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1.4.4.9 Method 9: Silylcarbonylation

DOI: 10.1055/sos-SD-001-00322

Malacria, M.; Aubert, C.; Renaud, J.-L.Science of Synthesis, (20011494.

Transition-metal reactions with trialkylhydrosilanes (R13SiH) and carbon monoxide have been the subject of intensive studies.[‌226‌,‌243‌] The reactions parallel those of molecular hydrogen; indeed, the reactions of alkenes with trialkylhydrosilanes and carbon monoxide in the presence of octacarbonyldicobalt(0) (83) resulted in the incorporation of one molecule of carbon monoxide to give silyl enol ethers.[‌244‌] In addition to 83, chlorotris(triphenylphosphine)rhodium(I) and dodecacarbonyltriruthenium(0) also catalyze this reaction.[‌245‌] The reaction of diethyl(methyl)silane and carbon monoxide with cyclic alkenes in the presence of a catalytic amount of 83 leads to the corresponding (siloxymethylene)cycloalkanes as the sole products of the reaction (Scheme 65). No trace of the acylsilanes or β-silyl aldehydes was detected, as would be expected from direct formal analogy with hydroformylation. However, with terminal alkenes, since two reaction sites are available, the four siloxymethylene isomers (regio- and stereoisomers) are obtained.[‌246‌]

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