Cavity-shaped phosphane ligands. Phosphane-amide hybrids based on a calix [4] arene matrix and their chelating behavior towards platinum and rhodium

C Loeber, C Wieser, D Matt, A De Cian…

Index: Bulletin de la Societe Chimique de France, , vol. 132, # 2 p. 166 - 177

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Citation Number: 63

Abstract

Résumé/Abstract The di (amide)-diphosphane hybrids 5, 11, 17, 23-tetra-tert-butyl-25, 27- bis (diethylcarbamoylmethoxy)-26, 28-bis (diphenylphosphinomethoxy) calix [4] arene (cone) 7 and (R, R)-(+)-5, 11, 17, 23-tetra-tert-butyl-25, 27-bis [(1-phenylethyl) carbamoylmethoxy]-26, 28-bis (diphenylphosphinomethoxy) calix [4] arene (cone) 8 were prepared in three steps from p-tert-butylcalix [4] arene 1. Reaction of 1 with 1.1 equiv K 2 ...