Detail of "5431-44-7"

Reference

Copper(II) Template Synthesis of a 20-Membered [1+1] Schiff Base Macrocycle and Nickel(II) Template Synthesis of a 40-Membered [2+2] Schiff Base Macrocycle from 2,6-Pyridinedicarboxaldehyde and 1,13-Diamino-4,7,10-trioxatridecane

Copper(II) Template Synthesis of a 20-Membered [1+1] Schiff Base Macrocycle and Nickel(II) Template Synthesis of a 40-Membered [2+2] Schiff Base Macrocycle from 2,6-Pyridinedicarboxaldehyde and 1,13-Diamino-4,7,10-trioxatridecane. Vance, Andrew L.; Alcock, Nathaniel W.; Busch, Daryle H.; Heppert, Joseph A. (Departments of Chemistry, University of Kansas, Lawrence, KS 66045, USA). Inorganic Chemistry, 36(22), 5132-5134 (English) 1997 American Chemical Society. CODEN: INOCAJ. ISSN: 0020-1669. DOCUMENT TYPE: Journal CA Section: 78 (Inorganic Chemicals and Reactions) Section cross-reference(s): 75 [CuL(OH2)Cl]PF6 (L = 20-membered [1+1] Schiff base macrocycle derived from 2,6-pyridinedicarboxaldehyde and 1,13-diamino-4,7,10-trioxatridecane) and [NiL1](PF6)2 (L1 = 40-membered [2+2] Schiff base macrocycle derived from 2,6-pyridinedicarboxaldehyde and 1,13-diamino-4,7,10-trioxatridecane) were prepd. by template reactions. These complexes show that large metal ion templates are not always required to produce large macrocycles. The crystal structure of the Ni complex was detd.

Isolation and conformation of a fully unsaturated nitrogen analog of 18-crown-6

Isolation and conformation of a fully unsaturated nitrogen analog of 18-crown-6. Bell, Thomas W.; Guzzo, Frieda (Dep. Chem., State Univ. New York Stony Brook, Stony Brook, NY 11794-3400, USA). J. Chem. Soc., Chem.In this article, certain chemicals are used. Some of their cas registry numbers are 5431-44-7 and 92055-52-2 Commun., (10), 769-71 (English) 1986. CODEN: JCCCAT. ISSN: 0022-4936. DOCUMENT TYPE: Journal CA Section: 28 (Heterocyclic Compounds (More Than One Hetero Atom)) Section cross-reference(s): 75 Reaction of o-C6H4(NH2)2 with pyridine-2,6-dicarboxaldehyde and Sr(O3SCF3)2 in MeCN, followed by cation exchange with excess KF.2H2O in MeCN and demetalation by treatment with excess 18-crown-6 gave the hexaaza macrocycle I. The structure of I was detd. by x-ray crystallog.; results were refined to an R value of 0.04 for 709 reflections. Spectral studies showed that I undergoes a conformational change on complexation. .