Reference of 19977-51-6, The reaction rate of a catalyzed reaction is faster than the reaction rate of the uncatalyzed reaction at the same temperature.19977-51-6, Name is 1-(3-Bromoprop-2-ynyl)piperidine, molecular formula is C8H12BrN. In a Article，once mentioned of 19977-51-6
Reaction of [Re2(CO)9(NCMe)] with tri(2-thienyl)phosphine (PTh3) in refluxing cyclohexane affords three substituted dirhenium complexes: [ Re2(CO)9(PTh 3)] (1), [Re 2(CO)8(NCMe)(PTh3)] (2), and [Re2(CO)8(PTh3)2] (3). Complex 2 was also obtained from the room-temperature reaction of [Re2(CO) 8(NCMe)2] with PTh3 and is an unusual example in which the acetonitrile and phosphine ligands are coordinated to the same rhenium atom. Thermolysis of 1 and 3 in refluxing xylene affords [Re 2(CO)8(mu-PTh2)(mu-eta1: kappa1-C4H3S)] (4) and [Re 2(CO)7(PTh3)(mu-PTh2)(mu-H)] (5), respectively, both resulting from carbon-phosphorus bond ceavage of a coordinated PTh3 ligand. Reaction of [Re2(CO) 10] and PTh3 in refluxing xylene gives a complex mixture of products. These products include 3-5, two further binuclear products, [Re2(CO)7(PTh3)(mu-PTh2)(mu- eta1:kappa1-C4H3S)] (6) and [Re 2(CO)7(mu-kappa1:kappa2- Th2PC4H2SPTh)(mu-eta1:kappa1 C4H3S)] (7), and the mononuclear hydrides [ReH(CO) 4(PTh3)] (8) and fran-[ReH(CO)3(PTh 3)2] (9). Binuclear 6 is structurally similar to 4 and can be obtained from reaction of the latter with 1 equiv of PTh3. Formation of 7 involves a series of rearrangements resulting in the formation of a unique new diphosphine ligand, Th2PC4H2SPTh. Reaction of [Mn2(CO)10] with PTh3 in refluxing toluene affords the phosphine-substituted product [Mn2(CO) 9(PTh3)] (10) and two carbon-phosphorus bond cleavage products, [Mn2(CO)6(mu-PTh2)(mu- eta1:eta5-C4H3S)] (11) and [Mn2(CO)5(PTh3)(mu-PTh2)(mu- eta1:eta5-C4H3S)] (12). Both 11 and 12 contain a bridging thienyl ligand that is bonded to one manganese atom in a eta5-fashion. The molecular structures of eight of these new complexes were established by single-crystal X-ray diffraction studies, allowing a detailed analysis of the disposition of the coordinated ligands.
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Reference：
Piperidine – Wikipedia,
Piperidine | C5H15035N – PubChem