Synthesis of stereoisomeric crown ethers composed of cis- and trans-2,5-bis(hydroxymethyl)tetrahydrofuran units and their selective transport of alkali metal cations through liquid membranes
Synthesis of stereoisomeric crown ethers composed of cis- and trans-2,5-bis(hydroxymethyl)tetrahydrofuran units and their selective transport of alkali metal cations through liquid membranes