公开(公告)号：US5241118A

公开(公告)日：1993-08-31

申请号：US796499

申请日：1991-11-22

申请人： Robert J. Saxton ,  Wilfred P. Shum ,  Edward T. Shawl ,  Haven S. Kesling, Jr. ,  John G. Zajacek

发明人： Robert J. Saxton ,  Wilfred P. Shum ,  Edward T. Shawl ,  Haven S. Kesling, Jr. ,  John G. Zajacek

IPC分类号： B01J23/40 ,  B01J23/74 ,  B01J27/045 ,  B01J27/128 ,  C07B61/00 ,  C07C261/02 ,  C07C273/00 ,  C07C273/18 ,  C07C275/28 ,  C07D295/215

CPC分类号： C07D295/215 ,  C07C273/1809

摘要： A process for preparing trisubstituted ureas is disclosed. A nitroarene is reacted with carbon monoxide and a secondary amine in the presence of a Group VIII transition metal catalyst and optionally one or more promoters selected from primary amines, halide ion-containing compounds, and chelating phosphorus and nitrogen compounds.

公开(公告)号：US4996359A

公开(公告)日：1991-02-26

申请号：US167922

申请日：1988-03-14

申请人： Haven S. Kesling, Jr. ,  Edward T. Shawl ,  John G. Zajacek

发明人： Haven S. Kesling, Jr. ,  Edward T. Shawl ,  John G. Zajacek

IPC分类号： C07C273/02 ,  C07C273/18 ,  C07C275/30 ,  C07C275/40

CPC分类号： C07C275/40 ,  C07C273/1827

摘要： Aromatic bis (dialkyl) ureas such as the bis (dimethyl) urea of 2,4-toluenediamine are prepared by reacting an aromatic diamine with isocyanic acid (HNCO) to convert the amino groups of the diamine to urea groups (--NHCONH.sub.2) to give an aromatic bis urea which is then reacted with a dialkyl amine having from 1 to 8 carbon atoms to produce the desired aromatic bis (dialkyl) urea.

公开(公告)号：US5166371A

公开(公告)日：1992-11-24

申请号：US743001

申请日：1991-08-09

申请人： Wilfred P. Shum ,  Haven S. Kesling, Jr. ,  John G. Zajacek

发明人： Wilfred P. Shum ,  Haven S. Kesling, Jr. ,  John G. Zajacek

IPC分类号： C07D301/19 ,  C07D303/14 ,  C07D303/22 ,  C07F7/08

CPC分类号： C07D301/19 ,  C07D303/14 ,  C07D303/22 ,  C07F7/0801 ,  C07F7/083

摘要： Prochiral ethylenically unsaturated substrates are converted to chiral epoxides by reaction with optically active hydroperoxides in the presence of transition metal catalysts. For example, chiral glycidol is obtained by asymmetric epoxidation of allyl alcohol using optically active ethyl benzene hydroperoxide and a titaniuym alkoxide/tartrate catalyst. The chiral epoxide products are versatile synthetic intermediates.

摘要翻译： 通过在过渡金属催化剂的存在下与光学活性氢过氧化物反应，将前手性烯属不饱和基材转化为手性环氧化物。 例如，手性缩水甘油通过使用光学活性乙基苯氢过氧化物和钛酸胺醇盐/酒石酸盐催化剂的烯丙醇的不对称环氧化获得。 手性环氧化物产品是通用的合成中间体。

公开(公告)号：US5166372A

公开(公告)日：1992-11-24

申请号：US832568

申请日：1992-02-07

申请人： Guy L. Crocco ,  Wilfred F. Shum ,  John G. Zajacek ,  Haven S. Kesling, Jr.

发明人： Guy L. Crocco ,  Wilfred F. Shum ,  John G. Zajacek ,  Haven S. Kesling, Jr.

IPC分类号： B01J27/20 ,  C07D301/12 ,  C07D303/04

CPC分类号： C07D301/12 ,  Y02P20/125

摘要： Olefins are epoxidized by hydrogen peroxide in the presence of an organorhenium oxide catalyst and an alkyl aryl secondary alcohol solvent. High yields of epoxides with minimal non-selective loss of either hydrogen peroxide or olefin are realized. The epoxidation may comprise one step of an integrated process wherein an oxidant mixture is generated by molecular oxygen oxidation of the alkyl aryl secondary alcohol and used directly in the epoxidation without further purification or extraction.

公开(公告)号：US5126476A

公开(公告)日：1992-06-30

申请号：US646535

申请日：1991-01-25

申请人： Mahmoud K. Faraj ,  Haven S. Kesling, Jr. ,  John G. Zajacek

发明人： Mahmoud K. Faraj ,  Haven S. Kesling, Jr. ,  John G. Zajacek

IPC分类号： C07C263/04 ,  C07C269/06 ,  C07C271/16

CPC分类号： C07C269/06 ,  C07C263/04 ,  C07C271/16 ,  C07C2101/14 ,  C07C2102/10

摘要： A process for making aryl-, heteroaryl-, or cycloalkyl-substituted alkyl urethanes is disclosed. The urethanes are prepared by electrophilic carbamylation of aromatic compounds with alkylene bis(carbamic acid esters) or the equivalent in the presence of an acidic catalyst and a polar aprotic solvent. The alkyl urethanes may be cracked to give the corresponding substituted alkyl isocyanates.

