26356-10-5Relevant articles and documents
Hydride Ion Transfer Reactions in the Gas Phase. Pressure Dependence of Reaction Efficiency as a Criterion for the Recognition of Anchimeric Assistance
Crestoni, Maria Elisa,Fornarini, Simonetta,Lentini, Massimo,Speranza, Maurizio
, p. 121 - 122 (1995)
The efficiency (kobs/kcoll) of the gas phase hydride ion transfer from 2,2-dimethylbutane to tert-butyl cation displays a pronounced positive pressure dependence, which suggests significant anchimeric assistance of the methyl groups of 2,2-dimethylbutane adjacent to the departing CH2 hydride in the transition state.
METHOXYCARBONYLATION WITH FORMIC ACID AS CO SOURCE
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Paragraph 0048-0050, (2019/02/24)
Process for methoxycarbonylation with formic acid as the CO source.
Palladium-catalyzed selective generation of CO from formic acid for carbonylation of alkenes
Sang, Rui,Kucmierczyk, Peter,Dong, Kaiwu,Franke, Robert,Neumann, Helfried,Jackstell, Ralf,Beller, Matthias
supporting information, p. 5217 - 5223 (2018/04/24)
A general and selective palladium-catalyzed alkoxycarbonylation of all kinds of alkenes with formic acid (HCOOH, FA) is described. Terminal, di-, tri-, and tetra-substituted including functionalized olefins are converted into linear esters with high yields and regioselectivity. Key-to-success is the use of specific palladium catalysts containing ligands with built-in base, e.g., L5. Comparison experiments demonstrate that the active catalyst system not only facilitates isomerization and carbonylation of alkenes but also promotes the selective decomposition of HCOOH to CO under mild conditions.
Benzene-based diphosphine ligands for alkoxycarbonylation
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Paragraph 0162, (2017/02/28)
The invention relates to benzene-based diphosphine ligands for alkoxycarbonylation. Specifically, the invention relates to compounds of formula (I), where m and n are each independently 0 or 1; R1, R2, R3, R4 are each independently selected from -(C1-C12)-alkyl, -(C3-C12)-cycloalkyl, -(C3-C12)-heterocycloalkyl, -(C6-C20)-aryl, -(C3-C20)-heteroaryl; at least one of the R1, R2, R3, R4 radicals is a -(C3-C20)-heteroaryl radical; and to the use thereof as ligands in alkoxycarbonylation.