[EN] PRO-PERFUME COMPOSITIONS<br/>[FR] COMPOSITIONS DE PROPARFUM
申请人:FIRMENICH & CIE
公开号:WO2021123144A1
公开(公告)日:2021-06-24
The present invention relates to a perfuming composition comprising at least two properfume compounds selected from the group consisting of a pro-perfume compound releasing a perfume compound upon exposure to light, a pro-perfume compound releasing a perfume compound upon exposure to air/oxygen, a pro-perfume compound releasing a perfume compound upon exposure to heat, a pro-perfume compound releasing a perfume compound upon exposure to moisture and a pro-perfume compound releasing a perfume compound upon exposure to enzymes. The present invention further concerns a perfumed consumer product comprising the inventive perfuming composition, as well as the use of the inventive perfuming composition for improving, enhancing, conferring and/or modifying the fragrance impression and/or fragrance intensity of a consumer product.
Metal-Free Oxidative Esterification of Ketones and Potassium Xanthates: Selective Synthesis of α-Ketoesters and Esters
作者:Xianglin Luo、Runfa He、Qiang Liu、Yanping Gao、Jingqing Li、Xiuwen Chen、Zhongzhi Zhu、Yubing Huang、Yibiao Li
DOI:10.1021/acs.joc.9b03272
日期:2020.4.17
A novel and efficient oxidative esterification for the selectivesynthesis of α-ketoesters and esters has been developed under metal-free conditions. In the protocol, various α-ketoesters and esters are available in high yields from commercially available ketones and potassium xanthates. Mechanistic studies have proven that potassium xanthate not only promotes oxidative esterification but also provides
The present invention relates to core-shell microcapsules comprising photolabile 2-oxoacetate pro-fragrance molecules capable of liberating an active molecule such as, for example, an aldehyde or ketone upon exposure to light. The present invention concerns also the use of said microcapsules in perfumery as well as the perfuming compositions or perfumed articles comprising the invention's microcapsules to provide a prolonged release of fragrant aldehydes and/or ketones.