CAS: 12092-47-6; (1,5-Cyclooctadiene)Rhodium Chloride Dimer

上下游产品

CAS号80319-87-5 (2Z,6E,10E)-1-b... | CAS号12107-56-1 (1,5-环辛二烯)氯化钯(II) | CAS号115338-66-4 rhodium{C6H3(CH... | CAS号26042-63-7 六氟磷酸银 | CAS号14243-64-2 三苯基膦氯金 | CAS号34710-33-3 cis-[PdCl2(CN(t... | CAS号81229-43-8 Rh2(1,5-cyclo°C... | CAS号124225-83-8 bis(3,5-dimethy... | CAS号108559-48-4 (1Z,5Z)-cyclo°C... | CAS号32679-02-0 二(乙腈)(1,5-环辛二烯)... | CAS号37737-62-5 O-亚苯基硼酸盐 | CAS号2049-55-0 三苯基膦硼烷 | CAS号33409-86-8 cyclo°Cta-1,5-d... | CAS号31781-57-4 orange crystal | CAS号14694-95-2 三苯基膦氯化铑 | CAS号34964-03-9 Rhodium, [bis[3... | CAS号75-77-4 三甲基氯硅烷

专利信息

专利号:US-4879389-A
优先权日:1986-06-25
标题:Chiral phosphinopyrrolidine compounds and their use for asymmetric synthesis of optically active compounds
发明人：ACHIWA KAZUO
权利人:ACHIWA KAZUO
摘要:New chiral phosphinopyrrolidine compounds of the general formula: (I) or (I') wherein R1 is a hydrogen atom, -COR, -COOR, -CONHR or -SO2-R where R is an alkyl or aryl group, R2 and R3 each represents independently an aryl group which may have a substituent or substituents, and R4 and R5 each represents independently an aliphatic or cycloaliphatic hydrocarbyl group which may have a substituent or substituents, as well as the use of these compounds as ligand for a metal complex catalyst for asymmetric synthesis of optically active compounds. The new chiral phosphinopyrrolidine compounds are useful ligands which attain both of high optical yield and high reaction efficiency in catalytic asymmetric reduction.

专利号:US-4985567-A
优先权日:1988-03-07
标题:Chiral phosphinopyrrolidine compounds and their use for asymmetric synthesis of optically active compounds
发明人：ACHIWA KAZUO; TAKEDA HIDEO
权利人:KAZUO ACHIWA; FUJI YAKUHIN KOGYO KK
摘要:New chiral phosphinopyrrolidine compounds of the general formula: ##STR1## wherein R 1 is hydrogen or --COA 1 , --COOA 2 , --CONHA 3 , --SO 2 A 4 or --PO(A 5 ) 2 , A 1 , A 2 , A 3 , A 4 and A 5 each represents independently alkyl or aryl, R 2 is phenyl, di(lower-alkyl)aminophenyl, lower-alkoxyphenyl or 3,5-dimethyl-4-methoxyphenyl, and R 3 is phenyl, lower-alkylphenyl, di(lower-alkyl)aminophenyl, lower-alkoxyphenyl or 3,5-dimethyl-4-methoxyphenyl, with the proviso that R 2 and R 3 may not simultaneously by phenyl, p-di(lower-alkyl)-aminophenyl or p-lower-alkoxyphenyl, as well as the use of these compounds as ligand for a metal complex catalyst for asymmetric synthesis of optically active compounds. The new chiral phosphinopyrrolidine compounds are useful ligands which attain both of high optical yield and high reaction efficiency in catalytic asymmetric reduction.

专利号:US-11078178-B2
优先权日:2017-09-04
标 题 :6-chromanol derivatives and their synthesis
发明人：BEUMER RAPHAEL; BONRATH WERNER; DELPHO JAN-MARC; JORAY MARCEL; MEDLOCK JONATHAN ALAN; NETSCHER THOMAS; SORIANO DOMENICO; STEMMLER RENÉ TOBIAS
权利人:DSM IP ASSETS BV
摘要:The present invention relates to novel compounds which are particularly useful for the synthesis of novel chromanol derivatives. These compounds have interesting properties. Particularly, the novel chromanol derivatives have interesting antioxidant properties as well as flavours and fragrances.

专利号:US-7468459-B2
优先权日:2003-03-19
标题:Process for the preparation of chiral beta amino acid derivatives by asymmetric hydrogenation
发明人：XIAO YI; ARMSTRONG III JOSEPH D; KRSKA SHANE W; NJOLITO EUGENIA; RIVERA NELO R; SUN YONGKUI; ROSNER THORSTEN
权利人:MERCK & CO INC
摘要:The present invention relates to a process for the efficient preparation of enantiomerically enriched beta amino acid derivatives which are useful in the asymmetric synthesis of biologically active molecules. The process comprises an enantioselective hydrogenation of a prochiral beta amino acrylic acid derivative substrate in the presence of a transition metal precursor complexed with a chiral ferrocenyl diphosphine ligand.

专利号:US-5684185-A
优先权日:1992-10-01
标题 :Process for the stereoselective synthesis of 3-substituted 2-sulfonylmethylpropionic acids, and intermediate products
发明人：BECK GERHARD; JENDRALLA JOACHIM-HEINER; KAMMERMEIER BERNHARD
权利人:HOECHST AG
摘要:Compounds of the formula I ##STR1## can be prepared in a multi-day process starting from the compounds of the formulae II and III n n R.sup.1 --SH, II n n ##STR2## where the substituents R 1 , R 2 and R 3 have the meanings given.

专利号:US-5321139-A
优先权日:1991-05-03
标题 :Process for the enantioselective synthesis of 2(R)-benzylsuccinic acid monoamide derivatives
发明人：LERCH ULRICH; JENDRALLA HEINER; SEURING BERNHARD; HENNING RAINER
权利人:HOECHST AG
摘要:Two processes are described for the preparation of the optically pure compounds of formula 1: (1) in which R1 and R2 are e.g. alkyl, R3 and R4 are e.g. hydrogen and R5 is e.g. hydrogen. Both processes include, as key steps, the enantioselective hydrogenation of a C=C double bond and the regioselective formation of a dicarboxylic acid monoamide derivative. In one process a phenylitaconic acid derivative is asymmetrically hydrogenated to give an optically active (R)-benzylsuccinic acid which is then converted to a diester, said diester being converted to the monoamide compound of formula 1. In the second process, a phenylitaconic acid derivative is converted to its anhydride, and the anhydride is then converted to a monoamide which is then asymmetrically hydrogenated to give the compound of formula 1.