Fine Chemicals by Reductive Carbonylation of Nitroarenes, Catalyzed by Transition Metal Complexes

Ragaini, Fabio; Cenini, Sergio; Gallo, Emma; Caselli, Alessandro; Fantauzzi, Simone

doi:10.2174/138527206778018249

Cited by 72 publications

(43 citation statements)

References 81 publications

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“…Die meisten dieser Reduktionen verlaufen jedoch über das Wassergasgleichgewicht und nutzen somit im Endeffekt Wasserstoff als finales Reduktionsmittel 11. 12 Wir berichten hier nun, dass Kohlenmonoxid auch in Abwesenheit einer Wasserstoffquelle als Reduktionsmittel in reduktiven Aminierungen agieren kann. Dieser Prozess war unseres Wissens nach bisher unbekannt.…”

Section: Untersuchung Potenzieller Katalysatorenunclassified

Reduktive Aminierung ohne externe Wasserstoffquelle

Chusov

List

2014

Angewandte Chemie

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[3] Einmal aufgereinigt wird der erhaltene Wasserstoff in unzähligen Anwendungen eingesetzt, zu denen auch die reduktiven Aminierungen gehçren.Die direkte Verwendung von CO als Reduktionsmittel bietet deutliche Vorteile, da drei Schritte (mit Erhitzen auf bis zu 350 8C und drei verschiedenen Katalysatoren) potenziell in eine einzige Reaktion mit nur einem Katalysator übergehen würden. In der Tat ist CO, außer seiner Rolle als sehr nützlicher C1-Baustein, [4][5][6][7][8][9] auch als Reduktionsmittel bekannt.

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Section: Untersuchung Potenzieller Katalysatorenunclassified

Reduktive Aminierung ohne externe Wasserstoffquelle

Chusov

List

2014

Angewandte Chemie

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“…Some of us have previously reviewed the synthesis of fine chemicals by reduction of nitroarenes by carbon monoxide in a book chapter covering the literature up to 1995, a review covering the period 1996–2005, and a personal account, only describing the results obtained in our group . The same field has also been included as part of other reviews with a wider scope .…”

Section: Introductionmentioning

confidence: 99%

Transition Metal Catalyzed Reductive Cyclization Reactions of Nitroarenes and Nitroalkenes

2019

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Nitroarenes are the entry point for the production of most nitrogen‐containing aromatic compounds. Thus, any transformation that leads directly from them to the final product allows saving one or more synthetic steps. This review deals with homogeneously catalyzed reactions leading to the formation of N‐heterocyclic compounds from nitroarenes or nitroalkenes in one pot. Reactions that lead to the intermediate formation of amines are not considered. Carbon monoxide is the most often employed reductant because it allows selective reactions, is cheap, and only produces CO2 as stoichiometric byproduct. However, the difficulty in handling pressurized CO has stimulated in recent years the development of CO‐surrogates, that is molecules able to liberate CO during the reaction. The use of phosphines and diols has also been developed in conjunction with molybdenum catalysts. The review focusses in more detail on the literature in the period 2006–2018, but reference to earlier work is made when necessary to put recent results in a more general context.

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“…Carbonylation of nitrocompounds [1][2][3][4][5] and amines [6][7][8][9][10] is particularly important in polymer industry -during production of carbamates, isocyanates and ureas. Carbonylation of amines is efficiently catalyzed by square planar palladium(II) complexes with nitrogen donor ligands [11][12][13][14][15][16][17][18][19][20][21] and two directions of this process are possible -the process carried out in alcohols leads to carbamates (Eq.…”

Section: Introductionmentioning

confidence: 99%