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公开(公告)号：US4731453A
公开(公告)日：1988-03-15
申请号：US846564
申请日：1986-03-31
IPC分类号： C07D233/32
CPC分类号： C07D233/32
摘要： An improved process of producing 1, 3-dialkyl-2-imidazolidinones directly from N, N'-dialkylethylenediamine and urea with a high yield is provided, which process comprises reacting a N, N'-dialkylethylenediamine of the formula ##STR1## wherein R represents --CH.sub.3, --C.sub.2 H.sub.5, --C.sub.3 H.sub.7 or --C.sub.4 H.sub.9, with urea at 180.degree. C. or higher in the presence of a polar solvent, to obtain a 1, 3-dialkyl-2-imidazolidinone of the formula ##STR2## and preferably comprises carrying out the reaction at two stages, that is, the initial period reaction being carried out at 140.degree. C. or lower to from a 1, 1'-dialkyl-1 1'-dimethylenebisurea and successively the latter reaction being carried out at 180.degree. C. or higher.
摘要翻译： 提供了一种直接由N，N'-二烷基乙二胺和尿素以高产率制备1,3-二烷基-2-咪唑啉酮的改进方法，该方法包括使式IMA的N，N'-二烷基乙二胺与R 表示-CH 3，-C 2 H 5，-C 3 H 7或-C 4 H 9，尿素在180℃以上，在极性溶剂的存在下，得到式“IMAGE”的1,3-二烷基-2-咪唑啉酮，优选 包括在两个阶段进行反应，即初始时间反应在140℃或更低温度下进行，从1,1'-二烷基-1,1'-二亚甲基二氢呋喃进行，并且后续反应在 180℃以上。
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2.发明授权
公开(公告)号：US4952731A
公开(公告)日：1990-08-28
申请号：US232011
申请日：1988-08-15
IPC分类号： C07C209/18 , C07C85/06
CPC分类号： C07C209/18
摘要： Diphenylamines or N,N'-diphenyl-phenylenediamines can be obtained by heat-reacting an aniline or a phenylenediamine with preferably an excess of a phenol in an amount of 4 to 20 moles per mole of the aniline or phenylenediamine in th presence of a hydrogen transfer catalyst and a cyclohexanone corresponding to said phenol.The excess phenol used in the reaction undergoes reduction in the reaction system to form a cyclohexanone, which in turn reacts with the aniline or phenylenediamine to form a Schiff base and is thus consumed. The Schiff base forms the intended product by means of a dehydrogenation reaction, and the hydrogen evolved at this time reduces the phenol to form a cyclohexanone.The phenol present in excess thus becomes in the system a solvent, a starting material for the cyclohexanone, and an acceptor of the hydrogen that forms as a by-product at the time of formation of the intended product. Hence, it becomes possible to obtain the intended product at a high selectivity from the anilines and phenylenediamines.The process of this invention is an advantageous process for the industrial production of especially the nuclearly substituted diphenylamines.
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3.发明授权
公开(公告)号：US4871875A
公开(公告)日：1989-10-03
申请号：US246014
申请日：1988-09-14
IPC分类号： C07C209/18
CPC分类号： C07C209/18
摘要： Diphenylamines or N,N'-diphenyl-phenylenediamines can be obtained by heat-reacting an aniline or a phenylenediamine with preferably an excess of a phenol in an amount of 4 to 20 moles per mole of the aniline or phenylenediamine in the presence of a hydrogen transfer catalyst and a cyclohexanone corresponding to said phenol.The excess phenol used in the reaction undergoes reduction in the reaction system to form a cyclohexanone, which in turn reacts with the aniline or phenylenediamine to form a Schiff base and is thus consumed. The Schiff base forms the intended product by means of a dehydrogenation reaction, and the hydrogen evolved at this time reduces the phenol to form a cyclohexanone.The phenol present in excess thus becomes in the system a solvent, a starting material for the cyclohexanone, and an acceptor of the hydrogen that forms as a by-product at the time of formation of the intended product. Hence, it becomes possible to obtain the intended product at a high selectivity from the anilines and phenylenediamines.The process of this invention is an advantageous process for the industrial production of especially the nuclearly substituted diphenylamines.