摘要翻译： 公开了制备芳基，杂芳基或环烷基取代的烷基氨基甲酸酯的方法。 通过在酸性催化剂和极性非质子溶剂的存在下，芳族化合物与亚烷基二（氨基甲酸酯）或等价物的亲电氨基甲酰化来制备聚氨酯。 烷基氨基甲酸酯可能被裂化，得到相应的取代的烷基异氰酸酯。

公开(公告)号：US6127584A

公开(公告)日：2000-10-03

申请号：US291737

申请日：1999-04-14

申请人： John G. Zajacek ,  Wilfred P. Shum

发明人： John G. Zajacek ,  Wilfred P. Shum

IPC分类号： B01J31/24 ,  C07B61/00 ,  C07C29/16 ,  C07C31/20 ,  C07C31/18

CPC分类号： C07C29/16 ,  C12C11/02

摘要： Allyl alcohol is hydroformated to 1,4-butanediol using a rhodium and trialkyl phosphine catalyst having at least 2 methyl groups, the reaction first being carried out at milder conditions and subsequently at more, severe conditions.

摘要翻译： 使用具有至少2个甲基的铑和三烷基膦催化剂将烯丙醇加氢形成1,4-丁二醇，该反应首先在更温和的条件下进行，随后在更苛刻的条件下进行。

公开(公告)号：US4146727A

公开(公告)日：1979-03-27

申请号：US905705

申请日：1978-05-15

申请人： Edward T. Shawl ,  John G. Zajacek

发明人： Edward T. Shawl ,  John G. Zajacek

IPC分类号： C07C269/00 ,  C07C269/06 ,  C07C125/04

摘要： Diphenylmethane mono and dicarbamates and polymethylene polyphenyl carbamate homologs and derivatives of these compounds are produced by the protonic or Lewis acid catalyzed rearrangement of an (alkoxycarbonyl)phenylaminomethylphenyl compound having the general formula ##STR1## INCLUDING THE HIGHER HOMOLOGS OF SUCH COMPOUNDS, WHEREIN X, Y AND Z, WHICH ARE DIFFERENT ON THE RING, ARE AN ALKYL GROUP HAVING FROM 1 TO 3 CARBON ATOMS, AN --NHCOOR, --CH.sub.2 ArNHCOOR or --N(COOR)CH.sub.2 Ar group; x, y and z may also be at least one hydrogen; R is a 1 to 3 carbon alkyl group and Ar is phenyl which may be substituted with a 1 to 3 carbon atom alkyl group.

公开(公告)号：US4130633A

公开(公告)日：1978-12-19

申请号：US864172

申请日：1977-12-27

申请人： Edward T. Shawl ,  Ming N. Sheng ,  John G. Zajacek

发明人： Edward T. Shawl ,  Ming N. Sheng ,  John G. Zajacek

IPC分类号： B01J27/30 ,  C01B19/00

CPC分类号： C01B19/004 ,  B01J27/30 ,  C01B19/001 ,  Y02P20/584

摘要： A method for the removal and recovery of selenium from a urethane solution containing selenium compounds, which may be in the form of inorganic selenium and/or organoselenium compounds, which comprises contacting the selenium-containing urethane solution at a suitable temperature with an aqueous hydrogen peroxide solution and recovering the selenium from the resulting selenium compound enriched aqueous phase in a form suitable for reuse in the preparation of urethanes, the deselenized urethane remaining in the hydrocarbon and/or organic phase.

摘要翻译： 一种从含有硒化合物的氨基甲酸酯溶液中去除和回收硒的方法，其可以是无机硒和/或有机硒化合物的形式，其包括在合适的温度下将含硒氨基甲酸酯溶液与过氧化氢水溶液 溶液，并从所生成的硒化合物富集的水相中以适于在制备氨基甲酸酯中再利用的形式回收硒，该脱盐氨基甲酸酯保留在烃和/或有机相中。

公开(公告)号：US5618512A

公开(公告)日：1997-04-08

申请号：US565711

申请日：1995-11-30

申请人： Robert J. Saxton ,  John G. Zajacek

发明人： Robert J. Saxton ,  John G. Zajacek

IPC分类号： B01J29/04 ,  C01B37/00 ,  C01B39/08 ,  C07D301/12 ,  C01B39/40

CPC分类号： B01J29/04 ,  C01B37/005 ,  C01B39/08 ,  C07D301/12 ,  Y10S423/22

摘要： Molecular sieve zeolites containing niobium isomorphously substituted in their framework lattice are obtained by hydrothermal crystallization using quaternary ammonium templates. The zeolites are useful catalysts, particularly for the oxidation of hydrocarbons such as olefins.

摘要翻译： 通过使用季铵模板的水热结晶获得含有在其框架晶格中同晶取代的铌的分子筛沸石。 沸石是有用的催化剂，特别是用于烃类如烯烃的氧化。

公开(公告)号：US5527520A

公开(公告)日：1996-06-18

申请号：US420187

申请日：1995-04-11

申请人： Robert J. Saxton ,  John G. Zajacek ,  Guy L. Crocco ,  Kanthi S. Wijesekera

发明人： Robert J. Saxton ,  John G. Zajacek ,  Guy L. Crocco ,  Kanthi S. Wijesekera

IPC分类号： B01J29/89 ,  C01B37/00 ,  C07B61/00 ,  C07D211/26 ,  C07D301/12 ,  C07D301/19 ,  C07D303/04 ,  C07D303/14

CPC分类号： C07D301/19 ,  B01J29/89 ,  C01B37/005 ,  C07D211/26 ,  C07D301/12 ,  C07D303/04 ,  Y10S423/27

摘要： A crystalline molecular sieve having a framework structure isomorphous with zeolite beta and containing Si and Ti, but essentially no framework Al, usefully catalyzes olefin epoxidation wherein hydrogen peroxide or an organic hydroperoxide is utilized as the oxidizing agent.

摘要翻译： 具有与沸石β同晶并且含有Si和Ti，但基本上不含骨架A1的骨架结构的结晶分子筛有效地催化烯键式环氧化，其中使用过氧化氢或有机氢过氧化物作为氧化剂。