150919-07-6

Basic information

• Product Name: 1,3,5,7-tetrakis(p-tert-butylbenzyl) ether of p-tert-butylcalix[8]arene
• Synonyms: 1,3,5,7-tetrakis(p-tert-butylbenzyl) ether of p-tert-butylcalix[8]arene
• CAS NO: 150919-07-6
• Molecular Weight: 1882.78
• Mol File: 150919-07-6.mol
• Article Data: 2

Chemical Properties

• CAS DataBase Reference: 1,3,5,7-tetrakis(p-tert-butylbenzyl) ether of p-tert-butylcalix[8]arene(CAS DataBase Reference)
• NIST Chemistry Reference: 1,3,5,7-tetrakis(p-tert-butylbenzyl) ether of p-tert-butylcalix[8]arene(150919-07-6)
• EPA Substance Registry System: 1,3,5,7-tetrakis(p-tert-butylbenzyl) ether of p-tert-butylcalix[8]arene(150919-07-6)

Safety Data

• Hazardous Substances Data: 150919-07-6(Hazardous Substances Data)

Upstream product

• 18880-00-7 1-(bromomethyl)-4-(1,1-dimethylethyl)benzene 
• 68971-82-4 5,11,17,23,29,35,41,47-octakis(tert-butyl)-49,50,51,52,53,54,55,56-octakis(hydroxy)calix[8]arene 

Relevant articles and documents

Tetra-O-benzylated Calixarenes with C4 Symmetry

The first procedure for the selective partial O-alkylation of p-tert-butylcalixarene 1 affording well defined products is described.Treatment of 1 with p-X-benzyl bromides (X = H, Me, tert-Bu, NO2, CN) and K2CO3 in THF/DMF gives the corresponding 1,3,5,7-tetrabenzyl ethers 2-6 having C4 symmetry.Their structures were firmly established by FAB(+) MS, 1H- and 13C-NMR.Variable temperature NMR studies evidenced conformational flexibility for 2-6.A possible rationale is proposed in order to explain the origin of the 1,3,5,7-substitution pattern. Key words: calixarenes, tetraalkylation, 1,3,5,7-tetrabenzyl ethers, C4 symmetry.