Fragrance precursors

Details Fragrance precursors Fragrance precursors

2005-09-06

2005-09-06

Cole, Monique T. (Department: 1743)

Perfume compositions

Perfume compositions

Oxygen containing active ingredient

C512S002000, C568S303000, C568S308000, C568S325000, C568S326000, C568S327000, C568S328000, C568S329000, C568S331000, C568S337000, C568S376000, C568S377000, C568S579000, C568S626000, C568S659000, C568S660000, C568S664000, C568S665000, C568S670000

Reexamination Certificate

active

06939845

ABSTRACT:
The present invention provides a fragrance precursor of formula I:that is capable of forming a fragrant ketone of formula II:and a fragrant lactone of formula III:

REFERENCES:
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patent: 0 936 211 (1999-08-01), None
patent: WO 99/60990 (1999-12-01), None
Greene, T.W.,Protective Groups in Organic Synthesis, 2nd Edition, 31-34 (1991).
Dixon, D.D., et al.,Synlett, 1093-1095 (1998).
Brunckova, J., et al.,Tetrahedron, 51, 11945-52 (1995).
Cowper, R.M., et al.,Org. Synth. Coll., 2:480-81 (1943).
Noe, V.C.R., et al.,Angew. Chem., 100: 1431-1433 (1988).
B.T. Cho et al.: Tetrahedron: Asymmetry 10 (1999) 1843-1846, “A practical method for synthesis of terminal 1,2-diols in high enantiomeric excess via oxazaborolidine-catalyzed asymmetric reduction”.

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