CAS: 63449-41-2; Benzalkonium Chloride

相似化合物

139-08-2 139-07-1 22559-57-5

专利信息

专利号:US-11760707-B2
优先权日:2019-11-13
标题 :Process for the synthesis of 2,3,3,3-tetrafluoropropene
发明人：ZHOU CHANGYUE; WANG YONG
权利人:FUJIAN YONGJING TECH CO LTD
摘要:The present invention pertains to a novel process of manufacturing the compound 2,3,3,3-tetrafluoropropene (1234yf). The compound 1234yf is the newest refrigerant with zero OPD (Ozone Depleting Potential) and zero GWP (Global Warming Potential). Thus, the invention relates to a process, involving a carbene generation route, for the manufacture of the compound 2,3,3,3-tetrafluoropropene (1234yf), of the compound 243db (2,3-dichloro-1,1,1-trifluoropropane), and optionally of the compound 2-chloro-1,1,1-trifluoropropene (1233xf) via carbene route and compound 243db (2,3-dichloro-1,1,1-trifluoropropane). The invention also relates to a process for the manufacture of the compound 2,3,3,3-tetrafluoropropene (1234yf), wherein the compound 243db (2,3-dichloro-1,1,1-trifluoropropane) serves as a starting material, for the manufacture of the compound 2,3,3,3-tetrafluoropropene (1234yf). Further, the invention relates to a process for the manufacture of the compound 2,3,3,3-tetrafluoropropene (1234yf), and of the compound 243db (2,3-dichloro-1,1,1-trifluoropropane), the initial starting materials are selected from the group consisting of com-pound 123 (2,2-dichloro-1,1,1-trifluoroethane), compound 124 (2-chloro-1,1,1,2-tetrafluoroethane), and compound 125 (pentafluoroethane).

专利号:US-12286399-B2
优先权日:2023-01-29
标 题:Synthesis of (R)(+)-2-(4-chloro-2-methyl phenoxy)propanoic acid in high enantiomeric excess
发明人：PATEL-FRAMROZE BOMI
权利人:PATEL FRAMROZE BOMI
摘要:Provided herein is a process to react optical active chloroalkyl acid alkyl ester and substituted phenols in an aromatic solvent in the presence of a catalytic quantity of a quaternary ammonium salt to yield an optically active substituted phenoxy alkyl acid.

专利号:US-2008214386-A1
优先权日:2004-03-01
标题:Catalyst for Cyclic Carbonate Synthesis
发明人：TAKAHASHI TOSHIKAZU; WATAHIKI TSUTOMU; YASUDA HIROYUKI; SAKAKURA TOSHIYASU
权利人:TAKAHASHI TOSHIKAZU; WATAHIKI TSUTOMU; YASUDA HIROYUKI; SAKAKURA TOSHIYASU
摘要:Provided are a solid catalyst which gives a cyclic carbonate at a high yield and a high selectivity, which is stable and which may be readily separated after reaction; and a method of industrially advantageous, inexpensive and safe production of a cyclic carbonate by the use of the catalyst. The catalyst contains an inorganic solid substance having a surface modified with an ionic substance containing a Group 15 element; or contains an ionic substance containing a Group 15 element, and an inorganic solid substance. The modifying group for surface modification of an inorganic solid substance is an ionic substance containing a Group 15 element. The ionic substance containing a Group 15 element is at least one substance selected from organic phosphonium salts, organic ammonium salts, organic arsonium salts and organic antimonium salts.

专利号:US-2024254069-A1
优先权日:2023-01-29
标题 :Synthesis of (r)(+)-2-(4-chloro-2-methyl phenoxy)propanoic acid in high enantiomeric excess

专利号:US-4684724-A
优先权日:1981-12-25
标题:4-Cyano-2-azetidinones and production thereof
发明人：OCHIAI MICHIHIKO; KISHIMOTO SHOJI; MATSUO TAISUKE
权利人:TAKEDA CHEMICAL INDUSTRIES LTD
摘要:4-Cyano-2-azetidinone derivatives represented by the formula ##STR1## wherein R 1 is an amino group which may be acylated or protected, X is a hydrogen atom or a methoxy group and W is a hydrogen atom or a sulfo group, and methods of producing the same, for example, as represented by ##STR2## wherein R 2 is an acylated or protected amino group, Y is a halogen atom or a group having the formula --OCOR 3 , --SCOR 3 or --S(O) n --R 3 (R 3 being a hydrocarbyl group and n an integer 1 or 2), R 4 is an amino group which may be acylated or protected and X is as defined above. Compounds [I] are useful as advantageous intermediates for the synthesis of optically active 4-substituted-2-azetidinone derivatives, and, when W=SO 3 H, [I] are also useful as antimicrobial agents and as beta-lactamase inhibitors.

专利号:US-2021139397-A1
优先权日:2019-11-13
标题:Process for the synthesis of 2,3,3,3-tetrafluoropropene