1266610-13-2Relevant articles and documents
Reactions of a trinuclear ruthenium complex derived from 3-(2-Pyridyl)indene with diphenylacetylene and phenylacetylene: Insertion of alkynes into the Ru-C bond
Chen, Dafa,Zhang, Congying,Xu, Shansheng,Song, Haibin,Wang, Baiquan
, p. 676 - 683 (2011)
Thermal treatment of the trinuclear ruthenium complex {μ2- η5:η1-(C5H4N)(C 9H5)}Ru3(CO)9 (1) with 1 equiv of diphenylacetylene gave the trinuclear complex {μ3- η1:η2:η5-(C5H 4N)(C9H5)(PhC-CPh)}Ru3(CO) 7 (2) via the insertion of an alkyne into the Ru-C(η1) bond of 1. Complex 2 could be transformed into the dinuclear and trinuclear complexes {μ2-η1:η5-(C 5H4N)(C9H5)(PhC-CPh)}Ru 2(CO)2(μ2-η2: η4-CPh-CPhCPh-CPh) (3), {μ3-η2: η3:η5-(C5H4N)(C 9H5)(CPhCPh-CPhCPh)}Ru3(CO)6 (4), and {μ2-η1:η5-(C5H 4N)(C9H5)(PhC-CPh)}Ru3(CO) 4(μ3-η2-PhC-CPh)2 (5) in the presence of excess diphenylacetylene. Similarly, reaction of 1 with 1 equiv of phenylacetylene gave the alkyne-inserted product {μ3- η1:η2:η5-(C5H 4N)(C9H5)(HC-CPh)}Ru3(CO) 7 (6), which could also react with excess phenylacetylene to give the complexes {μ3-η2:η4: η5-(C5H4N)(C9H 5)(C-CPhCH-CPh)}(μ2-H)Ru3(CO)6 (7) and {μ2-η2:η4-(C 5H4N)(C9H6)(C-CPhCH-CPh)}Ru 2(CO)4(μ2-CO) (8). Complex 7 could be transformed slowly into 8 in refluxing toluene. The reactions of 3-(2-pyridyl)indene with internal alkynes catalyzed by Ru3(CO) 12 and 1 were also tested, obtaining several C-H/alkyne coupling products, while the reaction with phenylacetylene did not work under the same conditions. The molecular structures of 2-8 were determined by X-ray diffraction.