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The use of tris(2-aminoethyl)amine in macrocyclization processes

โœ Scribed by Piotr Lipkowski; Daniel T. Gryko; Janusz Jurczak; Janusz Lipkowski


Publisher
Elsevier Science
Year
1998
Tongue
French
Weight
190 KB
Volume
39
Category
Article
ISSN
0040-4039

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โœฆ Synopsis


Reactions of tripodal amine I with tripodal esters 2 and 4, carried out in methanol under ambient conditions, afforded -as single products -tricyclic cryptands 3 and 5, respectively. Under the same conditions, the amine 1 reacted with dipodal esters 6 and 7 to give bis-macrocycles 9 and 10, respectively.


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A 2:2:1:6 molar ratio of Zn(ClO 4 ) 2 ร6H 2 O, tris(2-aminoethyl)amine (tren), Zn(ClO 4 ) 2 ร6H 2 O/Cu(ClO 4 ) 2 ร6H 2 O and NH 4 NCS in methanol-water solution mixtures affords homo-/heterobimetallic compounds of the type [Zn(tren)NCS] 2 [M(NCS) 4 ] (M = Zn, 1; M = Cu, 2) which have been characteri