Fluorescent sensors for Ca2+ and Pb2+ based on binaphthyl derivatives
摘要:
Two novel binaphthyl compounds have been synthesized for the selective fluorescent recognition of Ca2+ or Pb2+. By introducing different terminal groups to the receptor unit, the fluorescence signals of the receptors are significantly changed: I is fluorescence enhancement for Ca2+, 2 is fluorescence quenching for Pb2+. The binding properties for metal ions were examined by the absorption and fluorescence spectra. The fluorescence intensity enhancement was ascribed to the complex formation between Ca2+ and 1 which blocked the photo-induced electron transfer process. (c) 2008 Elsevier B.V. All rights reserved.
The synthesis of macrocyclic diamides and tetramides containing phenol units
作者:Daniel T. Gryko、Piotr Pia̧tek、Janusz Jurczak
DOI:10.1016/s0040-4020(97)00480-8
日期:1997.6
Thirteen new macrocyclic diamides and tetramides have been synthesized by reaction of methyl phenoxyacetates (readily obtained from various phenols) with α,ω-diamines in methanol as a solvent. Relationship between structure of esters and ratio of diamides to tetraamides has been investigated.
Chiral Recognition of Carboxylate Anions by (R)-BINOL-Based Macrocyclic Receptors
作者:Tyszka-Gumkowska、Pikus、Jurczak
DOI:10.3390/molecules24142635
日期:——
Three (R)-BINOL-based macrocyclic receptors obtained via double-amidation reaction were used for chiral recognition of four anions derived from α-hydroxy and α-amino acids. The structural factors of hosts and guests that affect chiral recognition processes were also investigated, indicating that the proper geometry of both receptor and guest molecules plays a crucial role in effective enantio-discrimination
BINOL diesters as useful building blocks towards chiral macrocyclic compounds
作者:Grzegorz Pikus、Janusz Jurczak
DOI:10.1016/j.tet.2016.02.051
日期:2016.4
Double-amidation reaction of (R)- or (S)-2,2′-([1,1′-binaphthalene]-2,2′-diylbis(oxy))diacetic dimethyl ester with five differing in length α,ω-diaminoethers were used for the synthesis of chiral macrocyclic compounds of different size of the cavity, potential receptors of various chiral guests.
In this work we presented two-, three-, and four-substrate static combinatoriallibraries (SCLs) obtained via macrocyclization of BINOL-based dimethyl ester and five α,ω-diaminoethers of varying lengths. We investigated the distribution of macrocyclic products and measured the conversion of ester, comparing the results under atmospheric pressure to those obtained under high pressure conditions. Overall
ethoxynaphthalen-1-yl)-6-bromonaphthalen-2-yloxy)butanoate was hydrolyzed by CAL-B to afford a corresponding acid with excellent enantioselectivity (E > 200). Two types of optically active binaphtholderivatives, 1-(2-hydroxy-6-(naphthalen-1-yl)naphthalen-1-yl)-6-(naphthalen-1-yl)naphthalen-2-ol and 6-butyl-1-(6-butyl-2-hydroxynaphthalen-1-yl)naphthalen-2-ol, were prepared by this chemo-enzymatic reaction