Author
Jürgen Kulpe
Bio: Jürgen Kulpe is an academic researcher from Ludwig Maximilian University of Munich. The author has contributed to research in topics: Rhenium & Catalysis. The author has an hindex of 9, co-authored 16 publications receiving 454 citations.
Topics: Rhenium, Catalysis, Hydroformylation, Heteroatom, TPPTS
Papers
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109 citations
TL;DR: Gel-permeation chromatography is recognized as the most reliable method for the purification of aqueous solutions of the ligand tris(sodium-m -sulfonatophenyl)phosphane (TPPTS) and its industrially important rhodium complex derivatives (hydroformylation; Rhone-Poulenc/Ruhrchemie process).
92 citations
87 citations
TL;DR: In this article, the key compounds within the series of known organorhenium oxides and halides were described, including trioxo(η 5 -pentamethylcyclopentadienyl) rhenium (VII) (1), bis [(μ-oxo)oxo, tetrachloro( η 5-pentamylcyclopentadiyl)rhenium(V) (V)] (2), dichloro (oxo), diiodo), and bis[(μ -oxo)-dichloro
51 citations
TL;DR: In this paper, a multistep mechanism of these reactions starts off with O-protonation of the Re2O2 core as demonstrated by an independent synthesis of the isolable ionic intermediate.
34 citations
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TL;DR: N-Heterocyclic carbenes have become universal ligands in organometallic and inorganic coordination chemistry as mentioned in this paper, and they not only bind to any transition metal, be it in low or high oxidation states, but also to main group elements such as beryllium, sulfur, and iodine.
Abstract: N-Heterocyclic carbenes have become universal ligands in organometallic and inorganic coordination chemistry. They not only bind to any transition metal, be it in low or high oxidation states, but also to main group elements such as beryllium, sulfur, and iodine. Because of their specific coordination chemistry, N-heterocyclic carbenes both stabilize and activate metal centers in quite different key catalytic steps of organic syntheses, for example, C-H activation, C-C, C-H, C-O, and C-N bond formation. There is now ample evidence that in the new generation of organometallic catalysts the established ligand class of organophosphanes will be supplemented and, in part, replaced by N-heterocyclic carbenes. Over the past few years, this chemistry has been the field of vivid scientific competition, and yielded previously unexpected successes in key areas of homogeneous catalysis. From the work in numerous academic laboratories and in industry, a revolutionary turning point in oraganometallic catalysis is emerging.
3,388 citations
TL;DR: s, or keywords if they used Heck-type chemistry in their syntheses, because it became one of basic tools of organic preparations, a natural way to make organic preparations.
Abstract: s, or keywords if they used Heck-type chemistry in their syntheses, because it became one of basic tools of organic preparations, a natural way to
3,373 citations
473 citations
TL;DR: Water is the solvent of life and makes up about 60% of the mass of the human body, but it is rarely used as a primary solvent in synthetic organic chemistry, although there is a growing body of work related to organic chemistry in water.
Abstract: Water is truly ubiquitous. Approximately 80% of the earth’s surface is covered by water, although only 1% of this is drinkable water. Water is the solvent of life and makes up about 60% of the mass of the human body. The majority of synthetic organic chemistry carried out in research laboratories or industrial processes utilizes organic solvents, however. Organic solvents have a number of attractive features: they will dissolve a wide range of organic compounds, they come with a variety of properties, and they are often volatile and easily removed. Unfortunately, organic solvents are often toxic, flammable, and nonrenewable and have low heat capacities. In contrast, water is nontoxic and nonflammable, has a high heat capacity, and is relatively inexpensive. Of course water has some significant drawbacks as a solvent: it is a poor solvent for most organic molecules, and it is highly reactive with many classes of reagents. Because of these drawbacks, water is rarely used as a primary solvent in synthetic organic chemistry, although there is a growing body of work related to organic chemistry in water.1-3
441 citations
313 citations