Synthesis of new calix[4]arene-based phosphorus ligands and their application in the Rh(I) catalyzed hydroformylation of 1-octene

✍ Scribed by C. Kunze; D. Selent; I. Neda; R. Schmutzler; A. Spannenberg; A. Börner

• Publisher: John Wiley and Sons
• Year: 2001
• Tongue: English
• Weight: 249 KB
• Volume: 12
• Category: Article
• ISSN: 1042-7163
• DOI: 10.1002/hc.1088

✦ Synopsis

Abstract

The synthesis of calix[4]arene‐based phosphorus diamides and phosphites is described. These oligocyclic ligands have been tested in the Rh(I)‐ catalyzed hydroformylation of 1‐octene. Depending on the reaction conditions, yields up to 99% and n/iso‐selectivities between 0.7 and 2.6 have been observed. tert‐Butyl groups on the upper rim of the calix[4]arene template had a beneficial effect on the catalytic reaction. In general biuret‐derived P‐ligands were superior. For comparison, the corresponding “monomeric” ligands have also been synthesized and were employed in the catalytic reaction. © 2001 John Wiley & Sons, Inc. Heteroatom Chem 12:577–585, 2001