358640-82-1Relevant academic research and scientific papers
Functionalised N-pyrrolyl phosphines: Synthesis and molybdenum chemistry of a new ketophosphine
Andrews,Burrows,Lynam,Mahon,Palmer
, p. 824 - 826 (2001)
The synthesis and X-ray crystal structure of the new keto-functionalised N-pyrrolyl phosphine ligand PPh2NC4H3{C(O)CH3}-2 L is reported. The ligand coordinates to molybdenum(II) as either a uni- or a bi-dentate ligand, and the reversibility of the ketone coordination is demonstrated by the interconversion of the complexes [MoCl(CO)2(L-κ1P)(η5-C 5H5)] 1 and [Mo(L-κ2 P,O)(CO)2(η5-C5H5)][BF 4] 2 on abstraction or addition of chloride. The X-ray crystal structure of 1 is also reported.
Synthesis of pyrrolyl-, indolyl-, and carbazolylphosphanes and their catalytic application as ligands in the hydroformylation of 2-pentene
Jackstell, Ralf,Klein, Holger,Beller, Matthias,Wiese, Klaus-Diether,Roettger, Dirk
, p. 3871 - 3877 (2007/10/03)
The synthesis of π-acceptor ligands of the type PArxR3-x (x = 0-2; R = pyrrolyl, indolyl, carbazolyl; Ar = aryl) (1-8, 10, 12, 13) and P(pyrrolyl)2(carbazolyl) (11) is described. These ligands can be prepared in good to excellent yields by treatment of the corresponding free heterocyclic amines with phosphorus chlorides in the presence of base. The utilization of pyrrolyl-, indolyl-, and carbazolylphosphanes in the rhodium-catalyzed hydroformylation of 2-pentene demonstrates the influence of the ligand π-acidity on regioselectivity and activity in the hydroformylation of internal olefins. In general, increasing π-acidity of the ligand results in an increased yield of the linear oxo product. The best n/iso ratios of about 60:40 are obtained at low synthesis gas pressure (10 bar) in the presence of the P(pyrrolyl)3 (1) ligand.
