72638-74-5

Basic information

• Product Name: cis-syn-cis-2,3,11,12-Tetraphenyl-1,4,7,10,13,16-hexaoxacyclooctadecan
• Synonyms: cis-syn-cis-2,3,11,12-Tetraphenyl-1,4,7,10,13,16-hexaoxacyclooctadecan
• CAS NO: 72638-74-5
• Molecular Weight: 568.71
• Mol File: 72638-74-5.mol
• Article Data: 4

Chemical Properties

• CAS DataBase Reference: cis-syn-cis-2,3,11,12-Tetraphenyl-1,4,7,10,13,16-hexaoxacyclooctadecan(CAS DataBase Reference)
• NIST Chemistry Reference: cis-syn-cis-2,3,11,12-Tetraphenyl-1,4,7,10,13,16-hexaoxacyclooctadecan(72638-74-5)
• EPA Substance Registry System: cis-syn-cis-2,3,11,12-Tetraphenyl-1,4,7,10,13,16-hexaoxacyclooctadecan(72638-74-5)

Safety Data

• Hazardous Substances Data: 72638-74-5(Hazardous Substances Data)

Upstream product

• 80158-28-7 (1R*,2S*)-2,2'-(1,2-Diphenylethandiyldioxy)diethanol 
• 80158-27-6 (+/-)-2,2'-(1,2-diphenyl-1,2-ethanedioxy)-diethanol 
• 134-81-6 benzil 
• 98769-47-2 (+/-)-(1,2-diphenyl-1,2-ethanedioxy)-diacetic acid 
• 98769-48-3 meso-(1,2-diphenyl-1,2-ethanedioxy)-diacetic acid 
• 655-48-1 DL-1,2-diphenylethane-1,2-diol 
• 579-43-1 (1S,2R)-1,2-diphenylethane-1,2-diol 
• 119-53-9 2-hydroxy-2-phenylacetophenone 
• 6315-52-2 1,2-bis-tosyloxyethane 
• 4721-02-2 (Z)-stilbenediol 
• 78502-13-3 2,3,11,12-Tetraphenyl-2,3,11,12-didehydro<18>krone-6 

Relevant articles and documents

SYNTHESIS OF (-)-2S,3S,11S,12R-2,3,11,12-TETRAPHENYLCROWN-6

The synthesis of (-) 2S,3S,11S,12R-2,3,11,12-tetraphenyl-crown-6 from (-)-1S,2S-hydrobenzoin and meso-hydrobenzoin is described.Chemical shifts and vicinal coupling constants of the benzylic protons in the 2S,3S and 11S,12R substructures in the free ligands and in complexes with KSCN and 1-phenylethylammonium bromides and a brief discussion of the related conformational changes are also presented.A detailed procedure for the resolution of racemic hydrobenzoin is given.

Synthesis and Complex Formation of Phenyl- and (4-Phenylbutyl)-substituted Crown Ethers

A number of phenyl and (4-phenylbutyl) derivates of 18-C-6 and 24-C-8 have been prepared: tetraphenyl-diene-18-crown-6 (TPDE-18-C-6), tetraphenyl-18-crown-6 (TP-18-C-6), tetraphenyldiene-24-crown-8 (TPDE-24-C-8), tetraphenyl-24-crown-8 (TP-24-C-8), and bis(4-phenylbutyl)-18-crown-6 (BPB-18-C-6).The ring formation reactions have been carried out by phase-transfer catalysis.All compounds are solids at room temperature except for the liquid BPB-18-C-6 wich represents a mixture of isomers.The syn- and anti-isomers of TP-18-C-6 and TP-24-C-8 have been isolated and identified by x-ray diffraction.The complex formation constants, determined by d. c. polarography in methanol/benzene (80:20 v/v), depend not only on the ring size but also on the number and kind of substituents as well as their steric arrangement.The derivatives of 18-C-6 form the most stable complexes with K+, Sr2+, Ba2+, and Pb2+.The derivatives of 24-C-8 prefer K+, Rb+, and Ba2+.