专利号:US-2005112158-A1 优先权日:2003-11-17 标 题 :Method for synthesis of silylated ascorbic acid derivatives 发明人:TERRY W L JR; LEGROW GARY E; LITTAU CHERYL 权利人:CLARIANT INTERNATINONAL LTD 摘要:A compound of Formula (I), as defined in the specification, and a method for its synthesis. The method includes providing an inert environment, minimizing exposure of the reaction environment to visible light and reacting ascorbic acid with solvent and a compound of the Formula (II), as defined in the specification. The method of the present invention produces increased yields and a compound having increased stability and the same or greater bioactivity than ascorbic acid. The compound formed by the method of the present invention is capable for use in anhydrous cosmetic, dermatological and pharmaceutical compositions as an active agent for combating aging of the skin and improving its aesthetic appearance.
专利号:US-9499643-B2 优先权日:2010-01-08 标题 :Method for preparing carbene in solution, novel stable form of carbene obtained in particular by means of said method, and uses thereof in catalysis 发明人:MALIVERNEY CHRISTIAN; SAINT-JALMES LAURENT; GOJON SOPHIE; KATO TSUYOSHI; BACEIREDO ANTOINE J 权利人:MALIVERNEY CHRISTIAN; SAINT-JALMES LAURENT; GOJON SOPHIE; KATO TSUYOSHI; BACEIREDO ANTOINE J; BLUESTAR SILICONES FRANCE; CENTRE NAT RECH SCIENT 摘要:The invention relates to a method for preparing carbene by means of deprotonation of a precursor salt using a strong base. A purpose of the invention is to enhance the synthesis of carbenes, i.e. to simplify same, to make said synthesis more economical and to obtain a liquid or solid, stable and pure form constituting a catalytic system that is easy to store and use and that has a higher efficiency, higher yield and higher selectivity than carbene catalysts of the prior art. In order to do so, the method comprises deprotonation in a solvent including an alcohol. The invention also relates to an alcohol-containing solution and carbene, and to a solid that can be obtained from the solution, e.g. by means of sublimation.
专利号:US-2023111600-A1 优先权日:2019-12-17 标题 :Polymeric fatty acid compounds for the treatment of fibrous amino acid-based substrates, especially hair 发明人:WAGNER ROLAND; STREICHER KATHARINA; ROHMANN LAURA; WENSKE CHRISTIAN; HAVELI SHRUTISAGAR DATTATRAYA 权利人:MOMENTIVE PERFORMANCE MAT GMBH 摘要:The present invention is directed at mono-, di- or polyquaternary ammonium compounds of the formula (I) wherein x is 1 to 50, and F can be the same or different and is represented by the general formula (II) wherein at least one of the optionally substituted and optionally functional-group-containing hydrocarbon radicals R 1 , R 2 , R 3 , R 4 or R 5 contains at least one estolide moiety comprising two or more ester or amide moieties. The invention also relates to a process for the synthesis of such compounds, the use of the compounds in cosmetic formulations for skin and hair care, cosmetic compositions for the treatment of fibers, and compositions containing one or more of the compounds for the treatment of hair.
专利号:JP-2005145971-A 优先权日:2003-11-17 标题:Method for the synthesis of silylated ascorbic acid derivatives
专利号:EP-1531156-A1 优先权日:2003-11-17 标题 :Method for synthesis of silylated ascorbic acid derivatives
专利号:US-12371446-B2 优先权日:2019-12-18 标 题 :Catalyst particles and methods for dehydrogenative silylation 发明人:WITKER DAVID LAWRENCE 权利人:DOW SILICONES CORP 摘要:A method of preparing catalyst particles (the “preparation methodâ€?) is disclosed. The preparation method comprises combining a Ru(0) complex and a carrier fluid to form a mixture and heating the mixture at an elevated temperature to nucleate the Ru(0) complex and give the catalyst particles in the carrier fluid. The preparation method optionally comprises isolating the catalyst particles from the carrier fluid. A method of preparing an organosilicon compound via dehydrogenative silylation with the catalyst particles (the “synthesis methodâ€?) is also disclosed. The synthesis method comprises reacting (A) an organohydridochlorosilane compound and (B) an alkene compound in the presence of (C) a catalyst, thereby preparing the organosilicon compound. The catalyst (C) of the synthesis method comprises the catalyst particles prepared by the preparation method.
摘要:Baudrenghien, L.; Markó, I. E., Science of Synthesis: N-Heterocyclic Carbenes in Catalytic Organic Synthesis, (2016) 1, 311. 摘要:Baudrenghien, L.; Markó, I. E., Science of Synthesis: N-Heterocyclic Carbenes in Catalytic Organic Synthesis, (2016) 1, 309. 摘要:Final Report 03/2022 Available from CIR 摘要:Cheng, Z.; Li, M.; Lu, Z., Science of Synthesis: Base-Metal Catalysis, (2023) 2, 53.