Synthesis, characterization and cation-induced dimerization of new aza-crown ether-appended metalloporphyrins was written by Mikhalitsyna, Elena A.;Tyurin, Vladimir S.;Zamylatskov, Ilia A.;Khrustalev, Victor N.;Beletskaya, Irina P.. And the article was included in Dalton Transactions in 2012.Synthetic Route of C10H21NO4 This article mentions the following:
New metalloporphyrins bearing one or two aryl-aza-crown ether moieties at meso-positions were synthesized using a palladium catalyzed amination reaction and fully characterized by spectral techniques. X-ray structural data were presented for the zinc and copper complexes of mono-substituted aza-crown ether appended metalloporphyrins. UV-visible and 1H NMR spectroscopic studies showed that addition of K+ cations to a solution of monomeric aza-crowned porphyrins in CHCl3/MeOH led to cation-induced dimerization of these porphyrins, whereas addition of Na+ cations yielded a monomeric complex. Axial coordination of the exobidentate ligand (DABCO) to zinc complexes of aza-crowned porphyrins and following binding metal ions gave sandwich complexes with high stability constants In the experiment, the researchers used many compounds, for example, 1,4,7,10-Tetraoxa-13-azacyclopentadecane (cas: 66943-05-3Synthetic Route of C10H21NO4).
1,4,7,10-Tetraoxa-13-azacyclopentadecane (cas: 66943-05-3) belongs to ethers. Ethers are good solvents partly because they are not very reactive. Most ethers can be cleaved, however, by hydrobromic acid (HBr) to give alkyl bromides or by hydroiodic acid (HI) to give alkyl iodides. Ethers feature bent C–O–C linkages. In dimethyl ether, the bond angle is 111° and C–O distances are 141 pm. The barrier to rotation about the C–O bonds is low. The bonding of oxygen in ethers, alcohols, and water is similar. In the language of valence bond theory, the hybridization at oxygen is sp3.Synthetic Route of C10H21NO4
Referemce:
Ether – Wikipedia,
Ether | (C2H5)2O – PubChem