Dalavoy, V. S.; Deodhar, V. B.; Nayak, U. R., Indian Journal of Chemistry, Section B: Organic Chemistry Including Medicinal Chemistry, 1987, vol. 26, # 1-12, p. 1 - 4
Serine carbonates of formula I are precursors for organoleptic compounds, masking agents and antimicrobial agents. Further they are alternative substrates for malodor producing enzymes. The symbols in formula I are defined in claim 1.
The invention is directed to the field of pro-fragrances used in detergents and cleaning agents, cosmetic agents and air fresheners, for example. The invention relates to particular cyclic ketals used as pro-fragrances. The invention also relates to detergents and cleaning agents, cosmetic agents and air fresheners containing ketals of the type. The invention further relates to a method for creating a long-lasting fragrance on surfaces and for repelling insects.
The compounds of the formula I
are precursors for organoleptic and antimicrobial compounds. The latter are generated in the presence of skin bacteria, enzymes or acidic or alkaline conditions. One precursor molecule can provide one or more different compounds.
式 I 的化合物
是感官和抗菌化合物的前体。后者在皮肤细菌、酶或酸性或碱性条件下生成。一个前体分子可以提供一种或多种不同的化合物。
Precursor Compounds
申请人:GIVAUDAN-ROURE (INTERNATIONAL) SA
公开号:EP0887336A1
公开(公告)日:1998-12-30
The compounds of the formula I
are precursors for organoleptic and antimicrobial compounds. The latter are generated in the presence of skin bacteria, enzymes or acidic or alkaline conditions. One precursor molecule can provide one or more different compounds.
式 I 的化合物
是感官和抗菌化合物的前体。后者在皮肤细菌、酶或酸性或碱性条件下生成。一个前体分子可以提供一种或多种不同的化合物。
Fragrance precursor compounds
申请人:GIVAUDAN-ROURE (INTERNATIONAL) S.A.
公开号:EP0878497A2
公开(公告)日:1998-11-18
The invention relates to organosiloxane fragrance precursor compounds having at least one organosiloxane unit of the formula
or a mixture thereof and if any other siloxane unit(s) in the said organosiloxanes being present this/these is/are of formula
wherein R represents a substituted or unsubstituted C1-8 alkyl group or a substituted or unsubstituted aryl group, R represents a hydrogen atom, a monovalent C1-8 hydrocarbon group or a monovalent C1-8 halogenated hydrocarbon group; R1 represents a hydrogen atom or a substituted or unsubstituted C1-8 alkyl group or a substituted or unsubstituted aryl group or a bond connecting CR1 and CR3; R3 represents a hydrogen atom or a substituted or unsubstituted C1-8 alkyl group or a substituted or unsubstituted aryl group; A represents (CR42)n whereby R4 represents a substituted or unsubstituted C1-8 alkyl group or a substituted or unsubstituted aryl group or a hydrogen atom and whereby n has a value of 0-20 and each R4 is the same or different; OR2 represents the residue of an olfactive alcohol or of the enol form of an olfactive aldehyde or olfactive ketone; a has a value of 0,1 or 2; b has a value of 0, 1, 2 or 3, the use of at least one of the compounds as a fragrance precursor in a cosmetic composition or cosmetic product, laundry product, detergent or fabric softener and to a cosmetic product, a laundry product, a detergent or a fabric softener containing at least one of the compounds.