Synthesis and reactions of a new Pt(O) complex with o-nitrosoaniline

Al-Ahmad, Saleem; Hudali, H.; Zaghal, Mukarram H.

doi:10.1016/s0020-1693(00)80620-9

Cited by 4 publications

(1 citation statement)

References 7 publications

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“…In the absence of a detailed mechanistic study, the authors propose a catalytic cycle that starts with dissociation of one phosphine ligand (not shown). The next step could involve a single oxidative addition followed by a σ-bond metathesis passing through XIII or XIV (Figure , left) . Alternatively, two oxidative addition steps to produce platinum(IV) species XV could occur (Figure , right), and 2-fold reductive elimination would then afford the alkylsilane and HX along with the regenerated platinum(0) catalyst.…”

Section: Cross-coupling Of Hydrosilanes and Primary Alkyl Electrophilesmentioning

confidence: 99%

C(sp³)–Si Cross-Coupling

2018

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The combination of electrophilic and nucleophilic reaction partners can be an obvious approach toward the formation of C(sp3)–Si bonds. Regioselectivity issues are avoided as the locus of bond formation is set in the prefunctionalized alkyl coupling partner. However, synthetically useful protocols only evolved in recent years, closing an important gap in silicon chemistry. This Perspective summarizes early efforts for the construction of C(sp3)–Si bonds and highlights the recent catalytic approaches either utilizing electrophilic or nucleophilic silicon reagents. The underlying reaction mechanisms range from ionic or radical cross-couplings to simple nucleophilic substitution.

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Section: Cross-coupling Of Hydrosilanes and Primary Alkyl Electrophilesmentioning

confidence: 99%

C(sp³)–Si Cross-Coupling

2018

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ChemInform Abstract: Synthesis and Reactions of a New Pt(0) Complex with o‐Nitrosoaniline.

1988

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247ChemInform Abstract The 1:1 molar reaction of Pt(PPh3)4 (I) and o-nitrosoaniline (II) results in formation of the tri-coordinate Pt(0) complex (III). Its reactions with alkyl halides are investigated. The isolated complex (III) reacts with MeI (IV) to yield the four-coordinate Pt(II) complex (V) containing the anionic form L of the ligand. However, the reaction between MeI (IV) and the complex (III) without isolation gives in addition to (V) cis-and trans-Pt(Me)I(PPh3)2 and PtI2(PPh3)2. With ethyl iodide, the Pt(II) complex (V), PtI2(PPh3)2, and (PPh3Et) I are formed, while PtCl2(PPh3)2 is the major product in the reaction with benzyl chloride or benzoyl chloride (yields not given).

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