88554-07-8Relevant academic research and scientific papers
Metal Complexes with Macrocyclic Ligands. Part XXXVIII. Steric Effects in the Copper(II) and Nickel(II) Complexes with Tetra-N-alkylated 1,4,8,11-Tetraazacyclotetradecanes
Oberholzer, Martin R.,Neuburger, Markus,Zehnder, Margareta,Kaden, Thomas A.
, p. 505 - 513 (1995)
A series of tetra-N-alkylated 1,4,8,11-tetraazacyclotetradecanes have been synthesized and their complexation potential towards Ni2+ and Cu2+ studied.In the case of sterically demanding alkyl substituents, such as i-Pr, PhCH2, or 2-M
A direct method for the N-tetraalkylation of azamacrocycles
Counsell, Andrew J.,Jones, Angus T.,Todd, Matthew H.,Rutledge, Peter J.
, p. 2457 - 2461 (2016/12/09)
An efficient protocol for the direct synthesis of N-tetraalkylated derivatives of the azamacrocycles cyclam and cyclen has been developed, using a partially miscible aqueous-organic solvent system with propargyl bromide, benzyl bromide, and related halide
1,4,8,11-Tetraazabicyclo[9.3.1]pentadecanes: Synthesis and Use of a New Strategy for the Selective cis -N4,N8-Difunctionalization of Cyclam Derivatives
Guilard, Roger,Bessmertnykh, Alla G.,Beletskaya, Irina P.
, p. 1190 - 1192 (2007/10/03)
A new efficient route to derivatives of 1,4,8,11-tetraazabicyclo[9.3.1]pentadecane 2 and their use in a procedure of selective N4,N8-difunctionalization of cyclam is reported.
Cation-binding Properties of New Armed Macrocyclic Host Molecules and Their Applications to Phase-transfer Reactions and Cation Membrane Transport
Tsukube, Hiroshi,Takagi, Kentaro,Higashiyama, Tatsuo,Iwachido, Tadashi,Hayama, Naomi
, p. 1033 - 1038 (2007/10/02)
A new series of armed macrocyclic host molecules was prepared; the macrocycles were characterized by parent macrocyclic ligands and cation-ligating donor arms.Their cation-binding properties were significantly controlled by co-ordination characteristics od their parent macro-ring and donor sidearms, and chemical modifications of their basic structures provided interesting chemical functions.For example, a furan-bearing double armed crown ether showed high catalytic activity in some phase-transfer reactions; a multi-armed cyclam containing furan-oxygen atoms discriminated NH4(1+) ion from K(1+) and other related cations effectively.Such chemical functions of these armed macrocycles were not attained with common crown ethers and cryptands.Hence, further variations of ligand structures may lead to a new series of host molecules showing unique and important chemical functions.
Proton-assisted Transport of Amino Acid and Related Polycarboxylate Anions via Polyammonium Macrocycles
Tsukube, Hiroshi
, p. 615 - 620 (2007/10/02)
Anion-binding and transport properties of polyamine macrocycles have been examinated by liquid-liquid extraction and liquid membrane transport experiments.Some lipophilic polyamine macrocycles showed excellent transport properties, especially for polycarb
Specific Cation-transport Abilities of New Macrocyclic Polyamine Compounds
Tsukube, Hiroshi
, p. 970 - 971 (2007/10/02)
The lipophilic macrocyclic polyamine carriers (1) and (2) mediated efficient ammonium-cation transport with characteristic properties not observed in previously reported crown ether systems.
