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Crowned dopa's, their dimers, cyclodimers and polymers: Synthesis and cation complexation

✍ Scribed by Michele Berthet; Etienne Sonveaux

Publisher
Wiley (John Wiley & Sons)
Year
1986
Tongue
English
Weight
838 KB
Volume
25
Category
Article
ISSN
0006-3525

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✦ Synopsis

Optically pure protected ~-[3,4-(1,4,7,10,13pentaoxatridecamethylene) phenyl] alanine, its dipeptide, diketopiperazine and homopolymer, protected ~-[3,4-t1,4,'7,10,13,16hexaoxahexadecamethylene) phenyl] alanine and its polymer have been synthesized and characterized. These crown ether derivatives complex the potassium and ammonium cations as well as protonated leucine and glycine in tetrahydrofuran and methanol. They are also phase-transfer agents. The cooperativity of the crown units was studied in detail for the dimeric ligands.

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## Synthesis and Characterization of Crown Ether-Containing N-Phosphorylated Thioureas RC(S)NHP(O)(OiPr) 2 (R = 1-aza-15-crown-5, 1-aza-12-crown-4) and Their Co(II) and Ni(II) Complexes