55442-00-7 Usage
General Description
(S)-2,2'-BINAPHTHYL-14-CROWN-4 is a chemical compound that belongs to the family of crown ethers, which are macrocyclic polyethers with a crown-shaped molecular structure. This particular compound features a 14-membered crown ring with two 2,2'-binaphthyl units attached to it. Crown ethers are known for their ability to selectively bind metal ions, and (S)-2,2'-BINAPHTHYL-14-CROWN-4 is particularly effective at chelating alkali and alkaline earth metal ions. It is commonly used in organic synthesis, catalysis, and as a sensor for metal ions. Additionally, its chiral nature makes it a valuable tool for asymmetric synthesis and separation processes.
Check Digit Verification of cas no
The CAS Registry Mumber 55442-00-7 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 5,5,4,4 and 2 respectively; the second part has 2 digits, 0 and 0 respectively.
Calculate Digit Verification of CAS Registry Number 55442-00:
(7*5)+(6*5)+(5*4)+(4*4)+(3*2)+(2*0)+(1*0)=107
107 % 10 = 7
So 55442-00-7 is a valid CAS Registry Number.
55442-00-7Relevant articles and documents
Synthesis, Rapid Resolution, and Determination of Absolute Configuration of Racemic 2,2'-Binaphthyldiyl Crown Ethers and Analogues via β-Cyclodextrin Complexation
Armstrong, Daniel W.,Ward, Timothy J.,Czech, Anna,Czech, Bronislaw P.,Bartsch, Richard A.
, p. 5556 - 5559 (2007/10/02)
Twenty racemic and four diastereomeric 2,2'-binaphthyldiyl crown ethers and analogues were synthesized.Chiral interactions between these compounds and immobilized β-cyclodextrin were examined.Thirteen of the enantiomeric pairs and two of the diastereomers were successfully resolved.It was found that relatively small changes in the structure of these compounds could have large effects on chiral recognition.In general, the (-)-S enantiomers formed stronger inclusion complexes with β-cyclodextrin than did the (+)-R enantiomers.
