TLC was performed on Merck UV 254 plates with Vilber Lourmat VL-6.LC UV lamp (254 nm) control. Elemental analysis of synthesized compounds was done on the PerkinElmer PE 2400 CHNS/O Elemental Analyzer. NMR spectra were recorded on Bruker Avance 400 Nanobay with signals from residual protons of deuterated solvents (CDCl3 or DMSO-d6) as internal standard. MALDI mass-spectra were measured on UltraFlex III TOF/TOF with DHB matrix, laser Nd:YAG, λ = 355 nm. The IR spectra were recorded on a Bruker Vector-22 spectrometer. Powdered samples were mixed with KBr and then pressed in a press form to give KBr tablet. The melting points were measured using the Stuart SMP10.
All reagents were purchased from either Acros or Sigma-Aldrich and used without further purification. Solvents were purified according to standard methods.33 hex-5-yn-1-yl 4-methylbenzenesulfonate,34 (link) 11,23-bis(chloromethyl)-25,27-dihydroxy-26,28-dibutoxycalix[4]arene 3 (ref. 22 (link)) and 11,23-bis[3-(1-(3-azidopropyl))-1H-imidazolium)methyl]-25,27-dihydroxy-26,28-dibutoxycalix[4]arene dichloride 5 (ref. 22 (link)) were synthesized by previously reported methods.
All reagents were purchased from either Acros or Sigma-Aldrich and used without further purification. Solvents were purified according to standard methods.33 hex-5-yn-1-yl 4-methylbenzenesulfonate,34 (link) 11,23-bis(chloromethyl)-25,27-dihydroxy-26,28-dibutoxycalix[4]arene 3 (ref. 22 (link)) and 11,23-bis[3-(1-(3-azidopropyl))-1H-imidazolium)methyl]-25,27-dihydroxy-26,28-dibutoxycalix[4]arene dichloride 5 (ref. 22 (link)) were synthesized by previously reported methods.