Communication
Dalton Transactions
and Technology Agency (JST) Japan, and Grant in Aid for Scien-
tific Research on Innovative Areas “Molecular Activation
Directed toward Straightforward Synthesis” (no. 23105536 and
25105743), for Young Scientist (A) (no. 24685011) from Minis-
try of Education, Culture, Sports, Science and Technology,
Japan.
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7 Several examples of hydrogenation of alkenes or alkynes
catalyzed by iron–phosphine complexes have been
reported: (a) C. Bianchini, A. Meli, M. Peruzzini,
P. Frediani, C. Bohanna, M. A. Esteruelas and L. A. Oro,
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Notes and references
‡As a closely related example with 1, a hydride exchange process among the η2-
bound H–Si group and the hydride on the ruthenium center via secondary inter-
actions (SISHA) have been described in Sabo-Etienne’s ruthenium-dihydride
complexes having two η2-bound H–Si moieties, (PCy3)2Ru(H)2{(η2-H-SiR2)2X} (R =
Me, X = O, C6H4, (CH2)2, (CH2)3 and OSiMe2O; R = Ph, X = O).16
§Crabtree’s complex, [(COD)Ir(PCy3)(pyridine)]PF6,17 and Chirik’s bis(arylimid-
azol-2-ylidene)pyridine iron compounds6d showed good catalytic activity toward
catalytic hydrogenation of several tri- and tetrasubstituted alkenes. Although
Crabtree’s complex can be applicable to hydrogenation of 2,3-dimethyl-2-butene,
Chirik’s complexes showed no or lower catalytic activity for 2,3-dimethyl-2-
butene hydrogenation.
8 (a) M. A. Schroeder and M. S. Wrighton, J. Am. Chem. Soc.,
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9 H. Tsutsumi, Y. Sunada and H. Nagashima, Chem.
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of ethylbenzene. Similar dehydrogenative hydrosilylation of styrene derivatives
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5 R. Poli, Chem. Rev., 1996, 96, 2135.
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16692 | Dalton Trans., 2013, 42, 16687–16692
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