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Search results for: mannich reaction
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... , 571. Key Words: VINYLOGOUS MANNICH REACTIONS/STEMONA ALKALOIDS/(+ ... from Lower Carbonyl Compounds by C-C Coupling Reactions. S. F. Martin, ...
... (S )-proline also will catalyze the Mannich reaction with high enantiomeric excess. Acyclic ... allenyl alcohols such as 1. The reaction proceeds to give a product 3 of ...
... ketene precursor 20, to give the Mannich product 21. Scott E. Schaus ... 6 for the anti addition (Henry reaction) of nitro alkanes such as 5 ...
... which may be oxidized to give nonracemic Mannich products. Alternatively, enantiomerically enriched homoallylic ... Supporting Information) see article for more reactions Abstract Pd-catalyzed enantioselective diborations of prochiral allenes ...
... 9, by carbonyl methylenation followed by Mannich cyclization, into the piperidone 10. ... 48, 8765.) the Kulinkovich reaction to allylated amino acid esters such as ...
... four-component coupling, chirally-controlled aldol addition and Mannich condensation on a starting acetamide. D ... as 6 also participate efficiently in the reaction. This is another example of enantioselective ...
... the University of Southern California described a borono-Mannich homologation of chiral ?-hydroxy aldehydes such as ... 15088.) that the analogous oxa reaction, to make cyclic ethers, also ...
... two important transformations. The three-component (Mannich) condensation of 10 with 11 and ... , this high ee was observed for reactions run at elevated temperature with microwave promotion ...
... , condensed the resulting anion with the Mannich equivalent 13 to give, after cyclization ... to 2-aminothiazoles such as 4. The reaction is apparently proceeding by way of the ...
... ) that the organocatalyst 8 mediates the Mannich condensation of 6 with 7 to give ... . Organometallic catalysis allows the development of reactions that are beyond the range of conventional ...
