Preparation of 3-buten-1-ol from 3,4-epoxy-1-butene
    91.
    发明授权
    Preparation of 3-buten-1-ol from 3,4-epoxy-1-butene 失效
    从3,4-环氧-1-丁烯制备3-丁烯-1-醇

    公开(公告)号:US6103943A

    公开(公告)日:2000-08-15

    申请号:US9345

    申请日:1998-01-20

    CPC分类号: C07C29/106

    摘要: Disclosed is a process for the synthesis of 3-buten-1-ol by contacting 3,4-epoxy-1-butene and formic acid with a homogeneous catalyst solution comprising a palladium(0) compound, a tertiary phosphine and a trialkylamine dissolved in tetrahydrofuran.

    摘要翻译: 公开了通过使3,4-环氧-1-丁烯和甲酸与均匀的催化剂溶液接触来合成3-丁烯-1-醇的方法,所述均相催化剂溶液包含钯(0)化合物,叔膦和三烷基胺溶于 四氢呋喃。

    Process for the preparation of 2-alkene-1,4-diols and 3-alkene-1,2-diols
from .gamma.,.delta.-epoxyalkenes
    92.
    发明授权
    Process for the preparation of 2-alkene-1,4-diols and 3-alkene-1,2-diols from .gamma.,.delta.-epoxyalkenes 失效
    从γ,δ-环氧乙烷制备2-烯-1,4-二醇和3-烯-1,2-二醇的方法

    公开(公告)号:US5959162A

    公开(公告)日:1999-09-28

    申请号:US890004

    申请日:1997-07-08

    CPC分类号: C07C29/86 C07C29/106

    摘要: This invention pertains, firstly, to the use of mixtures of hydriodic acid and organic solvent soluble iodide salts as catalysts for the hydration of .gamma.,.delta.-epoxyalkenes to form a mixture of the corresponding 2-alkene-1,4-diol and 3-alkene-1,2-diol isomers. Secondly, this invention describes the use of pH to control the 2-alkene-1,4-diol/3-alkene-1,2-diol product ratio, and achieve improved 2-alkene-1,4-diol selectivities by controlling the pH to near neutral values. Thirdly, this invention includes a catalyst recovery process whereby a liquid/liquid extraction is used to separate the product from the catalyst. In this extraction, .gamma.,.delta.-epoxyalkene, or a .gamma.,.delta.-epoxyalkene-containing organic solvent, is used to extract the catalysts from water, leaving the diol products in the aqueous phase, from which they may be subsequently recovered by distillation, extraction or by other means.

    摘要翻译: 本发明首先涉及使用氢碘酸和有机溶剂可溶性碘盐的混合物作为γ,δ-环氧乙烷水合的催化剂,以形成相应的2-烯-1,4-二醇和3- 烯-1,2-二醇异构体。 其次,本发明描述了使用pH控制2-烯-1,4-二醇/ 3-烯-1,2-二醇的产物比例,并通过控制二烯烃-1,4-二醇选择性来实现改进的2-烯-1,4-二醇选择性 pH值接近中性值。 第三,本发明包括催化剂回收方法,其中液/液萃取用于将产物与催化剂分离。 在该提取中,使用γ,δ-环氧亚烷基或含有γ-环氧亚烷基烯烃的有机溶剂,从水中提取催化剂,将二醇产物置于水相中,随后可通过蒸馏回收它们, 提取或通过其他方式。

    Process for the preparation of alkylene glycols
    93.
    发明授权
    Process for the preparation of alkylene glycols 失效
    亚烷基二醇的制备方法

    公开(公告)号:US5874653A

    公开(公告)日:1999-02-23

    申请号:US756102

    申请日:1996-11-25

    CPC分类号: C07C29/106 Y02P20/52

    摘要: A process is disclosed for preparing an alkylene glycol by reacting an alkylene oxide with water in the presence of a catalyst comprising a polymeric organosiloxane ammonium salt having a silica-like skeleton and comprising units of the general formula (I) ##STR1## wherein R.sup.1 to R.sup.4, Y and x are as specified in claim 1. Preferred are the catalysts wherein the anion Y is selected from the group of carboxylates having from 1-20 carbon atoms, hydrogen carbonate, hydrogen sulphite, hydrogen phosphate and metalate. These catalysts exhibit an enhanced selectivity stability.

    摘要翻译: 公开了一种通过在包含具有二氧化硅样骨架的聚合物有机硅氧烷铵盐的催化剂存在下使烯化氧与水反应来制备亚烷基二醇的方法,该聚合有机硅氧烷铵盐包含通式(I)的单元。 其中R1至R4,Y和x如权利要求1所述。优选的催化剂是阴离子Y选自具有1-20个碳原子的羧酸盐,碳酸氢盐,亚硫酸氢盐,磷酸氢盐和金属盐。 这些催化剂表现出增强的选择性稳定性。

    Process for preparing adipic acid
    95.
    发明授权
    Process for preparing adipic acid 失效
    己二酸的制备方法

    公开(公告)号:US5455375A

    公开(公告)日:1995-10-03

    申请号:US190195

    申请日:1994-07-25

    摘要: A process for preparing adipic acid from cyclohexene oxide comprising the following steps (a) and (b):(a) hydrating cyclohexene oxide to obtain 1,2-dihydroxycyclohexane and an oligomers represented by formula (I): ##STR1## wherein n represents a number of from 1 to 5 in number average, and (b) oxidizing the 1,2-dihydroxycyclohexane and the oligomers represented by formula (I) in a nitric acid aqueous solution.

    摘要翻译: PCT No.PCT / JP93 / 00457 Sec。 371日期:1994年7月25日 102(e)日期1994年7月25日PCT提交1993年4月9日PCT公布。 出版物WO94 / 24083 1,一种由环己烯氧化物制备己二酸的方法,包括以下步骤(a)和(b):(a)使环己烯氧化物水合,得到1,2-二羟基环己烷和由式(I)表示的低聚物, (I)其中n表示数均为1〜5的数,(b)在硝酸水溶液中氧化1,2-二羟基环己烷和由式(I)表示的低聚物。

    Continuous process for the production of alkylene glycol in the presence
of organometalate
    98.
    发明授权
    Continuous process for the production of alkylene glycol in the presence of organometalate 失效
    在有机金属盐存在下生产亚烷基二醇的连续方法

    公开(公告)号:US4571440A

    公开(公告)日:1986-02-18

    申请号:US663827

    申请日:1984-10-23

    CPC分类号: C07C29/106

    摘要: A continuous process for making alkylene glycols by the hydrolysis of alkylene oxides in the presence of selectivity-enhancing organometalate wherein the alkylene glycol-containing hydrolysis product contains organometalate comprises recovering organometalate by extraction with a water-immiscible solvent, separating the resulting organometalate-containing solvent into an organometalate-lean stream for reuse in the extraction and an organometalate-rich stream for reuse in the hydrolysis.

    摘要翻译: 在含有亚烷基二醇的水解产物含有有机金属酸盐的选择性增强的有机金属盐存在下,通过环氧烷烃水解制备亚烷基二醇的连续方法包括通过与水不混溶的溶剂萃取来回收有机金属盐酸盐,分离得到的含有机金属盐的溶剂 转化为有机金属酸盐流,用于在提取中重新使用,以及富含有机金属酸盐的料流以在水解中再利用。