METHOD OF QUENCHING ELECTRONIC EXCITATION OF CHROMOPHORE-CONTAINING ORGANIC MOLECULES IN PHOTOACTIVE COMPOSITIONS
    3.
    发明申请
    METHOD OF QUENCHING ELECTRONIC EXCITATION OF CHROMOPHORE-CONTAINING ORGANIC MOLECULES IN PHOTOACTIVE COMPOSITIONS 失效
    光电组合物中包含有机分子的电子激发的方法

    公开(公告)号:US20090041847A1

    公开(公告)日:2009-02-12

    申请号:US12022758

    申请日:2008-01-30

    CPC classification number: A61K8/40 A61K2800/52 A61Q17/04

    Abstract: The photostabilizing electronic excited state energy—particularly singlet state energy from a UV-absorbing molecule has been found to be readily transferred to (accepted by) α-cyanodiphenylacrylate compounds of formulas (I) and (V) having an alkoxy radical preferably in the four (para) position (hereinafter methoxycrylenes) on one or both of the phenyl rings: wherein at least one of R1 and R2 is a straight or branched chain C1-C12 alkoxy radical, preferably C1-C8, more preferably C1-C4, and most preferably methoxy, and any non-alkoxy radical R1 or R2 is hydrogen; and R3 is a straight or branched chain C1-C24 alkyl radical, preferably C12-C24, more preferably C20; wherein A and B are the same or different and are selected from the group consisting of oxygen, amino and sulfur; R1 and R3 are the same or different and are selected from the group consisting of C1-C30 alkyl, C2-C30 alkylene, C2-C30 alkyne, C3-C8 cycloalkyl, C1-C30 substituted alkylene, C2-C30 substituted alkyne, aryl, substituted aryl, heteroaryl, heterocycloalkyl, substituted heteroaryl and substituted heterocycloalkyl; R2 is selected from the group consisting of C1-C30 alkyl, C2-C30 alkylene, C2-C30 alkyne, C3-C8 cycloalkyl, C1-C30 substituted alkyl, C3-C8 substituted cycloalkyl, C1-C30 substituted alkylene, C2-C30 substituted alkyne; R4, R5, R6 and R7 are the same or different and are selected from the group consisting of C1-C30 alkoxy straight chain on branched and a, b, c and d are each either 0 or 1, and a, b, c and d add up to 1, 2, 3, or 4.

    Abstract translation: 已经发现光稳定化电子激发态能量 - 特别是来自紫外线吸收分子的单态能量已经被发现容易地转移到具有烷氧基的式(I)和(V)的α-氰基二苯基丙烯酸酯化合物(接受) (对位)位置(以下为甲氧基);其中R 1和R 2中的至少一个为直链或支链C 1 -C 12烷氧基,优选C 1 -C 8,更优选C 1 -C 4,最优选 优选甲氧基,任何非烷氧基R 1或R 2为氢; 并且R 3是直链或支链C 1 -C 24烷基,优选C 12 -C 24,更优选C 20; 其中A和B相同或不同,并且选自氧,氨基和硫; R 1和R 3相同或不同,选自C 1 -C 30烷基,C 2 -C 30亚烷基,C 2 -C 30炔基,C 3 -C 8环烷基,C 1 -C 30取代的亚烷基,C 2 -C 30取代的炔基,芳基, 取代的芳基,杂芳基,杂环烷基,取代的杂芳基和取代的杂环烷基; R 2选自C 1 -C 30烷基,C 2 -C 30亚烷基,C 2 -C 30炔基,C 3 -C 8环烷基,C 1 -C 30取代的烷基,C 3 -C 8取代的环烷基,C 1 -C 30取代的亚烷基,C 2 -C 30取代的 炔烃 R4,R5,R6和R7相同或不同,选自支链上的C1-C30烷氧基直链,a,b,c和d各自为0或1,a,b,c和 d加起来1,2,3或4。

    Catalyst composition and method for selective dehydrogenation
    9.
    发明授权
    Catalyst composition and method for selective dehydrogenation 失效
    催化剂组合物和选择性脱氢方法

