69502-29-0

Basic information

• Product Name: 2,4,8,11,14,17,20,23-Octaoxaspiro[5.18]tetracosane, 3-phenyl-
• CAS NO: 69502-29-0
• Molecular Formula: C22H34O8
• Molecular Weight: 426.507
• Mol File: 69502-29-0.mol
• Article Data: 3

Chemical Properties

• CAS DataBase Reference: 2,4,8,11,14,17,20,23-Octaoxaspiro[5.18]tetracosane, 3-phenyl-(CAS DataBase Reference)
• NIST Chemistry Reference: 2,4,8,11,14,17,20,23-Octaoxaspiro[5.18]tetracosane, 3-phenyl-(69502-29-0)
• EPA Substance Registry System: 2,4,8,11,14,17,20,23-Octaoxaspiro[5.18]tetracosane, 3-phenyl-(69502-29-0)

Safety Data

• Hazardous Substances Data: 69502-29-0(Hazardous Substances Data)

Upstream product

• 2425-41-4 5,5-dihydroxymethyl-2-phenyl-1,3-dioxane 
• 5197-65-9 1,14-dichloro-3,6,9,12-tetraoxatetradecane 
• 41024-91-3 penta(ethylene glycol) bis(p-toluenesulfonate) 

Downstream Products

• 86619-01-4 18,18-bis(4-toluenesulfonyloxymethyl)-1,4,7,10,13,16-hexaoxacyclononadecane 
• 108366-90-1 18-Benzyloxymethyl-18-(2-methoxy-ethoxymethyl)-1,4,7,10,13,16-hexaoxa-cyclononadecane 
• 86619-00-3 18-(hydroxymethyl)-18-(benzyloxymethyl)-1,4,7,10,13,16-hexaoxacyclononadecane 

Relevant articles and documents

Chemistry of crown ethers XIX. Functionalized crown ethers for the solubilization of barium sulfate

The use of seawater as injection fluid in oil-producing formations often leads to blocking of the wells as a result of barium sulfate-scale formation.Macrocylic complexants specifically designed to solubilize barium sulfate efficiently into water have been synthesized and their BaSO4-solubilizing capacities have been determined.The stability of barium complexes of macrocyclic polyethers can be greatly increased by the introduction of flexible side-chains containing anionic groups.Most of newly synthesized complexants, based mainly on diaza-18-crown-6, give very stable complexes.However, many o f them are extremely insoluble in water.Only bis(carboxymethyl)diaza-18-crown-6, bis(phosphonomethyl)diaza-18-crown-6 and, to a lesser extent, bis(dicarboxymethyl)diaza-18-crown-6 and bisdiaza-18-crown-6 are efficient solubilizers of BaSO4 in water.

Polytopic Cation Receptors. 2. Synthesis and Selective Complex Formation of Spiro-Linked "Multiloop Crown Compounds"

A new type of crown compound (1-10) featuring a spiro-linked assembly of two to four individual macrorings differing in ring size, rigidity, and donor characteristics is synthesized.Syntheses were achieved by means of high-dilution techniques and blocking/deblocking procedures beginning with pentaerythritol as the basic building block.The ability of the new ligands ("multiloop crown compounds") to selectively form crystalline polyhomonuclear/heteronuclear complexes is studied.It is found that the symmetrically looped molecules (1a-c, 4a, 6, 7d) can incorporate two orthree identical metal cations well matched in their diameter (Li+, Na+, K+, Ca2+, Ba2+).Cations which are too large to fit into the crown rings of 1a-c complex in a sandwich-like manner; those which are too small effect a high hydration in their complexes.Asymmetrical 1d and 9 allow the common uptake of different metal ions, e.g., a combination of Li+ and Ba2+ or of 2K+ and Co2+.The specific occupation of the different subrings is discussed.Ligand 1b is shown to discriminate Ca2+ from Na+; 1c and 6 preferentially complex Ba2+ from a Ba2+/K+ mixture.Thus, the new ligands act as manifold selective cation receptors, corresponding to the specification of their binding compartments.