摘要翻译： 二苯胺或N，N'-二苯基 - 苯二胺可以通过使苯胺或苯二胺与优选过量的苯酚反应来获得，苯酚的量为4至20摩尔/摩尔苯胺或苯二胺在氢气存在下 转移催化剂和对应于所述苯酚的环己酮。 在反应中使用的过量苯酚经历还原反应体系以形成环己酮，该环己酮又与苯胺或苯二胺反应形成希夫碱，因此被消耗。 希夫碱通过脱氢反应形成预期的产物，此时放出的氢还原酚形成环己酮。 因此，过量存在的苯酚在体系中形成溶剂，环己酮的起始原料和在形成所需产物时形成副产物的氢的受体。 因此，可以从苯胺和苯二胺以高选择性获得目标产物。 本发明的方法是工业生产特别是核取代的二苯胺的有利方法。
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4.发明授权
公开(公告)号：US4804783A
公开(公告)日：1989-02-14
申请号：US80440
申请日：1987-07-31
IPC分类号： C07C209/18 , C07C85/06
CPC分类号： C07C209/18
摘要： Diphenylamines or N,N'-diphenyl-phenylenediamines can be obtained by heat-reacting an aniline or a phenylenediamine with preferably an excess of a phenol in an amount of 4 to 20 moles per mole of the aniline or phenylenediamine in the presence of a hydrogen transfer catalyst and a cyclohexanone corresponding to said phenol.The excess phenol used in the reaction undergoes reduction in the reaction system to form a cyclohexanone, which in turn reacts with the aniline or phenylenediamine to form a Schiff base and is thus consumed. The Schiff base forms the intended product by means of a dehydrogenation reaction, and the hydrogen evolved at this time reduces the phenol to form a cyclohexanone.The phenol present in excess thus becomes in the system a solvent, a starting material for the cyclohexanone, and an acceptor of the hydrogen that forms as a by-product at the time of formation of the intended product. Hence, it becomes possible to obtain the intended product at a high selectivity from the anilines and phenylenediamines.The process of this invention is an advantageous process for the industrial production of especially the nuclearly substituted diphenylamines.
摘要翻译： 二苯胺或N，N'-二苯基 - 苯二胺可以通过使苯胺或苯二胺与优选过量的苯酚反应来获得，苯酚的量为4至20摩尔/摩尔苯胺或苯二胺在氢气存在下 转移催化剂和对应于所述苯酚的环己酮。 在反应中使用的过量苯酚经历还原反应体系以形成环己酮，该环己酮又与苯胺或苯二胺反应形成希夫碱，因此被消耗。 希夫碱通过脱氢反应形成预期的产物，此时放出的氢还原酚形成环己酮。 因此，过量存在的苯酚在体系中形成溶剂，环己酮的起始原料和在形成所需产物时形成副产物的氢的受体。 因此，可以从苯胺和苯二胺以高选择性获得目标产物。 本发明的方法是工业生产特别是核取代的二苯胺的有利方法。
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公开(公告)号：US4780522A
公开(公告)日：1988-10-25
申请号：US21706
申请日：1987-03-04
CPC分类号： C08G18/3863 , G02B1/043
摘要： A sulfur-containing polyurethane base lens resin is obtained by reacting one or more isocyanate compounds, which have two or more NCO groups, with one or more OH-containing compounds, which have two or more OH groups, in such proportions that the molar ratio of NCO groups to OH groups ranges from 0.5 to 1.5. At least one of said one or more OH-containing compounds contains one or more sulfur atoms in the molecule thereof. The total content of sulfur atoms in all OH-containing compounds is 20 wt. % or higher.
摘要翻译： 含硫聚氨酯基础透镜树脂通过使一种或多种具有两个或更多个NCO基团的异氰酸酯化合物与一种或多种具有两个或更多个OH基团的含OH化合物以使摩尔比 的NCO基团与OH基团的比例为0.5至1.5。 所述一种或多种含OH化合物中的至少一种在其分子中含有一个或多个硫原子。 所有含OH化合物中硫原子的总含量为20wt。 ％ 或更高。
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公开(公告)号：US4680369A
公开(公告)日：1987-07-14
申请号：US843222
申请日：1986-03-24
CPC分类号： C08G18/3863 , G02B1/043
摘要： A sulfur-containing polyurethane base lens resin is obtained by reacting one or more isocyanate compounds, which have two or more NCO groups, with one or more OH-containing compounds, which have two or more OH groups, in such proportions that the molar ratio of NCO groups to OH groups ranges from 0.5 to 1.5. At least one of said one or more OH-containing compounds contains one or more sulfur atoms in the molecule thereof. The total content of sulfur atoms in all OH-containing compounds is 20 wt. % or higher.
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公开(公告)号：US4689387A
公开(公告)日：1987-08-25
申请号：US843189
申请日：1986-03-24
CPC分类号： C08G18/773 , C08G18/3876 , C08G18/73 , C08G18/7642 , G02B1/041
摘要： An S-alkyl thiocarbamate base lens resin is obtained by reacting one or more NCO-containing compounds, such as xylylene diisocyanate, hexamethylene diisocyanate and/or tetrachloroxylylene diisocyanate, with one or more SH-containing aliphatic compounds, for example, a di(2-mercaptoalkyl) ether.
