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公开(公告)号：US06344505B1
公开(公告)日：2002-02-05
申请号：US09438754
申请日：1999-11-11
IPC分类号： C08K534
CPC分类号： C07D249/20 , C08K5/3475
摘要： Provided is a composition which contains a mono- or bis-benzotriazole compound, an N-oxide thereof, or a mixture of at least two of the preceding compounds. Representative bis-benzotriazole compounds include 3,3′-bis-(2H-benzotriazol-2-yl)-5,5′-di-tert-octyl-1,1′-biphenyl-2,2′-diols. Representative mono-benzotriazole compounds include 3-(2H-benzotriazol-2-yl)-5,5′-di-tert-octyl-1,1′-biphenyl-2,2′-diols. These mono- and bis-benzotriazole compounds are useful as stabilizers of degradable polymers against the degradative action of ultraviolet light. Also provided is a method of making these benzotriazole compounds by oxidative dimerization of the corresponding monomeric benzotriazole or by reductive cyclization of the corresponding azo- compound.
摘要翻译： 本发明提供含有单 - 或双 - 苯并三唑化合物，其N-氧化物或至少两种前述化合物的混合物的组合物。 代表性的双 - 苯并三唑化合物包括3,3'-双 - （2H-苯并三唑-2-基）-5,5'-二叔辛基-1,1'-联苯-2,2'-二醇。 代表性的单苯并三唑化合物包括3-（2H-苯并三唑-2-基）-5,5'-二叔辛基-1,1'-联苯-2,2'-二醇。 这些单 - 和双 - 苯并三唑化合物可用作抗降解聚合物的抗紫外线作用的稳定剂。 还提供了通过相应的单体苯并三唑的氧化二聚或通过相应的偶氮化合物的还原环化制备这些苯并三唑化合物的方法。
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公开(公告)号：US4139720A
公开(公告)日：1979-02-13
申请号：US851997
申请日：1977-11-16
IPC分类号： C07C41/14 , C07C41/60 , C07C43/15 , C07C43/30 , C07C43/303 , C07C45/29 , C07C45/51 , C07C45/67 , C07C47/21
CPC分类号： C07C47/21 , C07C41/06 , C07C41/14 , C07C41/50 , C07C41/56 , C07C43/15 , C07C43/30 , C07C43/303 , C07C45/292 , C07C45/513 , C07C45/515 , C07C45/67
摘要： A multi-step process for the preparation of alpha,beta-unsaturated aliphatic aldehydes such as citral by first reacting an allylic alcohol with a butadienyl ether, or a corresponding acrolein derivative or its acetal, including novel intermediates in this process.
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公开(公告)号：US4629804A
公开(公告)日：1986-12-16
申请号：US707885
申请日：1985-03-04
IPC分类号： C07C269/00 , B01J31/24 , C07C20060101 , C07C67/00 , C07C239/00 , C07C269/04 , C07C271/06 , C07C271/08 , C07C271/16 , C07C271/26 , C07C271/28 , C07C125/065 , C07C125/073 , C07C125/077
CPC分类号： C07C271/06
摘要： This invention relates to a process for preparing urethanes by reacting a solution of a nitrogen-containing organic compound and a hydroxyl-containing organic compound with carbon monoxide in the presence of a ruthenium catalyst. The selectivity of this process is increased by the use of methanol instead of various other alkanols, e.g. ethanol. Preferably the catalyst is a halide-free ruthenium catalyst, e.g. a ruthenium carbonyl complex.
