申请人:——
公开号:US20020077508A1
公开(公告)日:2002-06-20
The present invention is a fragrance precursor of formula I:
1
for a fragrant ketone of formula II:
2
and a fragrant ester of formula III:
3
wherein,
R
1
to R
5
represent independently H, —NO
2
, linear or branched C
1
-C
6
-alkyl, C
1
-C
6
-alkenyl, C
1
-C
6
-alkinyl or C
1
-C
4
-alkoxy,
R
1
and R
2
, R
2
and R
3
, R
3
and R
4
, and R
4
and R
5
may form together one or two aliphatic or aromatic rings,
R
6
and R
7
are independently H, linear or branched C
1
-C
6
-alkyl-, C
1
-C
6
-alkenyl, C
1
-C
6
-alkinyl, and
R
8
and R
9
are the residues of an acid R
8
-COOH and an alcohol R
9
OH respectively forming the fragrant ester of formula III. A method for providing an odor by admixing with a product a fragrance precursor as detailed above.
本发明涉及一种香气前体,其化学式为I:1,用于制备化学式为II:2的芳香酮和化学式为III:3的芳香酯,其中,R1至R5分别独立表示H,—NO2,直链或支链C1-C6-烷基,C1-C6-烯基,C1-C6-炔基或C1-C4-烷氧基,R1和R2,R2和R3,R3和R4以及R4和R5可以共同形成一个或两个脂肪族或芳香族环,R6和R7分别表示H,直链或支链C1-C6-烷基,C1-C6-烯基,C1-C6-炔基,R8和R9分别表示酸R8-COOH和醇R9OH的残基,形成化学式III的芳香酯。本发明还涉及一种通过将上述详细描述的香气前体与产品混合来提供气味的方法。