Journal ArticleDOI
Around and beyond Cram's Rule.
Anne Mengel,Oliver Reiser +1 more
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C. Pericyclic Reactions 1210 1. [4+2]-Cycloadditions 1210 2. [3+2] CycloadDitions 1211 3. [2+2]."Abstract:
C. Pericyclic Reactions 1210 1. [4+2]-Cycloadditions 1210 2. [3+2]-Cycloadditions 1211 3. [2+2]-Cycloadditions 1212 D. Sigmatropic Rearrangements 1212 1. Claisen Rearrangement 1212 2. [2,3]-Wittig Rearrangements 1213 E. Radical Reactions 1214 IV. 1,3-Induction 1215 A. Chelation-Controlled 1,3-Induction 1215 B. Nonchelation-Controlled 1,3-Induction 1216 1. Cram−Reetz Model 1216 2. Evans Model 1216 C. 1,4-Induction 1219 V. Conclusion 1219 VI. References 1221read more
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Asymmetric Catalysis by Architectural and Functional Molecular Engineering: Practical Chemo‐ and Stereoselective Hydrogenation of Ketones
Ryoji Noyori,Takeshi Ohkuma +1 more
TL;DR: The newly devised [RuCl(2)(phosphane)(2)(1,2-diamine)] complexes are excellent precatalysts for homogeneous hydrogenation of simple ketones which lack any functionality capable of interacting with the metal center.
Journal ArticleDOI
Stereoselective Cyclopropanation Reactions
TL;DR: This review will focus mainly on the new methods that have appeared in the literature since 1989 for stereoselective cyclopropanation reactions from olefins: the halomethylmetal-mediated cycloalkane reactions, the transition metal-catalyzed decomposition of diazo compounds, and the nucleophilic addition-ring closure sequence.
Journal ArticleDOI
Enantioselective Catalytic Formation of Quaternary Stereogenic Centers
TL;DR: In this article, the authors discuss recent highlights of this new direction in catalysis research: the formation of quaternary stereogenic centers by enantioselective catalytic methodologies.
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Diastereoselective allylation of carbonyl compounds and imines: application to the synthesis of natural products.
TL;DR: This paper aims to demonstrate the efforts towards in-situ applicability of EMMARM, as to provide real-time information about concrete mechanical properties such as E-modulus and compressive strength.
Journal ArticleDOI
Catalytic Selective Synthesis
TL;DR: By collecting and highlighting examples of selective catalysis, it is hoped that the field will be encouraged by the progress that has been made while bringing attention to unmet needs in the design and mechanistic understanding of selective catalysts.
References
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Allylic 1,3-strain as a controlling factor in stereoselective transformations
TL;DR: In this article, the authors present a model for controlling dyadic add-ion reactions to double-branched double-bond reactions, including the following: 1.3-Strain Control of Dlastereoselective Intermolecular Addhion Reactions InvoMng Heteroallyl Systems 10.5.
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Geometrical reaction coordinates. II. Nucleophilic addition to a carbonyl group
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Organic Synthesis Highlights
TL;DR: In this paper, the authors present a list of the most important steps in the development of catalytic catalysts for organic synthesis, including the transition metal-catalyzed functionalization of Alkanes.
Journal ArticleDOI
Doppelte Stereodifferenzierung und eine neue Strategie zur Stereokontrolle in der Organischen Synthese
TL;DR: In this article, an einfach asymmetrischen Reaktionen eines beiden chiralen Reaktanten with einem achiralen Partner analysiert werden kann.