Process for the preparation of polyhalogenphenyl carbamates
    3.
    发明授权
    Process for the preparation of polyhalogenphenyl carbamates 失效
    制备多卤代苯基氨基甲酸酯的方法

    公开(公告)号:US4347377A

    公开(公告)日:1982-08-31

    申请号:US188966

    申请日:1980-09-19

    CPC分类号: C07C271/06

    摘要: The invention concerns a new process for the preparation of polyhalogenphenyl carbamates of the formula (I)R.sup.2 -OCONHR.sup.1 (I)whereinR.sup.1 is alkyl, aralkyl or aryl, where the aromatic rings may optionally be substituted; andR.sup.2 is phenyl substituted with three, four or five halogens, through intermediates of the formula (IV)(R.sup.2 --O).sub.2 C.dbd.NR.sup.1 (IV)wherein R.sup.1 and R.sup.2 are as defined above.The compounds of the formula (I) are valuable acylating agents. The intermediates of the formula (IV) are new compounds, which are also encompassed by the invention.

    摘要翻译: 本发明涉及一种制备式(I)的多卤代苯基氨基甲酸酯的新方法,其中R 1为烷基,芳烷基或芳基,其中芳环可任选被取代; R2为通过式(IV)中间体(R2-O)2C = NR1(Ⅳ)取代的苯基,其中R1和R2如上定义。 式(I)的化合物是有价值的酰化剂。 式(IV)的中间体是新化合物,其也包括在本发明中。

    Highly efficient tobacco smoke filter
    4.
    发明授权
    Highly efficient tobacco smoke filter 失效
    高效烟草烟雾过滤器

    公开(公告)号:US5060672A

    公开(公告)日:1991-10-29

    申请号:US447094

    申请日:1989-12-06

    IPC分类号: A24D3/14 A24D3/16

    CPC分类号: A24D3/16 A24D3/14

    摘要: The invention relates to a novel, highly efficient tobacco smoke filter provided with mechanically (fibrous) and/or adsorptively filtering materials as well as chemosorptively filtering components, which comprises a synergistic composition containing at least one of a compound having a high nucleophilic additivity, capable of chemically reacting and stable adduct forming with excited and ground-level aldehydes not filtered out by the mechanically and/or adsorptively filtering materials; and at least one of a compound containing ##STR1## enediol structural moieties, wherein the enediol type compound or its combination suitably amount to at least 50% by weight of the other chemosorptive components and 40 to 300% by weight of the adsorptively filtering materials.

    摘要翻译: 本发明涉及一种具有机械(纤维)和/或吸附性过滤材料以及化学吸收过滤组分的新型高效烟草烟雾过滤器,其包含含有至少一种具有高亲核加成性的化合物的协同组合物,其能够 与机械和/或吸附过滤材料未过滤的激发和磨碎级醛形成化学反应和稳定的加合物; 和含有烯雌酚结构部分的化合物中的至少一种,其中烯内酯型化合物或其组合适当地为至少50重量%的其它化学吸收组分和40-300重量%的吸附过滤材料。

    Process for the preparation of benzo(a)quinolizidine derivatives
    5.
    发明授权
    Process for the preparation of benzo(a)quinolizidine derivatives 失效
    苯并(a)喹嗪衍生物的制备方法

    公开(公告)号:US4102886A

    公开(公告)日:1978-07-25

    申请号:US624470

    申请日:1975-10-21

    CPC分类号: C07D491/14 C07D455/06

    摘要: A process for the preparation of a compound of the formula I or a salt thereof ##STR1## wherein R.sup.1 and R.sup.2 each represent hydrogen or a C.sub.1-4 alkoxy group, or together form a methylenedioxy group;R.sup.3, r.sup.4, r.sup.5 and R.sup.6 are the same or different and are hydrogen or a group of the formula --CH.sub.2 --(CH.sub.2).sub.n --R.sup.7 with the proviso that at least one of the members R.sup.3, R.sup.4, R.sup.5 and R.sup.6 is other than hydrogen; R.sup.7 is carboxyl or a carboxylic acid derivative group;N = 0.1 or 2 which comprises reacting a compound of the formula II ##STR2## with an organic secondary amine and reacting the N-amine of the formula III ##STR3## thus obtained wherein R.sup.8 and R.sup.9 each represent a C.sub.1-5 alkyl group, or together with the adjacent nitrogen atom form a 5- or 6-membered heterocyclic ring which can contain a further heteroatom, with a compound of the formula IVch.sub.2 .dbd. ch -- (ch.sub.2).sub.n -- R.sup.10 (IV)wherein R.sup.10 is a cyano or alkoxycarbonyl group.

