137039-45-3

Basic information

• Product Name: RuCl₂(PPh₃)2(C=CH-t-Bu)
• Synonyms: RuCl₂(PPh₃)2(C=CH-t-Bu)
• CAS NO: 137039-45-3
• Molecular Weight: 778.703
• Mol File: 137039-45-3.mol
• Article Data: 3

Chemical Properties

• CAS DataBase Reference: RuCl₂(PPh₃)2(C=CH-t-Bu)(CAS DataBase Reference)
• NIST Chemistry Reference: RuCl₂(PPh₃)2(C=CH-t-Bu)(137039-45-3)
• EPA Substance Registry System: RuCl₂(PPh₃)2(C=CH-t-Bu)(137039-45-3)

Safety Data

• Hazardous Substances Data: 137039-45-3(Hazardous Substances Data)

Upstream product

• 15529-49-4 tris(triphenylphosphine)ruthenium(II) chloride 
• 917-92-0 3,3-Dimethylbut-1-yne 

Downstream Products

• 125615-90-9 [RuCl(C(CCtBu)CHtBu)(CO)(triphenylphosphine)2] 
• 125615-90-9 RuCl(CO)(PPh₃)2(C(CC-t-Bu)=CH-t-Bu) 

Relevant articles and documents

Some organometallic chemistry of ruthenium(II)

Stoichiometric and catalytic reactions of Ru(II) phosphine complexes with alkynes, olefins, and enynes are described.The hydride complex RuCl(CO)H(PPh3)3 (1) reacts with the double bond of a cis-enyne whereas it reacts with triple bonds of trans-enynes.Metathesis of vinyl silanes with olefins are catalyzed by 1 where β-Si elimination is the key step.Dimerizations of t-Bu- and Me3Si-substituted acetylenes into the corresponding butatrienes are catalyzed by Ru(II) active species as studied by isolation of the intermediates.A model reaction for the crucial step of the catalytic cycle, formation of a Ru vinylidene complex from acetylene, has been fully simulated by ab initio-MO calculations.Keywords: Ruthenium; Olefins; Alkynes; Catalysis; Crystal structure; MO calculations

Regio-and stereocontrolled dimerization of tert-butylacetylene to (Z)-1,4-Di-tert-butylbutatriene by ruthenium catalysis. Reaction mechanism involving alkynyl-vinylidene coupling and rearrangement of the metal-bound C4 unit

Ruthenium complexes, Ru(cod)(cot) (cod = 1,5-cyclooctadiene, cot = cyclooctariene) and Ru(CO)(PPh3)3(H)2 (1), catalyze the dimerization of tert-butylacetylene to (Z)-1,4-di-tert-butylbutatriene ((Z)-dbb). In the case of the Ru(cod)(cot) catalyst, the addition of bulky tertiary phosphines is an essential factor to effect good selectivity to dbb, the byproducts being isomers of 1,3-enynes. From the reaction of 1 with tert-butylacetylene, Ru(CO)(PPh3)3(H)(C≡CtBu) was isolated, which reacted further with HC≡CtBu to give Ru(CO)(PPh3)3(C≡CtBu)2 (3). The halogen analogue of this complex RuX2(PPh3)3, reacted with HC≡CtBu to give vinylidene comPlexes RuX2(PPh3)2(C=CHtBu) (11a, X = Cl; 11b, X = Br). Reaction of 11a with a calculated amount of LiC≡CtBu followed by bubbling of CO yielded RuCl(CO)(PPh3)3{C(C≡CtBu)=CH tBu} (12) where the C≡CtBu group and tBu are mutually cis to each other with respect to the double bond of the C4 unit. Complex 12 in tenzene decomposed at 50°C releasing the C4 chain as (Z)-dbb. From these reactions, the mechanism for the catalytic production of (Z)-dbb has been derived. The X-ray structure of 12 is reported.