126128-29-8

Upstream product

• 79-08-3 bromoacetic acid 
• 106418-53-5 sym-hydroxyphenyldibenzo-16-crown-5 
• 100-58-3 phenylmagnesium bromide 
• 81633-82-1 sym-(keto)dibenzo-16-crown-5 

Downstream Products

• 214778-80-0 N-Benzyloxy-2-(4-phenyl-2,6,13,16,19-pentaoxa-tricyclo[18.4.0.0^7,12]tetracosa-1⁽²⁴⁾,7⁽¹²⁾,8,10,20,22-hexaen-4-yloxy)-acetamide 

Relevant academic research and scientific papers

Solvent extraction of radium with crown ether carboxylic acids

The capabilities of a series of 11 crown ether carboxylic acids with different hydrocarbon substituents have been evaluated for solvent extraction of radium in aqueous solutions. The extraction of radium proceeds from alkaline media into chloroform soluti

New Lariat Ether Carboxylic and Hydroxamic Acids: Synthesis and Lanthanide Ion Complexation

Twenty-six new lariat ether carboxylic and hydroxamic acids based upon dibenzo-13-crown-4, dibenzo-14-crown-4, dibenzo-16-crown-5 and dibenzo-19-crown-6 ring systems are synthesized and the solid-state structure for a dibenzo-19-crown-6 lariat ether hydroxamic acid is determined. The efficiency and selectivity for lanthanide ion extraction into chloroform by these proton-ionizable lariat ethers is strongly influenced by the crown ether ring size, lipophilic group attachment site and identity of the acidic function. In general, the lariat ether hydroxamic acids were more efficient and selective lanthanide ion extractants than the corresponding lariat ether carboxylic acids. The 1H nmr and ir binding studies indicate that both the macrocyclic polyether unit and the proton-ionizable group are involved in lanthanide ion complexation.