Author
A. Stefani
Bio: A. Stefani is an academic researcher. The author has contributed to research in topics: Hydroformylation & Alkyl. The author has an hindex of 4, co-authored 5 publications receiving 101 citations.
Topics: Hydroformylation, Alkyl, Rhodium
Papers
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35 citations
TL;DR: The Stereochemie der Olefin-Kohlenwasserstoffe wird ausfuhrlich untersucht (die jeweiligen prozentualen Produktzusammensetzungen sind tabelliert as mentioned in this paper ).
Abstract: Die Stereochemie der mit den Systemen a), b) bzw. c) katalysierten Hydroformylierung (Standard-Methoden, keine naheren Angaben auser Druck und Temperatur) der Olefin-Kohlenwasserstoffe (Ia) bzw. (Ib) [→(II), (III) und (IV)], (V) [ - entsprechende cis- und trans-Cyclohexancarboxaldehyde], (VI) bzw. (IX) [→(VII) + (VIII)] wird ausfuhrlich untersucht (die jeweiligen prozentualen Produktzusammensetzungen sind tabelliert).
31 citations
23 citations
TL;DR: The Stereochemie der Olefin-Kohlenwasserstoffe wird ausfuhrlich untersucht (die jeweiligen prozentualen Produktzusammensetzungen sind tabelliert as discussed by the authors ).
Abstract: Die Stereochemie der mit den Systemen a), b) bzw. c) katalysierten Hydroformylierung (Standard-Methoden, keine naheren Angaben auser Druck und Temperatur) der Olefin-Kohlenwasserstoffe (Ia) bzw. (Ib) [→(II), (III) und (IV)], (V) [ - entsprechende cis- und trans-Cyclohexancarboxaldehyde], (VI) bzw. (IX) [→(VII) + (VIII)] wird ausfuhrlich untersucht (die jeweiligen prozentualen Produktzusammensetzungen sind tabelliert).
12 citations
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TL;DR: The metal-catalyzed isomerization-hydroformylation tandem reaction is of great importance for the production of linear aldehydes starting from internal olefins, but also, the shift of the double bond from a terminal position into the interior of an alkyl chain and the subsequent hydroforming can be of interest.
Abstract: The metal-catalyzed isomerization–hydroformylation tandem reaction is of great importance for the production of linear aldehydes starting from internal olefins, but also, the shift of the double bond from a terminal position into the interior of an alkyl chain and the subsequent hydroformylation can be of interest. This review aims to summarize problems and achievements in this area under particular consideration of results published by the Leibniz-Institut fur Katalyse (LIKAT) in the past two decades. A main focus is given to the variation of metals (Co, Rh, Ru, Pd, Pt, Fe) and phosphorus ligands used for the tandem reaction.
176 citations
TL;DR: The preparation of substituted dihydrofurans remains a current challenge in organic synthesis and a microreview details the various routes employed for their synthesis in the literature to the end of 2004.
101 citations
TL;DR: These stereoselective fragment couplings were instrumental in confirming that "siccanol" is not 11-epi-terpstacin but, in fact, is (-)-terpestacin itself.
Abstract: (-)-Terpestacin (1, naturally occurring enantiomer) and (+)-11-epi-terpestacin (2) were prepared using catalyst-controlled, stereoselective, intermolecular reductive coupling reactions of alkyne 9 and aldehyde 10, affording allylic alcohols 42 or 11-epi-42 in a 3:1 ratio (or 1:3 depending on the enantiomer of ligand 41a used). These stereoselective fragment couplings were instrumental in confirming that "siccanol" is not 11-epi-terpestacin but, in fact, is (-)-terpestacin itself. Several intramolecular alkyne-aldehyde reductive coupling approaches to 1 and 2 were also investigated and are discussed herein.
93 citations
TL;DR: In this paper, the effects of CO and H2 partial pressures on the reaction rate and selectivity of asymmetric hydroformylation of 1-hexene and styrene were examined using an (R,S)-BINAPHOS−RhI complex as a catalyst.
87 citations
TL;DR: In this article, some mono-and disubstituted ethenes have been asymmetrically hydroformylated with rhodium and platinum catalysts using (2 S,3 S )-2,3-bis(diphenylphosphino)butane (Chiraphos) as the chiral ligand (maximum optical yield ∼ 45%).
70 citations