So far, in addition to halogen atoms, other non-metallic atoms can become part of the aromatic heterocycle, and the target ring system is still aromatic.How, Rebecca C.; Dingwall, Paul; Hembre, Robert T.; Ponasik, James A.; Tolleson, Ginette S.; Clarke, Matthew L. researched the compound: 1,3,5,7-Tetramethyl-6-phenyl-2,4,8-trioxa-6-phosphaadamantane( cas:97739-46-3 ).Formula: C16H21O3P.They published the article 《Composition of catalyst resting states of hydroformylation catalysts derived from bulky mono-phosphorus ligands, rhodium dicarbonyl acetylacetonate and syngas》 about this compound( cas:97739-46-3 ) in Molecular Catalysis. Keywords: catalyst hydroformylation bulky phosphine rhodium dicarbonyl acetylacetonate syngas. We’ll tell you more about this compound (cas:97739-46-3).
The paper describes the composition of the resting states of several catalysts for alkene hydroformylation derived from bulky monophosphorus ligands. The results presented assess how bulky ligands compete with CO for the Rh, and hence the role of ‘unmodified’ catalysts in alkene hydroformylation in the presence of these ligands. High Pressure Infra-Red (HPIR) spectroscopy was carried out at the Rh and syngas concentrations typically used during catalysis experiments These HPIR studies revealed that two ligands previously studied in Rh-catalyzed hydroformylation react with [Rh(acac)(CO)2] and H2/CO to give the unmodified Rh cluster, [Rh6(CO)16], as the only detectable species. Both less bulky phosphoramidites, and 1,3,5,7-Tetramethyl-6-phenyl-2,4,8-trioxa-6-phosphaadamantane, however, do not show [Rh6(CO)16], and hence catalysis proceeds by purely ligand modified species under normal conditions. In the case of the Rh/phosphaadamantane catalysts, anecdotal evidence that this only forms a particularly useful catalyst above a certain pressure threshold can be understood in terms of how the catalyst composition varies with pressure. The ligands discussed have all been assessed in the hydroformylation of propene to sep. their innate branched selectivity from their ability to isomerize higher alkenes to internal isomers.
Here is a brief introduction to this compound(97739-46-3)Formula: C16H21O3P, if you want to know about other compounds related to this compound(97739-46-3), you can read my other articles.
Reference:
Tetrahydropyran – Wikipedia,
Tetrahydropyran – an overview | ScienceDirect Topics