ferramacrocycles could not be accessed by this route, and instead were prepared in two steps by first reacting bis[4‐(bromomethyl)phenyl]methane or 4,4′‐bis(bromomethyl)biphenyl with two equivalents of pytpy, and then treating the resulting bis(N‐alkylated) product with iron( II ) salts.