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1,3-Dicarbonyl compounds in stereoselective domino …

N2 - The work describes the efficient double conjugate addition of ethane and propane dithiols in the presence of sodium methoxide to a wide variety of propargylic carbonyl containing compounds. The products of these reactions are differentiated, 1,3-dicarbonyl systems useful for various synthesis programs. By judicious use of hydroxylated substrates tandem cyclization occurs to afford tetrahydropyran lactols or, in the case of hydroxy-substituted propargylic esters, lactones. The corresponding amino-substituted propargylic aldehydes gives piperidine derivatives upon double conjugate addition tandem cyclization.

AB - The work describes the efficient double conjugate addition of ethane and propane dithiols in the presence of sodium methoxide to a wide variety of propargylic carbonyl containing compounds. The products of these reactions are differentiated, 1,3-dicarbonyl systems useful for various synthesis programs. By judicious use of hydroxylated substrates tandem cyclization occurs to afford tetrahydropyran lactols or, in the case of hydroxy-substituted propargylic esters, lactones. The corresponding amino-substituted propargylic aldehydes gives piperidine derivatives upon double conjugate addition tandem cyclization.

A special group of carbonyl compounds are 1,3-dicarbonyl compounds that have ..

Cyclopentadienyliron dicarbonyl dimer - Wikipedia

1,2-Dicarbonyl Compounds as Pronucleophiles in Organocatalytic Asymmetric Transformations

Carboxylic Acids and Derivatives, Nitrogen Compounds, and Sulfur Compounds
Jaroslav Málek

Volume 35 (1988)

Robert E.

These pyrroles can be easily obtained in high yields in a one-pot process by reaction of the 1,3-dicarbonyl compound with β-nitrostyrene and subsequent treatment of the reaction mixture with ammonia or amines.

Synthesis of β-cyanopropan-1 ..

In organic compounds with two (or more) carbonyls, the enol constitutional isomer may be stabilized

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1,4-Diketone synthesis by C-C coupling - Organic …


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