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    • 1. 发明授权
    • Process for producing alicyclic monoketones and process for producing alicyclic diketones
    • 生产脂环族单酮的方法和生产脂环族二酮的方法
    • US06313351B1
    • 2001-11-06
    • US09389079
    • 1999-09-02
    • Norimoto KiyaShinsaku KawasakiKenji EkawaKenji SugiyamaToyokazu Kitaura
    • Norimoto KiyaShinsaku KawasakiKenji EkawaKenji SugiyamaToyokazu Kitaura
    • C07C4562
    • C07C45/00B01J23/58C07C49/417C07C49/517C07C49/747C07C49/753C07C315/04C07C2601/14C07C317/22
    • The process for producing alicyclic monoketones (hydroxyphenylcyclohexanone derivatives) according to the present invention comprises hydrogenating substituted bisphenols such as bisphenol A in a solvent in the presence of a palladium/alkali metal catalyst in which palladium and an alkali metal are both supported on a carrier to obtain alicyclic monoketones such as 2-(4-oxocyclohexyl)-2-(4-hydroxyphenyl)propane. The process for producing alicyclic diketones according to the present invention comprises hydrogenating substituted bisphenols such as bisphenol A in a solvent in the presence of a palladium/alkali metal catalyst in which palladium and an alkali metal are both supported on a carrier to obtain alicyclic diketones such as 2,2-bis(4-oxocyclohexyl)propane and 4,4′-bicyclohexanone. The other process for producing alicyclic monoketones according to the present invention comprises hydrogenating biphenols such as bis(4-hydroxyphenyl) in an organic solvent in the presence of a palladium catalyst in which 10 to 30% by weight of palladium is supported on a carrier to obtain alicyclic monoketones such as 4(4′-hydroxyphenyl)cyclohexanone. According to the present invention, alicyclic monoketones or alicyclic diketones can be obtained with high selectivity and in high yields through simple steps, because the process includes only one reaction step to hydrogenate substituted bisphenols under relatively mild conditions.
    • 本发明的脂环式单酮类(羟基苯基环己酮衍生物)的制造方法包括在钯/碱金属催化剂的存在下,在载体上负载钯/碱金属催化剂的情况下,在溶剂中,氢化取代的双酚,例如双酚A, 得到2-(4-氧代环己基)-2-(4-羟基苯基)丙烷等脂环族单酮。 根据本发明的制备脂环族二酮的方法包括在钯/碱金属催化剂的存在下在溶剂中将取代的双酚如双酚A氢化,其中钯和碱金属都负载在载体上,以获得脂环族二酮 作为2,2-双(4-氧代环己基)丙烷和4,4'-二环己酮。 根据本发明的其它生产脂环族单酮的方法包括在钯催化剂存在下,在有机溶剂中,将双酚如双(4-羟基苯基)氢化,其中载体上载有10〜30重量%的钯, 得到脂环族单酮如4(4'-羟基苯基)环己酮。 根据本发明,可以通过简单的步骤以高选择性和高产率获得脂环族单酮或脂环族二酮,因为该方法仅包括在相对温和的条件下氢化取代的双酚的一个反应步骤。
    • 4. 发明授权
    • Process for preparing intermediates useful in the synthesis of vitamin D compounds
    • 制备可用于合成维生素D化合物的中间体的方法
    • US06284928B1
    • 2001-09-04
    • US09501359
    • 2000-02-10
    • Andrzej Robert Daniewski
    • Andrzej Robert Daniewski
    • C07C4562
    • C07C45/62C07C45/63C07C49/443C07C49/477
    • The invention relates to an improved process for preparing [(3aR,4S,7aS)4-bromooctahydro-7a-methyl-1H-indene-1,5-dione]. (S)-(+)-2,3,7,7a-tetrahydro-7a-methyl-1H-indene-1,5(6H)-dione is reduced by reaction with diisobutylaluminum hydride and hexamethylphosphoric triaminde in the presence of a catalyst of the formula R—Cu, wherein R is and R1, R2 and R3 are each, independently, selected from the group consisting of C1-7 alkyl, phenyl, phenyl substituted by at least one C1-4 alkyl group, benzyl, or benzyl substituted by at at least one C1-4 alkyl group to form a reductate. The reductate is then treated with a bromine-containing electrophile to yield (3aR,4S,7aS)4-bromooctahydro-7a-methyl-1H-indene-1,5-dione.
    • 本发明涉及制备[(3aR,4S,7aS)4-溴八氢-7a-甲基-1H-茚-1,5-二酮]的改进方法。 (S) - (+) - 2,3,7,7a-四氢-7a-甲基-1H-茚-1H(6H) - 二酮在催化剂存在下与二异丁基氢化铝和六甲基磷酸三 的式R-Cu,其中R是和R 1,R 2和R 3各自独立地选自C 1-7烷基,苯基,被至少一个C 1-4烷基取代的苯基,苄基或苄基取代的 在至少一个C 1-4烷基上形成还原物。 然后用含溴亲电子试剂处理还原物,得到(3aR,4S,7aS)4-溴八氢-7a-甲基-1H-茚-1,5-二酮。