1,721,022 research outputs found
Reaction of dialkylfurans with magnesium monoperoxyphthalate in MeOH: a new convenient approach to 2,5-dimethoxy-2,5-dihydrofurans
No full textOxidative ring opening of furan derivatives to a,b-unsaturated g-dicarbonyl compounds, useful intermediates for 3-oxocyclopentenes synthesis
No full textPyridinium chlorochromate in the organic synthesis: a convenient oxidation of enol-ethers to esters and lactones
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Influence of a remote sulfinyl group on L-proline-catalyzed direct asymmetric aldol addition of acetone
No full textThe addition of acetone to rac-2-methylsulfinyl-benzaldehyde, catalyzed by secondary amines (morpholine, piperidine, L-proline, L-prolinamide and (S)-(–)-α,α-diphenyl-2-pyrrolidinemethanol trimethylsilyl ether), was realized. Interesting aspects, such as 1,4-asymmetric induction by the remote sulfinyl group of the aldehyde but also the stereochemical control and kinetic resolution of the racemic substrate by the chiral organocatalyst were examined. Finally, an unexpected stereoselective retro-aldol reaction catalyzed by L-proline was pointed out
Pyridinium chlorochromate in the organic synthesis: a convenient oxidation of 5-bromo-2-furan-derivatives into g-hydroxy-butenolides
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Synthesis of 4-ylidenebutenolides and 4-oxo-2-enoic acid methyl esters from 5-methoxy-2-furyl-carbinols
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