By Alan R. Katritzky
The definitive serial within the box -- on account that 1960. * offers up to date fabric on a quick transforming into and hugely topical topic zone * includes the most recent examine masking a large choice of heterocyclic issues * Written via prime experts and designed as a instruction manual for college kids and and educational researchers. summary: The definitive serial within the box -- because 1960. * offers updated fabric on a quick turning out to be and hugely topical topic region * includes the most recent learn masking a large choice of heterocyclic issues * Written by way of top experts and designed as a guide for college kids and and educational researchers
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Extra resources for Advances in Heterocyclic Chemistry
His eloquent use of transition metal hybri dization, predesigned, coordinating molecular architectures, and volumi nous work to categorize, define, synthesize, and bring to fruition utilitarian building blocks and supramolecular constructs have markedly influenced this burgeoning field. Toward these ends, Stang et al. has developed a wide range of eloquent architectures with esthetic and utilitarian appeal employing pyr idine—metal connectivity for self-assembly. In a report in 1997 (97JA4777), a bispyridinyl ketone (Scheme 22) and a 4,40 -bipyridine (donors) were employed as a corner unit and linear linker units, respectively, in the initial self-assembly of hexameric motifs with bisPt(II) (acceptor) com plexes 59 and 60.
Other unique bis(terpyridine)-building blocks have been reported, such as the 5-substituted 1,3-[bis(2,20 :60 ,200 -terpyridin-40 -ylethynyl)]ben zenes (06DMP413). A Pd-catalyzed cross-coupling procedure was employed to build these elongated, functionalized bis(terpyridine) ligands that were readily self-assembled to afford the corresponding hexameric metallomacrocycles possessing an inner void diameter of ˚ . Starting with the appropriate 1,3-dibromobenzene (Scheme 40), 24 A TMS-acetylene was coupled [Pd(dba)2, CuI, Et3N] to give the diacetylene 155 that was subsequently coupled to terpyridine triflate 156 (91JOC4815) via a Pd(0) cross-coupling procedure to afford the desired elongated bisterpyridine monomer 157.
An electrochemical analysis of the Ru-Fe-based structures was reported and compared with that of all the Ru(II) and Fe(II) hexamers; the reversible redox characteristics of this family of metallomacrocycles suggested their suitability for further study as candidates for electron storage devices. Notably, a series of oligomeric < tolyl ½bisðterpyridinyl Þ n RuIInÀ1 > complexes, where n= 2—6, possessing metal-free terpyridine end groups, was formed and isolated in a single-pot reaction (06EJO4193); UV-Vis, CV, MS, and NMR data for the oligomers are compared and contrasted to that of the corresponding hexamer 150 (Scheme 38) that was also isolated from the reaction.