专利快速检索-快速检索全球专利，免费商用专利数据库-IPRDB

1. 发明授权

US5654486A Synthesis of cycloalkyldiarylphosphines 失效
标题翻译：环烷基二芳基膦的合成
公开(公告)号：US5654486A
公开(公告)日：1997-08-05
申请号：US620824
申请日：1996-03-25
申请人： K. Pushpananda A. Senaratne , Arcelio J. Malcolm , Felix M. Orihuela , Hassan Y. Elnagar
发明人： K. Pushpananda A. Senaratne , Arcelio J. Malcolm , Felix M. Orihuela , Hassan Y. Elnagar
IPC分类号： C07F9/50
CPC分类号： C07F9/5077
摘要： Partially sterically-hindered cycloalkyl chlorides are reacted with lithium diarylphosphides in inert liquid hydrocarbon reaction media to form cycloalkyldiarylphosphines. Aryl lithium is coproduced. The process makes it possible to avoid, or at least substantially eliminate, the interaction with or cleavage of cyclic ether reaction media such as tetrahydrofuran, previously the solvent of choice for conducting this type of reaction. Also during the conduct of the present process the chloro-substituted cycloalkane does not undergo any appreciable reaction with the coproduced aryl lithium as it is formed. Thus improvements both in yield and quality of the cycloalkyldiarylphosphine product are made possible. A comprehensive three-step process for converting triarylphosphine to cycloalkyldiarylphosphine is also described.
摘要翻译：部分空间位阻环烷基氯与惰性液体烃反应介质中的二芳基磷化锂反应形成环状二芳基膦。共生产芳基锂。该方法使得可以避免或至少基本上消除环醚反应介质如四氢呋喃的相互作用或切割，其中先前是用于进行这种反应的溶剂。此外，在本方法的进行过程中，氯取代的环烷烃在形成时不与共同生产的芳基锂发生任何明显的反应。因此，可以改善环烷基二芳基膦产物的产率和质量。还描述了将三芳基膦转化为环烷基二芳基膦的综合三步法。

2. 发明授权

US06020284A Preparation of Lucas reagent of enhanced utility and its use in synthesis of cycloaliphatic chlorides 失效
标题翻译： Lucas试剂的制备及其在环脂族氯化物合成中的应用
公开(公告)号：US06020284A
公开(公告)日：2000-02-01
申请号：US149992
申请日：1998-09-09
申请人： K. Pushpananda A. Senaratne , Felix M. Orihuela , Arcelio J. Malcolm
发明人： K. Pushpananda A. Senaratne , Felix M. Orihuela , Arcelio J. Malcolm
IPC分类号： C01G9/04 , C07C17/16 , B01J27/138
CPC分类号： C07C17/16 , C01G9/04 , Y02P20/582
摘要： Gaseous anhydrous hydrogen chloride is introduced into an aqueous solution of zinc chloride under conditions effective to produce a more efficient Lucas reagent than a Lucas reagent made by mixing solid, anhydrous zinc chloride with 38% hydrochloric acid. For example, the reaction rate of such Lucas reagent with levo-menthol is much faster and requires a much shorter reaction period than Lucas reagent formed in the conventional manner from anhydrous, solid zinc chloride and concentrated (38%) hydrochloric acid. Also, the conversion to levo-menthyl chloride was higher when using Lucas reagent formed using gaseous anhydrous hydrogen chloride and aqueous zinc chloride solution. Also, Lucas reagent made in this manner is highly amenable to recycling, and requires only addition thereto of hydrogen chloride to replenish the catalyst for an ensuing run.
摘要翻译：将气态无水氯化氢引入到氯化锌水溶液中，该条件有效地产生比通过将固体无水氯化锌与38％盐酸混合的Lucas试剂更有效的Lucas试剂。例如，这种Lucas试剂与左旋薄荷醇的反应速度要快得多，并且比用无水固体氯化锌和浓缩（38％）盐酸以常规方式形成的Lucas试剂要短得多的反应时间。此外，当使用使用气态无水氯化氢和氯化锌水溶液形成的Lucas试剂时，转化为氯化叶绿素较高。此外，以这种方式制备的Lucas试剂高度易于再循环，并且仅需要加入氯化氢来补充催化剂用于随后的运行。

