| abstract |
Use of 3-hydroxy-2,2-dimethylpropionate esters of formula HOCH2-CMe2-COOR (I) as fragrances is new (where R is opt. unsatd. 1-5C alkyl). Propyl 3-hydroxy-2,2-dimethylpropionate (Ia) is also new. Claimed perfume compsns. contain 1-50 wt.% (I). Prepn. of (Ia) can be effected by (a) reacting 3-hydroxy-2,2-dimethylpropionic acid (II) with PrOH in the presence of a strong acid, (b) transesterifying (I; R=Me) with PrOH, or (c) transesterifying the neopentylglycol ester of (II) with PrOH. (I) can be used in perfumes, cosmetics, detergents, disinfectants, textile-treating compsns., etc., giving interesting new aroma notes, e.g. (Ia) has blackcurrant and jum juniper notes. |