188303-41-5

Upstream product

• 171753-73-4 (2S,2'S)-oxybis(propane-2,1-diyl)bis(4-methylbenzenesulfonate) 
• 199991-84-9 C₃₆H₄₆O₈ 
• 199991-74-7 2-((S)-2-Benzyloxy-1-methyl-ethoxy)-propan-1-ol 
• 94199-20-9 (S)-(+)-2-phenyl-2-(tetrahydropyranyloxy)ethanol 
• 72652-35-8 1,3-bis-bromomethyl-2,5-dimethoxy-benzene 
• 199991-77-0 2,4-dimethyl-3-oxapentane-1,5-diol 
• 188303-40-4 (S)-2-[3-((S)-2-Hydroxy-2-phenyl-ethoxymethyl)-2,5-dimethoxy-benzyloxy]-1-phenyl-ethanol 

Downstream Products

• 188303-42-6 (5S,8S,10S,13S)-19-Methoxy-8,10-dimethyl-5,13-diphenyl-3,6,9,12,15-pentaoxa-bicyclo[15.3.1]henicosa-1⁽²⁰⁾,17⁽²¹⁾,18-trien-21-ol 
• 199992-19-3 (5S,8S,10S,13S)-8,10-Dimethyl-5,13-diphenyl-3,6,9,12,15-pentaoxa-bicyclo[15.3.1]henicosa-1⁽²⁰⁾,17-diene-19,21-dione 

Relevant academic research and scientific papers

Preparation of optically active azophenolic crown ethers containing 1-phenylethane-1,2-diol and 2,4-dimethyl-3-oxapentane-1,5-diol as a chiral subunit: Temperature-dependent enantiomer selectivity in the complexation with chiral amines

With (2S,4S)-2,4-dimethyl-3-oxapentane-1,5-diol and (S)- or (R)-1-phenylethane-1,2-diol as chiral subunits, optically active azophenolic crown ethers (S,S,S,S)-1, (R,S,S,R)-2, (S,S,S,S)-3 and (R,S,S,R)-4 possessing two phenyl and two methyl substituents together with the p-(2,4-dinitrophenylazo)phenol moiety have been prepared in enantiomerically pure forms. Temperature-dependent enantiomer selectivity in the complexation of these crown ethers with chiral amines has been studied by the UV-visible spectroscopic method in chloroform and from the observed association constants, thermodynamic parameters for the complexation have been calculated.

Preparation of homochiral azophenolic crown ethers containing 1-phenylethane-1,2-diol and 2,4-dimethyl-3-oxapentane-1,5-diol as a chiral subunit: Enantiomer recognition behaviour towards chiral 2-aminoethanol derivatives

Enantiomerically pure azophenolic crown ethers 1-4 containing (S)- or (R)-1-phenylethane-1,2-diol moieties and (2S,4S)-2,4-dimethyl-3-oxapentane-1,5-diol moiety as a chiral subunit were prepared; crown ethers (S,S,S,S)-1 showed high chiral recognition behaviour in complexation with 2-substituted 2-aminoethanol derivatives.