3. 发明授权

US5654485A Synthesis of cycloalkyldiarylphosphines 失效
标题翻译：环烷基二芳基膦的合成
公开(公告)号：US5654485A
公开(公告)日：1997-08-05
申请号：US620823
申请日：1996-03-25
申请人： K. Pushpananda A. Senaratne , Arcelio J. Malcolm , Felix M. Orihuela , Hassan Y. Elnagar
发明人： K. Pushpananda A. Senaratne , Arcelio J. Malcolm , Felix M. Orihuela , Hassan Y. Elnagar
IPC分类号： C07F9/50
CPC分类号： C07F9/5077
摘要： By reacting certain partially sterically-hindered chloro-substituted cycloalkanes with sodium and/or potassium diarylphosphides in an ether reaction medium, not only are useful cycloalkyldiarylphosphines produced, but in addition the chloro-substituted cycloalkane does not undergo any appreciable reaction with the coproduced aryl sodium and/or aryl potassium as it is formed. Moreover, the process makes it possible to avoid or at least to greatly reduce interaction with or cleavage of cyclic ether reaction media such as tetrahydrofuran. Thus the process makes possible improvements both in yield and quality of the cycloalkyldiarylphosphite product. A two-stage process conducted in an ether reaction medium is also described. In the first stage the sodium and/or potassium diarylphosphine reactant is produced by reaction between sodium and/or potassium and triarylphosphine.
摘要翻译：通过使某些部分空间位阻的氯取代的环烷烃与醚反应介质中的二芳基磷酸钠和/或钾反应，不仅产生了有用的环烷基二芳基膦，而且氯取代的环烷烃与共同生产的芳基钠不会发生明显的反应和/或芳基钾。此外，该方法可以避免或至少大大降低与环醚反应介质如四氢呋喃的相互作用或裂解。因此，该方法可以改善环烷基二芳基亚磷酸酯产物的产率和质量。还描述了在醚反应介质中进行的两阶段方法。在第一阶段，二钠和/或二芳基膦反应物是通过钠和/或钾与三芳基膦之间的反应产生的。

4. 发明授权

US5391312A Lubricant additives 失效
标题翻译：润滑添加剂
公开(公告)号：US5391312A
公开(公告)日：1995-02-21
申请号：US100225
申请日：1993-08-02
申请人： K. Pushpananda A. Senaratne , Patrick S. Bynum , Mahmood Sabahi
发明人： K. Pushpananda A. Senaratne , Patrick S. Bynum , Mahmood Sabahi
IPC分类号： C07C69/34 , C10M129/72
CPC分类号： C10M129/72 , C07C69/34 , C10M2205/00 , C10M2207/28 , C10M2207/281 , C10M2207/282 , C10M2207/283 , C10M2207/286
摘要： Seals contacted with lubricants, such as poly-.alpha.-olefin lubricants, are made to swell rather than shrink by the use of novel seal-swell agents which are effective even when used in amounts constituting less than 5% of the weight of the lubricant compositions. These seal-swell agents are ester oils composed of molecules corresponding to the formula ROOC--CH.sub.2 CH.sub.2 --[(ROOC)CHCH.sub.2 ].sub.m --C(COOR).sub.2 --[CH.sub.2 CH(COOR)].sub.n --CH.sub.2 CH.sub.2 COOR in which the R's represent alkyl groups of 1-30 carbons, and each of m and n represents zero or a positive integer such that the sum of m and n in a molecule is 0-30.
摘要翻译：与润滑剂接触的密封剂如聚-α-烯烃润滑剂通过使用新颖的密封剂 - 溶胀剂而膨胀而不是收缩，即使使用的量小于润滑剂组合物的重量的5％。这些密封膨胀剂是由对应于式ROOC-CH 2 CH 2 - [（ROOC）CHCH 2] mC（COOR）2 - [CH 2 CH（COOR）] n -CH 2 CH 2 COOR的分子组成的酯油，其中R 1表示1- 30个碳，m和n各自表示0或正整数，使得分子内的m和n的和为0〜30。

5. 发明授权

US5196552A Preparation of cyclic ethers 失效
公开(公告)号：US5196552A
公开(公告)日：1993-03-23
申请号：US769644
申请日：1991-10-02
申请人： K. Pushpananda A. Senaratne , Patrick S. Bynum , Kenneth C. Lilje , Edward F. Zaweski
发明人： K. Pushpananda A. Senaratne , Patrick S. Bynum , Kenneth C. Lilje , Edward F. Zaweski
IPC分类号： C07D307/28 , C07D309/18 , C07D493/04
CPC分类号： C07D493/04 , C07D307/28 , C07D309/18
摘要： Cyclic ethers are prepared by reacting an unsaturated olefin oligomer derived from an alpha-olefin monomer containing from about 6 to 20 carbon atoms with an aldehyde in the presence of an acid catalyst.

