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- W2092125372 abstract "Cross-condensation of 6,6′-diamino-2,2′-bipyridine (3) with 6,6′-dibromo-2,2′-bipyridine (2) gave an azamacrocycle containing two aza-bridged 2,2′-bipyridine moieties, 3H,10H-tetrapyrido[2,1,6-de:2′,1′,6′-gh:2″,1″,6″-kl:2‴,1‴,6‴-na][1,3,5,8,10,12]hexa-azacyclotetradecine (1), in high yield without metal template. Furthermore, compound (1) could be obtained in >90% yield directly from 6,6′-dibromo-2,2′-bipyridine (2) by heating the latter with ammonia in an autoclave without metal template. N-Alkylation of compound (1) with n-hexyl bromide in the presence of tetra-n-butylammonium bromide gave exclusively the mono-N-n-hexyl derivative of (1), 10-hexyl-3H,10H-tetrapyrido[2,1,6-de:2′,1′,6′-gh:2″,1″,6″-kl:2‴,1‴,6‴-na][1,3,5,8,10,12]hexa-azacyclotetradecine (4). Evidence for the tautomerism of the mono-n-hexyl derivative (4) was provided by the 1H n.m.r. and absorption spectra." @default.
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- W2092125372 date "1984-01-01" @default.
- W2092125372 modified "2023-09-26" @default.
- W2092125372 title "Non-template syntheses and monoalkylation of an aza macrocycle containing 2,2′-bipyridine" @default.
- W2092125372 doi "https://doi.org/10.1039/p19840002023" @default.
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