Synthesis and structural studies of 5,12-Dioxocyclams capped by 4-Substituted pyridines across the amine nitrogens doi:10.1021/jo0301393. Achmatowicz, M., Hegedus, L. S, & David, S. Journal of Organic Chemistry, 68(20):7661–7666 ST – Synthesis and Structural Studies o, 2003.
Synthesis and structural studies of 5,12-Dioxocyclams capped by 4-Substituted pyridines across the amine nitrogens doi:10.1021/jo0301393 [link]Paper  doi  abstract   bibtex   
A series of 4-substituted pyridine-capped 5,12-dioxocyclams was synthesized and fully characterized. The 4-substituent varied from electron-withdrawing groups (NO2, NO, CN) to electron-donating groups (NHCbz, NH2). The most versatile substituent was the 4-bromo group, which could be replaced by a variety of groups using Stille, Sonogashira, or BuchwaldHartig palladium-catalyzed chemistry. Copper complexes of a majority of these capped dioxocyclams were synthesized and characterized as well.
@article{Achmatowicz2003,
	title = {Synthesis and structural studies of 5,12-{Dioxocyclams} capped by 4-{Substituted} pyridines across the amine nitrogens doi:10.1021/jo0301393},
	volume = {68},
	url = {http://pubs.acs.org/doi/abs/10.1021/jo0301393},
	doi = {10.1021/jo0301393},
	abstract = {A series of 4-substituted pyridine-capped 5,12-dioxocyclams was synthesized and fully characterized. The 4-substituent varied from electron-withdrawing groups (NO2, NO, CN) to electron-donating groups (NHCbz, NH2). The most versatile substituent was the 4-bromo group, which could be replaced by a variety of groups using Stille, Sonogashira, or BuchwaldHartig palladium-catalyzed chemistry. Copper complexes of a majority of these capped dioxocyclams were synthesized and characterized as well.},
	number = {20},
	journal = {Journal of Organic Chemistry},
	author = {Achmatowicz, Michal and Hegedus, Louis S and David, Scott},
	year = {2003},
	keywords = {\#nosource},
	pages = {7661--7666 ST -- Synthesis and Structural Studies o},
}

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