Ruthenium complexes of diphenylphosphino derivatives of carboxylic amides: Synthesis and characterization of bidentate P,N- and P,O-chelate ligands and their reactivity towards [RuCl2(PPh3)3]

Phosphorus as Lone Pair Donor and Ligand Acceptor: A Paddlewheel with Ru←P Axis

“…PhP(PyO) 2 , [PhP(PyO) 2 RuCl 2 -(PPh 3 )] [6] and [RuCl 2 (nbd)] x [15,16] were prepared following literature methods. Tetrahydrofuran (THF) was distilled from sodium/benzophenone and stored under dry argon.…”

“…All preparations were carried out under an atmosphere of dry argon using standard Schlenk techniques. PhP(PyO) 2 , [PhP(PyO) 2 RuCl 2 (PPh 3 )] and [RuCl 2 (nbd)] x , were prepared following literature methods. Tetrahydrofuran (THF) was distilled from sodium/benzophenone and stored under dry argon.…”

Hybrid material by anchoring a ruthenium(ii) imine complex to SiO2: preparation, characterization and DFT studies

“…A red solid of the type RuCl 2 (PR 3 ) 2 (2-PyCH)/SiO 2 red was obtained. [13][14][15][16][17] The solids RuCl 2 (PPh 3 ) 2 (2-PyCH)/Degussa 3a (302. In a three-necked round-bottom ask 2-PyCHO (151.22 mg, 1.4 mmol) and 3-AMPTSi (346 mL, 1.45 mmol) in ethanol (10.0 mL) were added, the product (2-PyCH)-AMPTSi was concentrated and washed with dry toluene.…”

Stereocontrolled Synthesis of Enantiopure cis-Fused Octahydroisoindolones via Chiral Oxazoloisoindolone Lactams

“…Accordingly, the reductive oxazolidine ring-opening of (3 R ,5a S ,9a R ,9b S )- 2a , by treatment with Et 3 SiH/BF 3 ·OEt 2 in CH 2 Cl 2 at room temperature, gave the cis -fused octahydroisoindolone (3a R ,7a S )-2-(1 R )- 4 in 98% yield. Removal of the phenylglycinol fragment was achieved without loss of stereochemical integrity by the conversion of the alcohol moiety in (3a R ,7a S )-2-(1 R )- 4 to the corresponding chloride, followed by the base-induced elimination to generate an enamide, which by acid hydrolysis gave the octahydroisoindolone (3a R ,7a S )- 6 in 93% overall yield for the three steps . Most importantly, (3a R ,7a S )- 6 obtained in this manner displayed an optical rotation consistent with that reported in the literature for its enantiomer and its structure was confirmed by X-ray crystallographic analysis .…”