    摘要翻译: 一种制备式I化合物或其盐的方法,其中R 1和R 2各自代表氢或C 1-4烷氧基,或一起形成亚甲二氧基; R 3,R 4,R 5和R 6相同或不同,为氢或式-CH 2 - (CH 2)n -R 7的基团,条件是至少有一个R 3,R 4,R 5和R 6不是 氢; R7是羧基或羧酸衍生物基团; N = 0.1或2,其包含用有机仲胺反应式II化合物,并使由此得到的式III的N-胺反应,其中R 8和R 9各自表示C 1-5烷基, 或者与相邻的氮原子一起形成可以含有另外的杂原子的5或6元杂环与式IV的化合物CH2 = CH-(CH2)n-R10(IV),其中R10是氰基或 烷氧基羰基。

    Process for the preparation of optically active cyclopropane carboxylic
acids
    6.
    发明授权
    Process for the preparation of optically active cyclopropane carboxylic acids 失效
    光学活性环丙烷羧酸的制备方法

    公开(公告)号:US4508919A

    公开(公告)日:1985-04-02

    申请号:US555187

    申请日:1983-11-25

    CPC分类号: C07C51/487

    摘要: The invention relates to a process for the preparation of enantiomers of trans vinyl-cyclopropane carboxylic acids of the formula I, ##STR1## wherein R is a methyl group or chlorine atom, by resolution of racemic trans compound or mixture of racemic cis and trans compounds by using (+)- or (-)-N-(1-formamido-2,2,2-trichloroethyl)-piperazine as a resolving agent in a polar solvent then separating the crystallizing salt of (+)-trans carboxylic acid and (-)-resolving agent or (-)-trans carboxylic acid and (+)-resolving agent from the mother liquor by filtration and obtaining the enantiomers by acidifying the mother liquor or the salts suspended in water followed by extraction with a solvent and evaporation.The products so obtained may be used as starting materials for the preparation of insecticides.

    摘要翻译: 本发明涉及通过拆分外消旋反式化合物或外消旋的顺式和反式化合物的混合物制备式I的反式乙烯基 - 环丙烷羧酸的对映异构体的方法,其中R是甲基或氯原子 通过在极性溶剂中使用(+) - 或( - ) - N-(1-甲酰胺基-2,2,2-三氯乙基) - 哌嗪作为拆分剂,然后将(+) - 反式羧酸的结晶盐和 ( - ) - 拆分剂或( - ) - 反式羧酸和(+) - 拆分剂通过过滤从母液中获得对映异构体,通过酸化母液或悬浮在水中的盐,然后用溶剂萃取并蒸发 。 所得产物可用作制备杀虫剂的起始原料。

    Process for the chemical sensitization of silver halide photographic
emulsions
    10.
    发明授权
    Process for the chemical sensitization of silver halide photographic emulsions 失效
    银盐摄影乳液的化学敏化过程

    公开(公告)号:US5169751A

    公开(公告)日:1992-12-08

    申请号:US641144

    申请日:1991-01-15

    IPC分类号: G03C1/09 G03C1/10

    摘要: The invention relates to a novel process for the chemical sensitization of silver halide photographic emulsions.The process according to the invention comprises adding as additional sensitizing agents a 40-260 .mu. moles/mole of a cyclic polyether containing 1 nitrogen and 5 oxygen atoms, or 2 nitrogen and 4 oxygen atoms, or 3 nitrogen and 3 oxygen atoms, or 4 nitrogen and 2 oxygen atoms as well as 12 carbon atoms and/or their complexes formed with gold and/or palladium and optionally 40-260 .mu. moles/mole of silver halide) of gold (I) or gold (III) sulfide to the sulfur-sensitized emulsion, and employing the cyclic polyether in relation to the noble metal salt in a molar ratio of 0.5:1-5:1 for the complex formation.

    摘要翻译: 本发明涉及一种用于卤化银照相乳剂的化学增感的新方法。 根据本发明的方法包括加入40-260微摩尔/摩尔含有1个氮原子和5个氧原子,2个氮原子和4个氧原子或3个氮原子和3个氧原子的环状聚醚的额外的敏化剂,或4个 氮和2个氧原子以及12个碳原子和/或其与金和/或钯形成的络合物和/或任选的40-260μmol/ mol卤化银)金(I)或金(III) 对于复合物形成,使用与贵金属盐相对于摩尔比为0.5:1-5:1的环状聚醚。