[EN] ARYL BETA DIKETONES AND THEIR USE A ODORANTS<br/>[FR] BÊTA-DICÉTONES D'ARYLE ET LEUR UTILISATION COMME MATIÈRES ODORANTES
申请人:GIVAUDAN SA
公开号:WO2017186846A1
公开(公告)日:2017-11-02
The present invention refers to aryl beta diketones of the formula (I) wherein Y, R1, R2 and R3 have the same meaning as given in the description. The invention further refers to fragrance compositions and fragranced articles comprising them.
catalytic enantioselective Michaelreaction has been developed using chiral palladium complexes. Various substrates including β-keto esters and 1,3-diketones reacted with α,β-unsaturated carbonyl compounds to give the corresponding Michael adducts in good yield with up to 99% ee, thereby affording chiral quaternary carbon centers. In these reactions, chiral palladium enolates were generated as key intermediates
7-Oxabicycioheptane substituted enaminone prostaglandin analogs are provided having the structural formula
and including all stereoisomers thereof.
The compounds are cardiovascular agents useful, for example, in the treatment of thrombolytic disease.
The present invention refers to aryl beta diketones of the formula (I)
wherein Y, R1, R2 and R3 have the meaning
R1 is selected from the group consisting of hydrogen, C1-C4 alkyl, hydroxyl, methoxy, CF3 and F;
R2 is selected from the group consisting of methyl and ethyl;
R3 is selected from the group consisting of methyl and ethyl; and
Y is a bivalent residue selected from the group consisting of
—C(O)—; —CH2═CH2—C(O)—; —CRIRII—C(O)—, wherein RI and RII are independently selected from hydrogen and methyl; and —CHRIII—CHRIV—C(O)—, wherein RIII and RIV are independently selected from hydrogen and methyl with the proviso, that RIII═RIV are hydrogen or either RIII or RIV is methyl. The invention further refers to fragrance compositions and fragranced articles comprising them.