Three-dimensional bis(m-phenylene)-32-crown-10-based cryptand/paraquat catenanes.
نویسندگان
چکیده
Two three-dimensional catenanes have been successfully synthesized from a bis(m-phenylene)-32-crown-10-based cryptand and paraquat derivatives in reasonable yields.
منابع مشابه
High-yield preparation of [2]rotaxanes based on the bis(m-phenylene)-32-crown-10-based cryptand/paraquat derivative recognition motif.
Based on the complexation between bis(m-phenylene)-32-crown-10-based cryptands and a paraquat derivative, two [2]rotaxanes were synthesized by using a threading-followed-by-stoppering method. Due to the strong associations between the cryptands and the paraquat derivative, high yields were achieved even in dilute solution.
متن کاملSynthesis of a water-soluble bis(m-phenylene)-32-crown-10-based cryptand and its pH-responsive binding to a paraquat derivative.
By introducing a third arm with two anionic carboxylate groups, a water-soluble bis(m-phenylene)-32-crown-10-based cryptand was synthesized. Its pH-controlled host-guest complexation with a paraquat derivative in water was studied.
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A new cryptand, bis(1,3,5-phenylene)tri(1,4,7,10-tetraoxadecyl) (3a), has been synthesized in good yield from bis(5-hydroxy-1,3-phenylene)-26-crown-8 (2a) and tri(ethylene glycol) ditosylate using pseudo-high dilution conditions. 3a forms a strong 1:1 complex with paraquat (1) in acetone solution with a high apparent association constant, 1.4 x 10(4) M(-)(1). A stoichiometry of 1:1 was also obs...
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An AB2 monomer containing a bis(m-phenylene)-32-crown-10 and two paraquat moieties was designed and prepared. It self-organized to form a supramolecular hyperbranched polymer in solution.
متن کاملA pentiptycene-based bis(crown ether) host: synthesis and its complexation with cyclobis(paraquat-p-phenylene).
A novel pentiptycene-based bis(crown ether) host incorporating two dibenzo-24-crown-8 ether moieties has been synthesized, and its efficient complexation ability toward cyclobis(paraquat-p-phenylene) in solution and in the solid state has been explored.
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ورودعنوان ژورنال:
- Organic & biomolecular chemistry
دوره 7 7 شماره
صفحات -
تاریخ انتشار 2009