Phosphinates reduction

Besides [Ni(CO)4] and organometallic compounds discussed in the next section, nickel is found in the formally zero oxidation state with ligands such as CN and phosphines. Reduction of K2[Ni (CN)4] with potassium in liquid ammonia precipitates yellow K4[Ni (CN)4], which is sensitive to aerial oxidation. Being... 

For ageing experiments the toluene solution of the grafted polymer was first treated with an excess of triphenyl phosphine (reduction of residual hydroperoxides into alcohols), then suitable amount of the parent polymer was added and co-precipitation was performed into methanol. The polymer blend was vulcanized by adding dicumyl peroxide (5% w)prior precipitation (pressing conditions became 190°C, 190 bar, 5 min). 

The olefination of aldehydes by diazoalkanes depends on catalysts that accept the keto oxygen from the substrate S. and transfer it to an auxiliary reagent R.. A redox process M"=0 is necessarily included in such a sequence (Scheme 3). The reduced step 0=Mo (S2C-NEt2)2 has in fact been isolated from the phosphine reduction of catalyst 4, and a carbene complex of structure 11 according to eq. (7) was suggested [8],... 

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