Three new substituted tetraphenylene crown ethers have been made. Bis (5-carbomethoxy- 1, 3-phenylene)-bis (p-phenylene)-(3 x+ 6)-crown-x, where x= 12, 16, and 20 (11b-11d) were synthesized via [1+ 1] cyclization of methyl 3, 5-bis [omega-chloro (oligoethyleneoxy)] benzoates (13b-3d) with methyl 3, 5-bis [omega-(p-hydroxyphenoxy)(oligoethyleneoxy)] benzoates (16b-6d) using K2CO3 as base and tetrabutylammonium iodide as a phase ...
[Monte, Aaron P.; Marona-Lewicka, Danuta; Parker, Matthew A.; Wainscott, David B.; Nelson, David L.; Nichols, David E. Journal of Medicinal Chemistry, 1996 , vol. 39, # 15 p. 2953 - 2961]