CAS: 182496-55-5; 4-Tert-Butylthiacalix[4]Arene

主要参考文献

参考标题:Selective Synthesis Of Three Conformational Isomers Of Tetrakis[(Ethoxycarbonyl)Methoxy]Thiacalix[4]Arene And Their Complexation Properties Towards Alkali Metal Ions †
作者:Nobuhiko Iki,Fumitaka Narumi,Toyohisa Fujimoto,Naoya Morohashi,Sotaro Miyano
摘要:5,11,17,23-Tetra-Tert-Butyl-2,8,14,20-Tetrathiacalix[4]Arene-25,26,27,28-Tetrol (Tca) Underwent Facile Tetra-O-Alkylation By Treatment With Ethyl Bromoacetate In The Presence Of An Alkali Carbonate As Base Catalyst In Dmf Or Acetone To Provide A Mixture Of Conformational Isomers (Cone, Partial Cone, And 1,3-Alternate) Of 5,11,17,23-Tetra-Tert-Butyl-25,26,27,28-Tetrakis[(Ethoxycarbonyl)Methoxy]-2,8,14,20-Tetrathiacalix[4]Arene (1), The Stereochemistries Of Which Were Unambiguously Assigned By 1H Nmr And X-Ray Analysis. The Isomer Distribution Depended Significantly On The Base Used, Thus Providing A Facile Route For The Preparation Of A Particular Conformer; Na2Co3, K2Co3, And Cs2Co3 Gave Cone- (77% Yield), Partial-Cone- (58% Yield), And 1,3-Alternate-1 (78% Yield) In Acetone, Respectively. Cone- And Partial-Cone-1, In Turn, Showed Preference For Na+ And K+, Respectively, In An Ion-Pair Extraction Study, While 1,3-Alternate-1 Preferred Most Rb+ Ion, Followed By K+ And Then Cs+. These Results Imply That The Size Of The Cavities Provided By The (Ethoxycarbonyl)Methoxy Groups Arranged On The Periphery Of The Thiacalix[4]Arene Skeleton Is In The Order Cone- <â Partial-Cone- <â 1,3-Alternate-1. The Ion Selectivity Of Cone-1 Was Rather Better Than That Of The Methylene-Bridged Counterpart, 5,11,17,23-Tetra-Tert-Butyl-25,26,27,28-Tetrakis[(Ethoxycarbonyl)Methoxy]Calix[4]Arene (2). The Stoichiometry Of The Complex Of Cone-1 With Na+ Ion Was Determined To Be 1Aˆ¶1 With The Stability Constant Of 102.85 Mol–1 Dm3 In 50 (V/v)% Cdcl3A€“cd3Od.

合成参考文献

参考文献:10.1007/s40820-025-01923-w
摘要:Liu X, Xie J, Zhou Z, Lian H, Sui X, Li Q, Lin M, Liu D, Yuan H, Gao F, Wu Y, Yang HG, Yang S, Hou Y. Reproducible Fabrication of Perovskite Photovoltaics via Supramolecule Confinement Growth. Nanomicro Lett. 2025 Sep 15;18(1):67.
参考文献:10.5517/cc5dnls
摘要:doi:10.5517/cc5dnls