CAS: 68527-76-4; 2-Ethoxy-4-(4-Methyl-1,3-Dioxolan-2-yl)Phenol

乙基香兰素,1,2-丙二醇置于mixture Of Acetic Anhydride And Phosphoric Acid Composite Catalyst体系中,用 甲苯 作为反应溶剂,化学反应 20.0H,以98%的收率获得产物乙基香兰素丙二醇缩醛
参考文献:一种乙基香兰素1,2-丙二醇缩醛的制备方法
标题:一种乙基香兰素1,2-丙二醇缩醛的制备方法
摘要:本发明涉及香料技术领域,公开了一种乙基香兰素1,2‑丙二醇的制备方法.该制备方法包括以下步骤:将乙基香兰素和1,2‑丙二醇溶于有机溶剂中,在复合催化剂作用下经缩合反应制得所述乙基香兰素1,2‑丙二醇缩醛;所述复合催化剂为醋酐和磷酸的混合物.本发明的优点是改进了传统的合成方法,使用廉价的磷酸和醋酐制成复合催化剂,反应方法简单,反应过程易于控制,反应收率高达98%,适合工业化生产.

专利信息

专利号:WO-2015051525-A1
优先权日:2013-10-11
标 题 :Synthesis of acetal/ketal
发明人：ZHOU WENJUAN; FANG LIN; CLACENS JEAN-MARC; BONNEVIOT LAURENT; DECAMPO FLORYAN
权利人:RHODIA OPERATIONS; CENTRE NAT RECH SCIENT; ECOLE NORMALE SUPERIEUR DE LYON ENSL
摘要:The present invention concerns a process for preparing cyclic acetal or ketal by reacting a carbonyl compound (a) with a polyol (b), wherein said carbonyl compound (a) and polyol (b) are forming a biphasic liquid system when mixed together, comprising at least the following steps: a) Producing a carbonyl compound (a) / polyol (b) emulsion by using as stabilizing species amphiphilic solid particles of nanometric dimension and optionally a catalyst X; b) Proceeding to the reaction to produce cyclic acetal or ketal, notably by setting temperature, and c) Isolating the resulting compounds.

专利号:US-2023233438-A1
优先权日:2021-08-23
标题:Oral care compositions for gum health
发明人：BIESBROCK AARON REED; SHI YUNMING; STRAND ROSS
权利人:PROCTER & GAMBLE
摘要:An oral care composition with retinoid compound, amino acid, and/or olive oil. An oral care composition with retinoid compound, a pentapeptide, such as palmitoyl KTTKS [SEQ ID NO. 2], and/or an olive oil. Methods of preventing gingival recession, stopping gingival recession, reversing gingival recession, decrease gum recession, increase gingival barrier protection, promoting collagen synthesis, promoting extracellular matrix synthesis, increasing gum resilience, increasing epidermal thickness and/or promoting fibrillin synthesis, in an oral cavity of an animal by contacting the oral care compositions with at least one surface of the oral cavity.