Stefan Uthmann
Bielefeld University
7 Papers
84 Citations
Stefan Uthmann is an academic researcher from Bielefeld University. The author has contributed to research in topics: Trimethylsilyl & Phosphaalkene. The author has an hindex of 5, co-authored 7 publications.
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Papers
Reactivity of Carbonyl‐Functionalized Phosphaalkenes RC(O)P=C(NMe2)2 (R = tBu, Ph) towards Electrophiles
Lothar Weber,Stefan Uthmann,Hans-Georg Stammler,Beate Neumann,Wolfgang W. Schoeller,Roland Boese,Dieter Bläser +6 more
TL;DR: In this article, the X-ray structures of compounds 6b, 7b*, 10a, 11a and 12a are reported and the chemical transformations reported here underline the versatile chemistry of phosphaalkenes and emphasize a relationship between carbonyl-functionalized phosphrasphras and the well-investigated class of phosphorus ylides.
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Transition-Metal-Substituted Acyl Phosphanes and Phosphaalkenes. 33.1 Transition-Metal-Substituted Arsaalkenes. 3.2 Reactivity of Metallodisilylphosphanes and -arsanes (η5-C5Me5)(CO)2M−E(SiMe3)2 (M = Fe, Ru; E = P, As) toward Carbon Disulfide. Formation of Metallophosphaalkenes, Metalloarsaalkenes, and 1,3,4-Thiadiphospholes
TL;DR: The first η1-arsaalkene complex was discovered in this article, which was obtained by reaction with [(Z)-cyclooctene]Cr(CO)5.
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Synthesis, Structure, and Coordination Chemistry of P-Acyl-, P-Thiocarbamoyl-, and P-Dithiocarboxyl-Substituted Phosphaalkenes R(X)C−PC(NMe2)2 (R = Ph, tBu, SSiMe3, N(Ph)SiMe3; X = O, S)†
TL;DR: In this paper, a tricyclic system with an anti orientation of the peripheric four-membered rings was shown to be a phosphaalkene with the organophosphorus fragment serving as a bridging ligand.
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Reactivity of the Inversely Polarized Arsaalkenes R–As=C(NMe2)2 {R = [(η5-C5Me5)(CO)2Fe], tBuC(O), 4-Et–C6H4C(O)} towards Phosphavinylidene Complexes [η5-(C5H5)(CO)2M=P=C(SiMe3)2] (M = Mo, W)
TL;DR: In this article, the reaction of the phosphavinylidene complexes with the ferrioaarsaalkene [Cp*(CO)(2)Fe-As=C(NMe2)(2)] gave rise to the novel eta(3)-2-phospha-1-arsaallyl complexes.
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Synthese, Struktur und Reaktivität von funktionalisierten Stibanidokomplexen des Eisens und Rutheniums [(η5‐C5Me5)(CO)2MSbR1R2] (M = Fe, Ru; R1, R2 = SiMe3, C(O)tBu, C(O)Ph, C(O)‐1 Ad)
Lothar Weber,Christian Alexander Mast,Matthias H. Scheffer,Hans Schumann,Stefan Uthmann,Roland Boese,Dieter Bläser,Hans-Georg Stammler,Anja Stammler +8 more
TL;DR: In this article, the reaction of equimolar amounts of [(eta(5)C5Me(5))(CO)(2)RuSb(SiMe3)(2)] (Ib) and the carboxylic chlorides RC(O)Cl (R = tBu, Ph, 1-adamantyl) afforded the acyl(trimethylsilyl)stibanido complexes [(eta (5)-C5me5)(CO)( 2)RUSb.
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