Tetrahedron Letters

Lariat ethers. 3. Macrocylic polyethers bearing donor groups on flexible arms attached at a nitrogen pivot point

RA Schultz, DM Dishong, GW Gokel

Index: Schultz, Rose Ann; Dishong, Dennis M.; Gokel, George W. Tetrahedron Letters, 1981 , vol. 22, # 28 p. 2623 - 2626

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Citation Number: 75

Abstract

Binding constants were measured in 90% (w/w) aq. MeOH at 25.0±1.0°C using a Corning 476210 electrode and an Orion model 501 “Ionalyzer” meter according to the method of Frensdorff. We have previously reported a standard deviation for these measurements of ±3% (of Ks). Frensdorff has estimated the error to be as high as ±10%. ... All new compounds were pure by gas chromatographic analysis and gave satisfactory C and H analyses as well as acceptable IR and NMR ...