33915-38-7

Upstream product

• 67969-82-8 tetrafluoroboric acid diethyl ether 
• 175086-74-5 trans-[Pt(Me)(C_.tplbond.C(p-tolyl))(PPh₃)2] 
• 7732-18-5 water 
• 161098-80-2 [Pt(CH₃)(CC(C₆H₅))(P(C₆H₅)3)2] 
• 14104-20-2 silver tetrafluoroborate 
• 201230-82-2 carbon monoxide 
• 540-51-2 2-bromoethanol 
• 624-76-0 Iodoethanol 
• 766-97-2 4-n-methylphenylacetylene 
• 107-21-1 ethylene glycol 

Relevant academic research and scientific papers

Evidence for platinum(II)-vinylidene complexes and their reactions with water to give hydrocarbons and olefins

Treatment of the alkynyl complexes trans-[Pt(Me)(CCR)(PPh3)2] (R=p-tolyl (1a), Ph (1b)) at low temperature in a CD2Cl2 solution with stoichiometric amounts of the acids HBF4·Et2O or CF3SO3H affords the corresponding vinylidene derivatives trans-[Pt(Me){=C=C(H)R}(PPh3)2]X (R=p-tolyl, X=BF4 (2aBF4); R=p-tolyl, X=CF3SO3 (2aCF3SO3); R=Ph, X=BF4 (2bBF4)) on the basis of 1H- and 31P{1H}-NMR data. The reactions of the in situ generated complexes 2 with water, which were followed by 1H- and 31P{1H}-NMR, lead to the formation of a mixture of the carbonyl complex [Pt(Me)(CO)(PPh3)2]X (3) and the hydroxo-bridged dinuclear compound [Pt(μ-OH)(PPh3)2]2X2 (4) in a ca. 1:2 ratio. The formation of 3 and 4 is accompanied with the liberation of hydrocarbons R-CH3 and olefins CH3CH=CHR (R=p-tolyl, Ph), respectively, which arise from the vinylidene ligand likely via an hydroxycarbene intermediate.

Reactions of platinum (II)-alkyne and -alkynyl complexes with the hydroxy compounds HO(CH2)2X (X = Br, I, OH)

The cationic solvento species trans-[Pt(Me) (PPh3)2(solv)] [BF4] (solv = CH2Cl2, Et2O) reacts with 1.5 equiv. of p-tolylacetylene in the presence of a 10-fold excess of the hydroxylated compounds HOCH2CH2X (X = Br, I, OH) to give the corresponding (alkoxy)alkyl carbene complexes frans-[Pt(Me) {=C(OCH2CH2X)CH2(p-tolyl)}(PPh 3)2] [BF4] (1-3). Complexes 1-3 were also obtained by reaction of the acetylide complex trans-[Pt(Me) (C≡CR) (PPh3)2] (R=p-tolyl) in the presence of 1 equiv. of HBF4 with an excess of HOCH2CH2X. The carbene complex trans-[Pt(Me) {=C(OCH2CH2Cl)CH2R}(PPh3) 2][BF4] (R = p-tolyl) can be readily deprotonated by NEt3 to afford the vinyl complex trans-[Pt(Me) {C(OCH2CH2Cl)=CH(R)}(PPh3)2] (4). A similar behavior is observed also for 1-3 when treated with a base.