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The complexes [(PEt 3 ) 2 (Ar)Pt(μ-H)PtH(PEt 3 ) 2 ][BPh 4 ] (Ar = Ph, 2,4-Me 2 C 6 H 3 , 2,4,6-Me 3 C 6 H 2 ) were prepared and characterized. Multinuclear, multidimensional NMR studies of these complexes show that, in solution, (i) they exist in rapidly interconverting conformers which retain the bent Pt(μ-H)PtH...
The scope and limitations in the 1,n (n = 5, 6, 7) hydrogen transfers from homoallyl radicals of type 10 have been delineated. Encouraging results have notably been obtained with a dioxolane on the side chain to promote a 1,6-H transfer and with a TBS ether to promote a 1,5-H transfer.
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