Hydrogen Transfer Reactions Accompanying the Cobalt-catalyzed Addition of Carbon Monoxide to Olefinic Compounds

Natta, G.; Pino, P.; Ercoli, R.

doi:10.1021/ja01138a007

Cited by 47 publications

(6 citation statements)

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“…[23,24] The negative influence of the pressure of carbon monoxide on the reaction rate [25] may be explained in terms of the shift of equilibrium D (Scheme 1) to the acyltricarbonylcobalt that was found to be more easily reducible than acyltetracarbonylcobalt.…”

Section: Resultsmentioning

confidence: 99%

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Influence of an Additional Gas on the Hydroformylation and Related Reactions

Bianchi

Frediani

Piacenti

et al. 2002

Eur. J. Inorg. Chem.

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The initial rate of the catalytic carbonylations reported in this paper [the hydroformylation of olefins in the presence of Co 2 (CO) 8 , the carbonylation of orthoesters catalyzed by Co 2 (CO) 8 ], and the formation of tetracarbonylhydridocobalt(I) from octacarbonyldicobalt and dihydrogen] was reduced by the addition of dinitrogen, argon, or xenon. The influence of xenon on the rate of hydroformylation was greater than that of dinitrogen or argon. Helium and neon,

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Section: Resultsmentioning

confidence: 99%

“…56°C) was prepared according to Natta and Ercoli, [26] and recrystallized from hexane; cyclohexene (Fluka) was purified (99.9% purity by GC) through elution on an Al 2 O 3 column and then distilled (b.p. 83°C) under dinitrogen; triethyl orthoformate: (Fluka) was distilled under dinitrogen (b.p.…”

Section: Methodsmentioning

confidence: 99%

Influence of an Additional Gas on the Hydroformylation and Related Reactions

Bianchi

Frediani

Piacenti

et al. 2002

Eur. J. Inorg. Chem.

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“…Straightforward transition-metal-catalyzed aminocarbonylation reactions of olefins with amines in the presence of CO have long been undeveloped, in part because of considerable challenges to be met such as the carbonylation of the amine substrates (e.g., formamide byproducts 149 formation) and the amination of the alkenes (side compounds 150 ) prior to the aminocarbonylation (Scheme ). Early efforts to develop catalytic processes focused on the use of Co, − Ni, Fe, and Ru complexes. Nevertheless, such catalytic systems required very harsh reaction conditions (>200 °C; > 150 atm), and suffered from poor chemoselectivity.…”

Section: Carboxylic Acid Surrogatesmentioning

confidence: 99%

Nonclassical Routes for Amide Bond Formation

2016

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The present review offers an overview of nonclassical (e.g., with no pre- or in situ activation of a carboxylic acid partner) approaches for the construction of amide bonds. The review aims to comprehensively discuss relevant work, which was mainly done in the field in the last 20 years. Organization of the data follows a subdivision according to substrate classes: catalytic direct formation of amides from carboxylic and amines ( section 2 ); the use of carboxylic acid surrogates ( section 3 ); and the use of amine surrogates ( section 4 ). The ligation strategies (NCL, Staudinger, KAHA, KATs, etc.) that could involve both carboxylic acid and amine surrogates are treated separately in section 5 .

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“…The following complexes were prepared according to the literature: [Ru(CO) 2 (PPh 3 )Cl 2 ] 2 (1) [8], [Ru(CO) 2 (PPh 3 )Br 2 ] 2 (2) [8], [Ru(CO) 2 (PPh 3 )I 2 ] 2 (3) [8], Co 2 (CO) 8 (4) [9]. Their spectroscopic characteristics are reported in Table 1.…”

Section: Synthesis Of Complexesmentioning

confidence: 99%