Tetrahedron letters

Strongly basic macrocyclic triamines, 1, 5, 9-triazacyclododecanes for solvent extraction of gold (I) cyanide

HJ Choi, YK Bae, SC Kang, YS Park, JW Park, WI Kim…

Index: Choi, Heung-Jin; Bae, Yoon-Kyung; Kang, Seok-Chan; Sil Park, Yeon; Won Park, Joon; Kim, Woong-Il; Bell, Thomas W Tetrahedron Letters, 2002 , vol. 43, # 51 p. 9385 - 9389

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Citation Number: 9

Abstract

Solvent extraction of gold (I) dicyanide anion from alkaline gold (I) cyanide solution using unusually basic amine extractants was conducted. 1, 5, 9-Triazacyclododecane (4) is known as an unusually basic macrocyclic amine having pKa= 12.3–12.7, and is thus a good candidate as a basic amine extractant. Three lipophilic derivatives of 4 expected to stay in the organic phase during gold solvent extraction were synthesized. N-Dodecyl-1, 5, 9- ...