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    • 40. 发明申请
    • PROCESS FOR PREPARING (R OR S)-2-ALKYL-3-HETEROCYCLYL-1-PROPANOLS
    • 制备(R或S)-2-烷基-3-环己基-1-丙醇的方法
    • WO2008077917A1
    • 2008-07-03
    • PCT/EP2007/064405
    • 2007-12-21
    • SPEEDEL EXPERIMENTA AGHEROLD, PeterSTUTZ, StefanMAH, Robert
    • HEROLD, PeterSTUTZ, StefanMAH, Robert
    • C07D231/56C07D209/08C07D471/04
    • C07D231/56C07D209/08C07D471/04
    • Compounds of the formula (I) in which R' 1 , R' 2 ,R' 3 and Het are each defined as specified in the description are obtainable in high yields by a stereoselective addition of R' 3 -substituted propionic esters onto R' 1 - and R' 2 -substituted unsaturated, bicyclic heterocyclylaldehydes of the formula R-CHO to give corresponding 3-(R)-3-hydroxy-2-R' 3 -propionic esters. Conversion of the OH group to a leaving group, a subsequent regioselective elimination to give 3-(R)-2-R' 3 -propenoic esters, followed by: 1) hydrolysis to the corresponding 3-(R)-2-R' 3 -propenoic acids, their enantioselective hydrogenation to corresponding chiral 3-(R)-2-R' 3 -propenoic acids and their reduction, or 2) hydrolysis to the corresponding 3-(R)-2-R' 3 -propenoic acids, their reduction to corresponding 3-(R)-2-R' 3 -allylalcohols and their enantioselective hydrogenation, or 3) reduction to corresponding 3-(R)-2-R' 3 -allylalcohols and their enantioselective hydrogenation, where R is formula (II) and the enantioselective hydrogenations are performed with metal complexes which have, as ligands, ferrocene-1,1'-diphosphines which have, in the 1-position, a ferrocene-substituted secondary phosphine group and, in the1'-position, a secondary phosphine group.
    • 其中R'1,R'2,R'3和Het的式(I)化合物各自如 可通过立体选择性加成R 1'3 - 取代的丙酸酯在R'1 - 和R'2 - 取代的 不饱和的双环杂环基醛,其具有式R-CHO,得到相应的3-(R)-3-羟基-2R'3'-丙酸酯。 将OH基转化为离去基团,随后进行区域选择性消除,得到3-(R)-2-R'3 - 丙烯酸酯,然后:1)水解至相应的3-( R)-2-R“3 - 丙烯酸,其相应的手性3-(R)-2-R” - 亚丙酸的对映选择性氢化及其还原, 或2)水解成相应的3-(R)-2-R'3 - 丙烯酸,它们还原成相应的3-(R)-2-R'3 - 或其对映选择性氢化,或3)还原为相应的3-(R)-2-R“3 - 烯丙醇及其对映选择性氢化,其中R为式(II)和对映选择性氢化 以具有二茂铁取代的次膦基1位的二茂铁-1,1'-二膦作为配位体,在1位具有仲膦基的金属络合物进行。