18534-36-6

Upstream product

• 31082-68-5 W(CO)5(piperidine) 
• 54067-17-3 diphenylmethylphosphine-borane complex 
• 75-09-2 dichloromethane 
• 74-95-3 1,1-dibromomethane 
• 65761-18-4 pyrimidinepentacarbonyltungsten 
• 31082-68-5 piperazinepentacarbonyltungsten 
• 54218-80-3 (benzo{c}cinnoline-N')pentacarbonyltungsten 
• 14586-49-3 (pyridine)pentacarbonyltungsten⁽⁰⁾ 
• 14040-11-0 tungsten hexacarbonyl 
• 1486-28-8 diphenyl(methyl)phosphine 
• 15096-68-1 pentacarbonyl(acetonitrile)tungsten 
• 119638-31-2 cis-W(CO)4(PMePh₂)(2,3-dihydrothiophene) 

Downstream Products

• 119638-31-2 cis-W(CO)4(PMePh₂)(2,3-dihydrothiophene) 
• 131078-86-9 (CO)4(Ph₂MeP)tungsten-hydrido-triphenylstannyl complex 

Relevant academic research and scientific papers

Intramolecular exchange of coordinated and dangling phosphine groups in pentacarbonyl[(diphenylphosphino)(di-p-tolylphosphino)methane]tungsten(0)

Equilibrium constants and rates have been determined for the isomerization of the linkage isomers (OC)5W[κ1-PPh 2CH2P(p-tolyl)2] (5) and (OC) 5W[κ1-P(p-tolyl)2CH2PPh 2] (6). It is proposed that this intramolecular exchange involves a nucleophilic attack of the pendant phosphine on a cis carbonyl group, followed by ring opening and a 1,2-shift.

Phosphine Boranes in Coordination Chemistry: An Efficient Method for the Synthesis of Chiral and Achiral Organophosphorus Pentacarbonyltungsten Complexes

Organophosphorus boranes 1-6 and amine pentacarbonyltungsten complexes 14-20 react under mild conditions, to afford by ligand exchange the corresponding W(CO)5(PR3) 21-26 derivatives in 63-92% yields. The use of piperazine 13 as a diamine tungsten substituent permits a tandem reaction which removes the borane group and leads to the formation of the corresponding organophosphorus tungsten complex. The stereochemistry of the formation of pentacarbonyltungsten complexes from tertiary chiral organophosphorus borane compounds proceeds with a high stereoselectivity and retention of configuration at the chiral P center.