Hydrosilylation of Aldehydes and Ketones Catalysed by Bis(phosphinite) Pincer Platinum Hydride Complexes
Hydrosilylation
Phenylsilane
Phosphinite
DOI:
10.1002/adsc.202000166
Publication Date:
2020-04-07T02:38:10Z
AUTHORS (4)
ABSTRACT
Abstract Bis(phosphinite) pincer platinum hydride complexes, [2,6‐(R 2 PO) C 6 H 3 ]PtH (R= t Bu, i Pr), were synthesized, characterized and applied to the hydrosilylation of aldehydes ketones. NMR study single crystal X‐ray diffraction analysis indicated that hydrides in these two complexes are comparatively less hydridic: down‐field 1 resonances (0.71 0.98 ppm) weak Pt−H interactions observed. Both found be good catalysts for ketones with phenylsilane. The corresponding alcohols isolated excellent yields following basic hydrolysis resultant products turnover frequencies (TOFs) up 3200 h −1 achieved at 60 °C toluene, which much higher than those catalysed by nickel complexes. A possible mechanism present process was discussed. magnified image
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