Abstract
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.
基金项目
国家自然科学基金(22171271)
国家自然科学基金(22022112)
Beijing National Laboratory for Molecular Sciences(BNLMS-CXXM-202002)
维普
万方数据