Process for the preparation of 5-formylvalerate
    2.
    发明授权
    Process for the preparation of 5-formylvalerate 失效
    5-甲酰戊酸的制备方法

    公开(公告)号:US5527950A

    公开(公告)日:1996-06-18

    申请号:US365478

    申请日:1994-12-28

    CPC分类号: C07C67/347

    摘要: The invention relates to a process for the preparation of a 5-formylvalerate ester by hydroformylating a mixture of pentenoate esters in the presence of a catalyst system which catalyst system comprises a metal from group 8-10 of the Periodic Table of Elements and a mono- or multidentate organic phosphorous ligand, wherein the mixture of pentenoate esters contains less than 500 ppm hydroperoxide compounds.

    摘要翻译: 本发明涉及通过在催化剂体系的存在下加氢甲酰化戊烯酸酯的混合物来制备5-甲酰基戊酸酯的方法,催化剂体系包含元素周期表第8-10族的金属, 或多齿有机磷配体,其中戊烯酸酯的混合物含有少于500ppm的氢过氧化物。

    Process to prepare a multidentate phosphite compound
    4.
    发明授权
    Process to prepare a multidentate phosphite compound 失效
    制备多齿亚磷酸酯化合物的方法

    公开(公告)号:US5710306A

    公开(公告)日:1998-01-20

    申请号:US616747

    申请日:1996-03-15

    摘要: A process to prepare a multidentate phosphite compound according to the general formula (1) ##STR1## in which n is 2-6, R is an n-valent organic group and R.sup.1 and R.sup.2 are fused aromatic ring systems with 2 or more rings, which rings are substituted on the ortho position relative to the oxygen atom only with hydrogen, by first preparing a phosphorochloridite compound from a R.sup.1 --OH and R.sup.2 --OH alcohol compound and a phosphorus chloride compound and subsequently contacting the phosphorochloridite compound with an alcoholic compound according to R--(OH).sub.n, wherein the phosphorochloridite is prepared by performing the two steps in a solvent: a) contacting a compound with the general formula: ##STR2## in which R.sup.3 and R.sup.4 are C.sub.1 -C.sub.4 alkyl groups, with the R.sup.1 OH and R.sup.2 OH compounds, and b) contacting the resulting compound of step (a) which has the formula (3): ##STR3## with HY, wherein Y is a halogen.

    摘要翻译: 制备根据通式(1)的多齿亚磷酸酯化合物的方法,其中n是2-6,R是n价有机基团,R 1和R 2是具有2个或更多个环的稠合芳香环体系, 这些环仅在与氢气相对于氧原子的邻位上被取代,首先由R1-OH和R2-OH醇化合物和氯化磷化合物制备磷酰氯化合物,随后将其与醇化合物接触, 其中通过在溶剂中进行两个步骤来制备磷酰氯:a)使具有以下通式的化合物:其中R 3和R 4是C 1 -C 4烷基, 与R1OH和R2OH化合物反应,b)使所得到的具有式(3)的步骤(a)的化合物与式(3)与HY结合,其中Y是卤素。

    Process for the preparation of 5-formylvaleric acid and 5-formylvalerate
ester
    6.
    发明授权
    Process for the preparation of 5-formylvaleric acid and 5-formylvalerate ester 失效
    5-甲酰戊酸和5-甲酰戊酸酯的制备方法

    公开(公告)号:US5719312A

    公开(公告)日:1998-02-17

    申请号:US671929

    申请日:1996-06-27

    CPC分类号: C07C51/373 C07C67/347

    摘要: The invention relates to a process for the preparation of 5-formylvaleric acid or the corresponding 5-formylvalerate by hydroformylation of 3-pentenoic acid or 3-pentenoate ester with carbon monoxide and hydrogen in the presence of a catalyst comprising of rhodium and a phosphite ligand, wherein the phosphite ligand is represented by the following general formula ##STR1## where R.sup.1 and R.sup.2 are the same or different aromatic organic groups and where A is an n-valent group or atom and where n is an integer chosen upwards of 2 and where the respective �--O--P(OR.sup.1)(OR.sup.2)! group may be the same group or different groups and where the phosphite forms a chelate-type complex with rhodium.

    摘要翻译: 本发明涉及通过在包含铑和亚磷酸酯配体的催化剂存在下,用一氧化碳和氢气将3-戊烯酸或3-戊烯酸酯加氢甲酰化制备5-甲酰戊酸或相应的5-甲酰基戊酸酯的方法 其中亚磷酸酯配体由以下通式表示:其中R1和R2是相同或不同的芳族有机基团,其中A是n价基团或原子,其中n是选自2以上的整数,其中 相应的[-OP(OR1)(OR2)]基团可以是相同的基团或不同的基团,并且其中亚磷酸酯与铑形成螯合型络合物。