Matches in SemOpenAlex for { <https://semopenalex.org/work/W2000276524> ?p ?o ?g. }
- W2000276524 endingPage "6836" @default.
- W2000276524 startingPage "6829" @default.
- W2000276524 abstract "Reaction of the ruthenium allenylidene complex [Ru]═C═C═CPh2 (1, [Ru] = Cp(PPh3)2Ru) with the propargylic Grignard reagent R-C≡CCH2MgBr (R = CH3, CH2CH3, Ph) yielded a mixture of two acetylide complexes. The major products, [Ru]C≡CCPh2C(R)═C═CH2 (2a, R = CH3; 2b, R = CH2CH3; 2c, R = Ph), have an allenyne moiety, and the minor ones, [Ru]C≡CCPh2CH2C≡CR (3a, R = CH3; 3b, R = CH2CH3; 3c, R = Ph), have a diyne ligand. The reaction of similar propargyl Grignard reagent HC≡CCH2MgBr with 1 yielded only the diyne complex 3d. Treatment of complexes 2a−2c with HBF4 afforded the cyclization complexes 5a−5c, respectively, proceeding via a vinylidene intermediate. The cyclization of the allenyl and the vinylidene groups is accompanied with a phenyl group migration. Complex 5b is fully characterized by a single-crystal X-ray diffraction analysis. Similar cyclization of complexes 2a and 2b, catalyzed by a Au phosphine complex, gave the ruthenium vinylidene complexes 6a and 6b, respectively, with different selectivity from that of the protonation reaction. Au-catalyzed cyclization of the diyne complex 3d yielded 6d, which is fully characterized by a single-crystal X-ray diffraction analysis." @default.
- W2000276524 created "2016-06-24" @default.
- W2000276524 creator A5012012554 @default.
- W2000276524 creator A5027336778 @default.
- W2000276524 creator A5050309711 @default.
- W2000276524 creator A5068277037 @default.
- W2000276524 creator A5079412631 @default.
- W2000276524 creator A5082102839 @default.
- W2000276524 date "2010-11-24" @default.
- W2000276524 modified "2023-09-24" @default.
- W2000276524 title "Cyclization Accompanied with 1,2-Phenyl Migration in the Protonation of Ruthenium Acetylide Complex Containing an Allenyl Group" @default.
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