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Showing 1 to 4 of 4 for “"Chlorohydrins"”.
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Asymmetrische Synthese von bicyclischen Alpha-Aminosäuren durch intramolekulare Pauson-Khand-Reaktion von l-Alkenylsulfoximinen und Festphasensynthese mit Allylsulfoximinen
… atom. The obtained mixture of syn- and anti- chlorohydrins (ee < 70%) could be converted to the corresponding mixture of cis- and trans-alkenyloxiranes.
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Part 1. Lewis Base-Catalyzed Cross-Aldol Reactions of Aldehydes: Preparative and Mechanistic Studies. Part 2. Initial Studies on Lewis Base-Catalyzed Reactions of Silyl Ynol Ethers With Aldehydes
… have been spectroscopically identified as chlorohydrins, and they can be trapped in situ with tert-butyl isocyanide to afford an alpha-hydroxy lactone and alpha-hydroxy amide in good overall yield. Last, proof of principle for Lewis base activation of acids in reactions of silyl ynol ethers …
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Application of sulfonimidoyl substituted allyltitanium (IV) complexes to the asymmetric synthesis of alkenyloxiranes, 2,3-dihydrofurans, tetrahydrofurans, unsaturated proline analogues and allylic alcohols
… with formation of the corresponding alkenyl chlorohydrins. In the case of the cycloalkenyl derivatives the substitution proceeded with high diastereoselectivities and retention of configuration, while in the case of the alkenyl derivatives, medium diastereoselectivities with invertion of …
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1. Reinvestigation of a catalytic, enantioselective alkene dibromination and chlorohydroxylation, 2. Double cross-coupling reactions of siloxaborolates, 3. The enantioselective synthesis of 3-substituted morpholines using computer-guided catalyst design
In Chapter 1, attempts to reproduce eight, putative, enantioselective dibromination and chlorohydroxylation reactions from oft-cited literature studies are described. The reactions were performed with full fidelity to the original report wherever possible. Analysis of the enantiomeric composition …