6. 发明授权

US5322633A Preparation of branched chain carboxylic esters 失效
标题翻译：支链羧酸酯的制备
公开(公告)号：US5322633A
公开(公告)日：1994-06-21
申请号：US976817
申请日：1992-11-16
申请人： K. Pushpananda A. Senaratne , Kenneth C. Lilje
发明人： K. Pushpananda A. Senaratne , Kenneth C. Lilje
IPC分类号： C07C67/38 , C10M105/34 , C10M129/70
CPC分类号： C07C67/38 , C10M105/34 , C10M129/70 , C10M2207/281 , C10M2207/282 , C10M2207/283 , C10M2207/286 , C10N2240/00 , C10N2240/02 , C10N2240/06 , C10N2240/105 , C10N2240/14 , C10N2240/22 , C10N2240/30 , C10N2240/40 , C10N2240/50 , C10N2240/52 , C10N2240/54 , C10N2240/56 , C10N2240/58 , C10N2240/60 , C10N2240/66
摘要： Branched chain carboxylic esters are prepared by reacting an unsaturated PAO such as 1-decene dimer with CO and an aliphatic alcohol solvent in the presence of an acid and a noble metal catalyst complex such as RuCl.sub.3 /Ph.sub.3 P or PdCl.sub.3 /Ph.sub.3 P.
摘要翻译：在酸和贵金属催化剂配合物如RuCl 3 / Ph 3 P或PdCl 3 / Ph 3 P存在下，使不饱和PAO如1-癸烯二聚体与CO和脂族醇溶剂反应制备支链羧酸酯。

7. 发明授权

US5225588A Process for alkylating salicylates with polyalphaolefin 失效
标题翻译：用聚α烯烃烷基化水杨酸酯的方法
公开(公告)号：US5225588A
公开(公告)日：1993-07-06
申请号：US829712
申请日：1992-02-03
申请人： K. Pushpananda A. Senaratne , Patrick S. Bynum
发明人： K. Pushpananda A. Senaratne , Patrick S. Bynum
IPC分类号： C07C67/343
CPC分类号： C07C67/343
摘要： Hydroxybenzoates such as methylsalicylate are alkylated by reacting a hydroxybenzoate with a polyalphaolefin in the presence of a catalytic amount of SnCl.sub.4.
摘要翻译：羟基苯甲酸酯如水杨酸甲酯在催化量的SnCl 4存在下使羟基苯甲酸酯与聚α-烯烃反应进行烷基化。

8. 发明授权

US4914233A Synthesis of beta-thymidine 失效
标题翻译： β-胸苷的合成
公开(公告)号：US4914233A
公开(公告)日：1990-04-03
申请号：US162508
申请日：1988-03-01
申请人： John N. Freskos , K. Pushpananda A. Senaratne
发明人： John N. Freskos , K. Pushpananda A. Senaratne
IPC分类号： C07H19/06
CPC分类号： C07H19/06
摘要： A process is provided in which a mixture of alpha- and beta-anomers is converted selectively to the desired beta-thymidine. The process involves the following steps: (a) converting a mixture of alpha- and beta-anomers of tetra-O-acylribofuranose to tri-O-acyl-.beta.-ribothymidine; (b) converting tri-O-acyl-.beta.-ribothymidine to .beta.-ribothymidine; (c) converting .beta.-ribothymidine to 2,2'-anhydro-.beta.-thymidine; (d) converting 2,2'-anhydro-.beta.-thymidine to 2'-halo-2'-deoxy-5-methyluridine; and (e) converting 2'-halo-2'-deoxy-5-methyluridine to beta-thymidine. The mixture of alpha- and beta-anomers of tetra-O-acylribofuranose may be produced by any suitable procedure such as by converting lower alkyl ribofuranoside to the tetra-O-acylribofuranose mixture. The lower alkyl ribofuranosides may in turn be produced by various methods. However, a desirable way of effecting this conversion involves use of D-ribose as the starting material which is converted to the lower alkyl ribofuranoside.
摘要翻译：提供了一种方法，其中将α-和β-端基异构体的混合物选择性转化成所需的β-胸苷。该方法包括以下步骤：（a）将四-O-酰基呋喃核糖的α-和β-端基异构体的混合物转化为三-O-酰基-β-核糖胸苷; （b）将三-O-酰基-β-核糖胸苷转化为β-二硫胸苷; （c）将β-二硫胸苷转化为2,2'-脱水-β-胸苷; （d）将2,2'-脱水-β-胸苷转化为2'-卤代-2'-脱氧-5-甲基尿苷; 和（e）将2'-卤代-2'-脱氧-5-甲基尿苷转化为β-胸苷。四-O-酰基呋喃核糖的α-和β-端基异构体的混合物可以通过任何合适的方法制备，例如通过将低级烷基呋喃核糖苷转化成四-O-酰基呋喃核糖混合物。可以通过各种方法制备低级烷基呋喃核糖。然而，实现该转化的期望方式涉及使用D-核糖作为转化为低级烷基核糖呋喃糖苷的起始原料。

