Abstract
New complexes [Cp*Ru(bisimine)Cl] are
active catalysts for the regioselective alkylation of allylic carbonates
by soft carbonucleophiles, in favour of the branched isomers. The
catalysts can be conveniently prepared in situ from [Cp* Ru(cod)Cl] and
a bulky aromatic bisimine.
Keywords
regioselective allylic alkylation - ruthenium(bisimine) complex
catalysed - coupling reactions
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8 (C5 Me5 )RuCl(MesN=CH-CH=NMes):
selected 1 H NMR data (200 MHz): δ (ppm)
1.07 (s, 15 H, C5 Me5 ), 1.87 (s, 6 H, 2 Me),
2.30 (s, 6 H, 2 Me), 2.38 (s, 6 H, 2 Me), 6.82 (s, 2 H, 2 HAr),
6.92 (s, 2 H, 2 HAr), 8.68 (s, 2 H, 2 CH=N).
