Esters comprising a secondary carbamoyl function and their use as odorant alcohol precursors
申请人:——
公开号:US20020144360A1
公开(公告)日:2002-10-10
The compounds of the formula
1
in which the dotted line indicates the location of a single or double bond; R
1
represents a radical derived from an odoriferous alcohol of the formula R
1
OH; R
2
represents a hydrogen atom, a linear or branched, saturated or unsaturated C
1
-C
30
hydrocarbon radical, or an aliphatic or aromatic cyclic compound having 5 or 6 carbon atoms, this radical R
2
possibly comprising heteroatoms of oxygen, sulphur or nitrogen; the symbols R
3
, R
4
and R
4
′, considered independently, represent a hydrogen atom, a linear or branched, saturated or unsaturated, if necessary substituted, C
1
to C
20
hydrocarbon radical possibly comprising one or more heteroatoms, or, when considered together with the carbon atoms to which they are bonded, can form aromatic or aliphatic monocyclic, bicyclic or tricyclic compounds, the radicals R
3
, R
4
and R
4
′ possibly comprising functional groups of the ester and carbamoyl type so as to liberate several molecules of odoriferous alcohol R
1
OH per single molecule of precursor, are new compounds capable of liberating an odoriferous alcohol of the formula R
1
OH upon hydrolysis of the ester bond.
化学式1所表示的化合物中,虚线表示单键或双键的位置;R1代表从具有化学式R1OH的芳香醇中衍生的基团;R2代表氢原子,线性或支链的饱和或不饱和的C1-C30烃基,或具有5或6个碳原子的脂环或芳环化合物,该基团R2可能包含氧、硫或氮等杂原子;符号R3、R4和R4'分别独立地表示氢原子,线性或支链的饱和或不饱和的,必要时取代的C1到C20烃基,可能包含一个或多个杂原子,或者与它们结合的碳原子一起形成芳香或脂环的单环、双环或三环化合物,基团R3、R4和R4'可能包含酯和氨基甲酸酯类型的官能团,以便每个前体分子释放数分子芳香醇R1OH,这些化合物是能够在酯键水解时释放化学式R1OH的芳香醇的新化合物。