Presented here is a one-pot strategy starting from rationally designed macrocyclic precursors for the di-verse construction of sophisticated ultracycles.The type and amount of the base were found to signifi-cantly influence the macrocyclization outcome.The use of 4.0 equiv.CsF resulted in ultracycles of both types A and B while the presence of CsF larger than 6.0 equiv.produced only type B ultracycles.Existence of anion template increased the total yields and affected the distribution of the ultracycles.The ultracy-cles can accommodate large organic dicarboxylates anions via multiple anion-π and hydrogen bonds,and show selectivity to the size-matched heptanedioate(C72-).Based on all possible species and rele-vant equilibrium constants as well as material and charge balances,a numerical iterative algorithm was developed and applied to fit the association constants of B2H with dicarboxylates from glutarate(C52-)to octanedioate(C82-),which gave association constants up to 103 L/mol.
Wen-Hui Mi、Teng-Yu Huang、Yu-Fei Ao、Xu-Dong Wang、Qi-Qiang Wang、De-Xian Wang
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Beijing National Laboratory for Molecular Sciences,CAS Key Laboratory of Molecular Recognition and Function,Institute of Chemistry,Chinese Academy of Sciences,Beijing 100190,China
University of Chinese Academy of Sciences,Beijing 100049,China
国家自然科学基金国家自然科学基金Beijing National Laboratory for Molecular Sciences
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