9. 发明授权

US4814497A Dehalogenation process 失效
标题翻译：脱卤过程
公开(公告)号：US4814497A
公开(公告)日：1989-03-21
申请号：US861934
申请日：1986-05-12
申请人： K. Pushpananda A. Senaratne
发明人： K. Pushpananda A. Senaratne
IPC分类号： C07B35/06 , C07B31/00 , C07B63/02 , C07C51/00 , C07C51/377 , C07C51/487 , C07C63/70 , C07C65/21 , C07C65/24 , C07C67/00 , C07C67/317 , C07C69/76 , C07C233/81 , C07C235/66 , C07C253/00 , C07C255/52 , C07C255/53 , C07C255/54 , C07C325/00 , C07C327/48 , C07C63/34
CPC分类号： C07C51/377
摘要： Particulate aluminum is intimately mixed with an aromatic material that contains at least one ar-halo substituent having an atomic number above 20 and at least one side-chain halo substituent having an atomic number below 20 in the presence of an aqueous alkali or alkaline earth metal hydroxide so as to effect selective removal of the ar-halo substituent.
摘要翻译：颗粒铝与含有至少一个原子数大于20的卤素取代基和至少一个原子序数低于20的侧链卤代基取代基在碱金属或碱土金属水溶液的芳族材料上充分混合氢氧化物，以便实现选择性除去芳卤基取代基。

10. 发明授权

US5994587A Process for purifying neomenthyldiphenylphosphine using methanol 失效
标题翻译：使用甲醇净化新戊基二苯基膦的方法
公开(公告)号：US5994587A
公开(公告)日：1999-11-30
申请号：US84623
申请日：1998-05-26
申请人： Tse-Chong Wu , K. Pushpananda A. Senaratne
发明人： Tse-Chong Wu , K. Pushpananda A. Senaratne
IPC分类号： C07F9/50
CPC分类号： C07F9/5095
摘要： A process for the purification of crude neomenthyldiphenylphosphine, the process comprising crystallizing the crude neomenthyldiphenylphosphine using a solvent consisting essentially of methanol. The process provides for the unexpectedly efficient production of neomenthyldiphenylphosphine having purities of at least 97 mole percent, and more preferably at least about 99 mole percent. Another embodiment of the invention is neomenthyldiphenylphosphine having a purity of at least 97 mole percent produced by crystallizing crude neomenthyldiphenylphosphine having a purity of less than 97 mole percent using a solvent consisting essentially of methanol.
摘要翻译：一种用于纯化新戊基二苯基膦的方法，该方法包括使用基本上由甲醇组成的溶剂使粗新戊基二苯基膦结晶。该方法提供意想不到的高效生产纯度至少为97摩尔％，更优选至少约99摩尔％的新戊基二苯基膦。本发明的另一个实施方案是通过使用基本上由甲醇组成的溶剂，使纯度小于97摩尔％的粗新戊基二苯基膦结晶，得到纯度为至少97摩尔％的新戊基二苯基膦。

你已经成功收藏专利！

检索式保存成功!

IPRDB

热门服务

关于我们

友情链接

联系方式