p-t-butylcalix[4]arene, p-t-butylcalix[6]arene, and p-t-butylcalix[8]arene and the introduction of functional groups in their place. Although attempts to functionalize the p-positions of the calixarenes have generally failed, the corresponding methyl ethers are amenable to facile acetylation to provide syntheses of the p-acetyl-, p-carboxy-, and p-carbomethoxycalix [6] arenes and calix[8]arenes. Acetylation
introducing short oligoethyleneglycol units (-CH2CH2O)mCH3, (m = 1,2,) on lipophilic matrices represented by cyclic tetra- 1 and octa-2 oligomers obtained from the base catalyzedreaction of p-butylphenol or p-octylphenol and formaldeyde. 1H NMR and 13C NMR spectral data have been used to establish the conformational freedon of the ligands, which is important for cation binding studies.
已经合成了几种开链配体(多配位体)3和4,它们在以环四-1和八环为代表的亲脂性基质上引入了短的低聚乙二醇单元(-CH 2 CH 2 O)m CH 3(m = 1,2,)。由对丁基苯酚或对辛基苯酚与甲醛反应的碱催化反应获得的2种低聚物。1 H NMR和13 C NMR光谱数据已用于建立配体的构象自由度,这对阳离子结合研究非常重要。
Selective Esterification of Calix[4]arenes
作者:Zhi-Tang Huang、Guo-Qiang Wang
DOI:10.1080/00397919408012619
日期:1994.1
Calix[4]arenes <(1a)under bar> and <(1b)under bar> reacted with acid chlorides at room temperature in the presence of triethylamine to give the selectively diametrical diesterified products (2) under bar in good to excellent yields. While at the same reaction conditions, calix[8]arenes <(3a)under bar> and <(3b)under bar> gave the fully esterified products (4) under bar.
Huang Zhi-Tang, Wang Guo-Qiang, Synth. Commun, 24 (1994) N 1, S 11-22
作者:Huang Zhi-Tang, Wang Guo-Qiang
DOI:——
日期:——
BOCCHI, V.;FOINA, D.;POCHINI, A.;UNGARO, R.;ANDREETTI, G. D., TETRAHEDRON, 1982, 38, N 3, 373-378
作者:BOCCHI, V.、FOINA, D.、POCHINI, A.、UNGARO, R.、ANDREETTI, G. D.