121986-34-3Relevant academic research and scientific papers
REGIOSELECTIVE SYNTHESIS OF ALLYLIC SULFONES BY PALLADIUM-CATALYZED DENITRO-SULFONYLATION OF ALLYLIC NITRO COMPOUNDS
Tamura, Rui,Hayashi, Koji,Kakihana, Masato,Tsuji, Masanori,Oda, Daihei
, p. 851 - 854 (1985)
Allylic nitro compounds undergo denitro-sulfonylation catalyzed by Pd(PPh3)4 or Pd(PPh3)4+NaNO2 with PhSO2Na*2H2O to afford allylic sulfones regioselectively.
SYNTHESIS WITH MANGANIC SALTS; PART III: SYNTHESIS OF 1,4-DIKETONES THROUGH MANGANIC ACETATE-MEDIATED ADDITION OF KETONE TO ISOPENTENYL SULFONES. ACETOXYLATION OF Β,Γ-UNSATURATED KETONES BY MANGANOUS AND CUPRIC ACETATES
Breuilles, Pascal,Uguen, Daniel
, p. 705 - 720 (2007/10/02)
Conditions have been found to selectively add ketones to isopentenyl sulfones.The major product, a ketone bearing a methylene group at the γ position, gave upon ozonolysis the corresponding 1,4-diketone.The usefulness of the overall process was illustrated by the efficient syntheses of jasmone and of one half of pyrenophorine.The γ-acetoxy conjugated enones that invariably formed during these additions resulted from the oxidation of an isomeric β,γ-unsaturated ketone by manganous and cupric acetates.Such an acetoxylation has been used to prepare 6β-acetoxy-cholestenone from cholesterol and also to prepare chrysanthemic acid.
