153360-84-0Relevant academic research and scientific papers
Polyhedral oligomeric silsesquioxane-conjugated bis(diphenylphosphino)amine ligand for chromium(III) catalyzed ethylene trimerization and tetramerization
Lee, Hoseong,Hong, Soon Hyeok
, p. 21 - 27 (2018)
Polyhedral oligomeric silsesquioxanes (POSSs) were attached to conventional bis(diphenylphosphino)amine (PNP) ligand as solubility-enhancing materials for catalytic ethylene trimerization and tetramerization. Differently functionalized arylphosphine ligands of the type (Ph)2PN(POSS)P(Ph)(ArR) (R = functional groups) were systematically developed, and their corresponding chromium(III) complexes were formed. The developed precatalysts exhibited excellent tolerance in solvents, including even low-carbon-number hydrocarbons such as n-pentane, n-hexane, or cyclohexane. In particular, the ortho-fluorophenyl-substituted complex showed higher stability even at higher temperatures above 120 °C. The ortho-OCF3-phenyl-substituted complex showed outstanding catalytic activity, which reached 2287 kg/g Cr/h at 30 bar.
SYNTHESIS OF THE TERTIARY PHOSPHINE OXIDES POSSESSING JUVENILE HORMONE ACTIVITY
Kolodiazhnyi, O. I.,Zemlianoy, V. N.,Baranova, L. I.,Shurubura, G. V.
, p. 137 - 140 (2007/10/02)
The synthesis of the first organophosphorus compounds (1a-d) possessing insect juvenile hormone activity is described.The structure of the compounds (1a-d) is confirmed by IR and NMR spectra.Key words: Tertiary phosphine oxides; phenols phosphorylated; ph
