- A cobalt-phosphine complex as mediator in the formation of carbon-carbon bonds
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The tetrakis(trimethylphospine)cobalt(0) complex, [Co{P(CH3)3}4], in either stoichiometric or catalytic amounts, was shown to be an efficient mediator for a one-pot Reformatsky-type reaction between activated halogen derivatives (esters, amides, lactones) and carbonyl compounds (aldehydes, ketones) to produce a variety of alcohols.
- Orsini,Pelizzoni,Pulici
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- Oxidative carbonylation to make dicarboxylic acid esters
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A process for the preparation of an ester of dicarboxylic acid from an alkene, carbon monoxide. The process is catalyzed by a catalyst which comprises a platinum group metal, for example palladium, and a copper compound. To avoid catalyst deactivation the process is carried out in the presence of a dihydrocarbyl peroxide which is reduced to a hydrocarbyl alcohol under the process conditions. The process can be used, for example, to prepare succinate esters from ethylene, carbon monoxide, an alcohol and a dihydrocarbyl peroxide such as di-tertiary butyl peroxide.
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- ORGANOMETALLIC COMPOUNDS OF ZINC AS SELECTIVE NUCLEOPHILIC REAGENTS IN ORGANIC SYNTHESIS
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The ability of the Reformatsky reagent BrZnCH2CO2tBu 1 to undergo substitution reactions has been verified with several substituted bromides.
- Orsini, F.,Pelizzoni, F.
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p. 805 - 816
(2007/10/02)
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