摘要翻译： 通过使一种或多种含NCO的化合物如亚二甲苯基二异氰酸酯，六亚甲基二异氰酸酯和/或四氯亚氧苯基二异氰酸酯与一种或多种含SH的脂族化合物反应，得到一种S-烷基硫代氨基甲酸酯基础透镜树脂，例如二（2 - 巯基烷基）醚。
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公开(公告)号：US4900820A
公开(公告)日：1990-02-13
申请号：US53387
申请日：1987-05-22
申请人： Nobuyuki Kajimoto , Teruyuki Nagata , Masaru Wada
发明人： Nobuyuki Kajimoto , Teruyuki Nagata , Masaru Wada
IPC分类号： C07D239/36 , C07D233/32 , C07D239/10 , C07D243/04 , C07D233/34
CPC分类号： C07D239/10 , C07D233/32 , C07D243/04
摘要： A process for producing a cyclic diamine which comprises reacting a diamine of the formulaR--HN--R'--NH--R (II)wherein R represents a lower alkyl group and R' represents a lower alkyl group-substituted dimethylene group, trimethylene group, a lower alkyl group-substituted trimethylene group, tetramethylene group or a lower alkyl group-substituted tetramethylene group with urea in the presence of a polar solvent and at 180.degree. C. or higher, to obtain a cyclic urea ##STR1## wherein R and R' are each as defined above, the production yield being more improved by carrying out the initial period reaction at 140.degree. C. or lower.
摘要翻译： 一种制备环二胺的方法，该方法包括使式R-HN-R'-NH-R（II）的二胺与其中R代表低级烷基和R'代表低级烷基取代的二亚甲基，三亚甲基 ，低级烷基取代的三亚甲基，四亚甲基或低级烷基取代的四亚甲基与脲在极性溶剂存在下并在180℃或更高温度下反应，得到环状脲（I） 其中R和R'各自如上所定义，通过在140℃或更低温度下进行初始周期反应，可以更好地提高产率。
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公开(公告)号：US4625062A
公开(公告)日：1986-11-25
申请号：US675225
申请日：1984-11-27
申请人： Teruyuki Nagata , Akihiro Tamaki , Hiroki Ohnishi , Hideki Mizuta
发明人： Teruyuki Nagata , Akihiro Tamaki , Hiroki Ohnishi , Hideki Mizuta
IPC分类号： C07B61/00 , B01J23/00 , B01J23/38 , C07C20060101 , C07C67/00 , C07C209/36 , C07C211/46 , C07C213/00 , C07C217/84 , C07C85/11
CPC分类号： C07C213/00
摘要： 4-Alkoxyanilines are obtained industrially advantageously by catalytically hydrogenating a nitrobenzene in the presence of a noble metal catalyst in a mixed solvent containing a lower aliphatic alcohol, sulfuric acid, and water or a lower aliphatic carboxylic acid or both to induce hydrogenation and a Bamberger-type rearrangement reaction. The mixed solvent contains at least 10 moles, preferably 30 to 60 moles, of the lower aliphatic alcohol per mole of the nitrobenzene, 1 to 10 moles, preferably 2 to 7 moles, of sulfuric acid per mole of the nitrobenzene, and 2 to 30% by weight, preferably 3 to 10% by weight, of water, the lower aliphatic carboxylic acid or both.
摘要翻译： 4-烷氧基苯胺在工业上有利地通过在贵金属催化剂存在下在含有低级脂族醇，硫酸和水或低级脂族羧酸或二者的混合溶剂中催化氢化硝基苯以诱导氢化和Bamberger- 类型重排反应。 混合溶剂每摩尔硝基苯含有至少10摩尔，优选30至60摩尔的低级脂族醇，1摩尔，优选2至7摩尔硫酸/摩尔硝基苯，2至30 重量％，优选3至10重量％的水，低级脂族羧酸或两者。
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公开(公告)号：US4668793A
公开(公告)日：1987-05-26
申请号：US794034
申请日：1985-11-01
IPC分类号： C07D233/32 , C07D233/34
CPC分类号： C07D233/32
摘要： A process for producing 1,3-dimethyl-2-imidazolidinone with a high yield which comprises reacting N,N'-dimethylethylene diamine and/or its hydrochloride with phosgene in the presence of a substantial amount of water and a dehydrochlorinating agent. Particularly, higher yield is attained by carrying out the reaction in water medium while controlling a pH to the range of 3.0 to 10.0 by adding a dehydrochlorinating agent.
摘要翻译： 一种以高产率生产1,3-二甲基-2-咪唑烷酮的方法，其包括在大量水和脱氯化氢剂的存在下使N，N'-二甲基乙二胺和/或其盐酸盐与光气反应。 特别地，通过在水介质中进行反应，同时通过加入脱氯化氢剂将pH控制在3.0至10.0的范围内来实现更高的产率。
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