摘要翻译： 本发明涉及在钌催化剂存在下使含氮有机化合物和含羟基有机化合物的溶液与一氧化碳反应来制备聚氨酯的方法。 该方法的选择性通过使用甲醇代替各种其它链烷醇而增加。 乙醇。 优选地，催化剂是不含卤化物的钌催化剂，例如 羰基钌络合物。
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公开(公告)号：US4187241A
公开(公告)日：1980-02-05
申请号：US904688
申请日：1978-05-10
CPC分类号： C07F9/65515 , B01J31/2414 , C07F9/5027 , B01J2231/645 , B01J2531/10 , B01J2531/16 , B01J2531/17 , B01J2531/20 , B01J2531/26 , B01J2531/822
摘要： Novel Group IB and IIB metal phosphine complexes are disclosed. These complexes are reacted with rhodium complex precursors to form useful enantioselective hydrogenation catalysts. Also disclosed is a method of preparing useful compounds having optical activity such as natural products and compounds useful as flavors and fragrances.
摘要翻译： 公开了新的IB族和IIB族金属膦配合物。 这些络合物与铑配合物前体反应形成有用的对映选择性加氢催化剂。 还公开了制备具有光学活性的有用化合物的方法，例如天然产物和可用作香料和香料的化合物。
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公开(公告)号：US4073811A
公开(公告)日：1978-02-14
申请号：US755695
申请日：1976-12-30
IPC分类号： A23L27/20 , C07C45/29 , C07C45/51 , C07C45/67 , C07C47/21 , C11B9/00 , C07C43/30 , C07C41/06
CPC分类号： C11B9/0015 , A23L27/2024 , C07C45/292 , C07C45/513 , C07C45/67
摘要： A multi-step process for the preparation of alpha,beta-unsaturated aliphatic aldehydes such as citral by first reacting an allylic alcohol with a butadienyl ether, or a corresponding acrolein derivative or its acetal, including novel intermediates in this process.
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公开(公告)号：US4603216A
公开(公告)日：1986-07-29
申请号：US532785
申请日：1983-09-16
IPC分类号： C07C271/06 , C07C125/065 , C07C125/067 , C07C125/073 , C07C125/075
CPC分类号： C07C271/06
摘要： This invention relates to a process for preparing urethanes by reacting a solution of a nitrogen-containing organic compound and a hydroxyl-containing organic compound with carbon monoxide in the presence of a ruthenium catalyst comprising a bis phosphine ligand.
摘要翻译： 本发明涉及通过在含有双膦配体的钌催化剂存在下使含氮有机化合物和含羟基的有机化合物的溶液与一氧化碳反应来制备聚氨酯的方法。
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公开(公告)号：US4123465A
公开(公告)日：1978-10-31
申请号：US823373
申请日：1977-08-10
IPC分类号： C07C45/28 , C07C49/04 , C07C51/295 , C07C51/36 , C07C53/126 , C07C53/128 , C07C57/03 , C07F9/50
CPC分类号： C07F9/5031 , C07C45/62 , C07C51/295 , C07C51/36 , C07C53/126 , C07C53/128 , C07C57/03 , C07F9/5022 , C07F9/65515 , Y10S260/44
摘要： A method for the homogeneous catalytic enantioselective hydrogenation of alkyl and alkenyl substituted acrylic acids wherein these acids are selectively hydrogenated at the double bond alpha,beta to the acid function, said hydrogenations are catalyzed by rhodium complexes of chiral tertiary phosphines. This method provides a route to chiral dihydrogeranic acid and other intermediates useful in the synthesis of chiral vitamin E, citronellal, and menthol. Novel chiral tertiary phosphines are also disclosed.
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公开(公告)号：US4123464A
公开(公告)日：1978-10-31
申请号：US755693
申请日：1976-12-30
CPC分类号： C11B9/0015 , A23L27/2024 , C07C45/292 , C07C45/513 , C07C45/67
摘要： A multi-step process for the preparation of alpha,beta-unsaturated aliphatic aldehydes such as citral by first reacting an allylic alcohol with a butadienyl ether, or a corresponding acrolein derivative or its acetal, including novel intermediates in this process.
摘要翻译： 通过首先使烯丙醇与丁二烯基醚或相应的丙烯醛衍生物或其缩醛反应制备α，β-不饱和脂族醛如柠檬醛的多步法，包括该方法中的新型中间体。
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