    公开(公告)号:US4798911A

    公开(公告)日:1989-01-17

    申请号:US75375

    申请日:1987-07-20

    Abstract: A method for selective dehydrogenation of a compound, comprising contacting a compound of the formula ##STR1## wherein each R.sup.1, R.sup.2, R.sup.3 and R.sup.4 is independently selected from the group consisting of H, (C.sub.1 -C.sub.20) alkyl, (C.sub.3 -C.sub.20) cycloalkyl, (C.sub.6 -C.sub.20) aryl, (C.sub.7 -C.sub.20) alkylaryl, (C.sub.7 -C.sub.20) aralkyl groups, as well as substituted (C.sub.1 -C.sub.20) alkyl, (C.sub.3 -C.sub.20) cycloalkyl, (C.sub.6 -C.sub.20) aryl, (C.sub.7 -C.sub.20) aralkyl and (C.sub.7 -C.sub.20) arylalkyl moieties, optionally further substituted with --OR, wherein R is R.sup.1, R.sup.2, R.sup.3 or R.sup.4 ; and wherein R.sup.1 and R.sup.2 or R.sup.3 and R.sup.4 may be joined as part of a ring structure, at a dehydrogenation temperature in the presence of a catalyst comprising about 0.01 wt %-19.9 wt % Pd and about 0.01 wt %-19.9 wt % Cu on a carbon support, wherein the total amount of (Pd+Cu) on the support is about 0.02 wt % to 20 wt %, the weight ratio of Pd:Cu is about 1:1 to 10:1, and the carbon support has a surface area of at least about 100 m.sup.2 /g and is essentially free of reactive sulfur.A selective dehydrogenation catalyst having the composition described supra is disclosed as is a method of preparing the same. This catalyst is highly selective for dehydrogenating a variety of substrates while minimizing the formation of unwanted hydrogenolysis by-products.

    Abstract translation: 一种化合物的选择性脱氢的方法,包括使下式化合物与其中每个R 1,R 2,R 3和R 4独立地选自H,(C 1 -C 20)烷基,(C 3 -C 20) 环烷基,(C 6 -C 20)芳基,(C 7 -C 20)烷基芳基,(C 7 -C 20)芳烷基以及取代的(C 1 -C 20)烷基,(C 3 -C 20)环烷基,(C 6 -C 20) C7-C20)芳烷基和(C7-C20)芳烷基部分,任选进一步被-OR取代,其中R是R 1,R 2,R 3或R 4; 并且其中R 1和R 2或R 3和R 4可以作为环结构的一部分在脱氢温度下在催化剂存在下接合,所述催化剂包含约0.01重量%-19.9重量%的Pd和约0.01重量%-19.9重量%的Cu 碳载体,其中载体上的(Pd + Cu)的总量为约0.02重量%至20重量%,Pd:Cu的重量比为约1:1至10:1,并且碳载体具有 表面积至少约100m 2 / g,基本上不含活性硫。 作为其制备方法,公开了具有上述组成的选择性脱氢催化剂。 该催化剂对于使各种底物脱氢而具有高选择性,同时最小化不想要的氢解副产物的形成。

    Alkanoic acid derivatives
    10.
    发明授权
    Alkanoic acid derivatives 失效
    烷酸衍生物

    公开(公告)号:US4362891A

    公开(公告)日:1982-12-07

    申请号:US160426

    申请日:1980-06-17

    Abstract: An alkanoic acid compound is disclosed of formula: ##STR1## and certain of its physiologically acceptable salts and esters. The alkanoic acid compound and its salts and esters have an unexpectedly greater anti-inflammatory activity than representative members of a broad class of compounds, phenyl alkane derivatives, known to have therapeutic properties. The alkanoic acid compound also has unexpectedly high antipyretic and analgesic activity. The compounds may be formulated in conventional manner as pharmaceutical compositions.The compound may be prepared from 2-[4-(1-hydroxy-2-dimethylethyl)phenyl] propionic acid directly by dehydration or via an ester by dehydration in the presence of an alkanol followed by hydrolysis.

    Abstract translation: 公开了一种链烷酸化合物,其分子式如下:< IMAGE>和其某些生理上可接受的盐和酯。 链烷酸化合物及其盐和酯具有比已知具有治疗性质的广泛类别化合物苯基烷衍生物的代表性成员具有出乎意料的更大的抗炎活性。 链烷酸化合物也具有意想不到的高解热和止痛活性。 化合物可以以常规方式配制成药物组合物。 该化合物可以直接通过脱水或通过在烷醇存在下脱水然后通过酯水解从2- [4-(1-羟基-2-二甲基乙基)苯基]丙酸制备。

Patent Agency Ranking