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    Continuous prodn. of monochloroacetic acid - from chlorine gas and liq. acetic acid by cocurrent flow
    13.
    发明专利
    Continuous prodn. of monochloroacetic acid - from chlorine gas and liq. acetic acid by cocurrent flow 未知

    公开(公告)号：DE2300058A1

    公开(公告)日：1974-07-11

    申请号：DE2300058

    申请日：1973-01-02

    Applicant: BASF AG

    Inventor： HERTEL OTTO DR ,  SCHLECHT HELMUT DR

    IPC: C07C51/363 ,  C07C53/16

    Abstract: In the prodn. of ClCH2COOH (I) by reaction of liq. CH3COOH with gaseous Cl2 in the presence of a halogenation catalyst, the CH3COOH is passed through the reaction zone at a rate of 0.1-20 kg/hr/l in cocurrent with 0.5-1.5 times this amt. of Cl2, the residence time of the gas phase being 1-60 sec. and the residence time of the liq. phase being 1-100 times this value. The phases thus flow through the reaction zone without significant mixing and the reaction takes place at the phase interface. Products contg. 1 wt. % Cl2CHCOOH are obtained. (I) is used as a preservative, a solvent and a starting material for the prodn. of dyes, pesticides, plasticisers and synthetic resins.

    Amino-substd. alkyl nitriles prodn. - from amines, carbonyl cpds. and hydrogen cyanide, useful e.g. as pharmaceutical and agrochemical intermediates
    18.
    发明专利
    Amino-substd. alkyl nitriles prodn. - from amines, carbonyl cpds. and hydrogen cyanide, useful e.g. as pharmaceutical and agrochemical intermediates 未知

    公开(公告)号：DE2621728A1

    公开(公告)日：1977-11-24

    申请号：DE2621728

    申请日：1976-05-15

    Applicant: BASF AG

    Inventor： DISTLER HARRY DR ,  TOLKSDORF ERICH DR ,  HARTERT ERWIN DR ,  SCHLECHT HELMUT DR

    IPC: C07C255/24 ,  C07D295/145 ,  C07D295/15 ,  C07C121/43 ,  C07C120/00

    Abstract: Prepn. of glycine nitriles of formula R3R4N.CR5R6.CN (I) comprises reacting amnes R3R4NH (III) with carbonyl cpds R5COR6 (IV) and HCN in presence of water for 0.1-4 hrs. at 0-80 degrees C. The condn. of HCN never exceeds 0.9 wt. % of the reaction mixt. In the formulae, R3-6 are aromatic, cycloaliphatic or araliphatic gps.; R3 and R4 may together complete a heterocycle; R4-6 may also be H, and R5 and R6 may also be aliphatic, and when R5 and/or R6 is aliphatic aromatic, cycloaliphatic or araliphatic, then R3 and R4 can also be aliphatic. Pref. the products where R3-6 are aromatic gps., R5 and R6 may also be H, aliphatic, cycloaliphatic or araliphatic, and R4 may be H, are subsequently treated with an acid at pH 1-7. (I) are stabilisers; intermediates for dyes (e.g. indigo) fungicides, bactericides, textile auxiliaries and antigelling agents; and by saponification give glycine salts useful as selective adsorbents for CO2, SO2 and H2S, and by hydrogenation give assymetric diamines useful for making pharmaceuticals and plant protection agents. Cf. the process of DT 1543342. This method is simpler and more economic giving better yields of purer products. Water pollution and formation of resinous by-products are minimised, and subsequent acid treatment obviates expensive purification steps and avoids losses of solvent.

    Amino-substd. alkyl nitriles prodn. - from amines, carbonyl cpds. and hydrogen cyanide, useful e.g. as pharmaceutical and agrochemical intermediates
    19.
    发明专利
    Amino-substd. alkyl nitriles prodn. - from amines, carbonyl cpds. and hydrogen cyanide, useful e.g. as pharmaceutical and agrochemical intermediates 未知

    公开(公告)号：DE2621450A1

    公开(公告)日：1977-11-24

    申请号：DE2621450

    申请日：1976-05-14

    Applicant: BASF AG

    Inventor： DISTLER HARRY DR ,  TOLKSDORF ERICH DR ,  HARTERT ERWIN DR ,  SCHLECHT HELMUT DR

    IPC: C07C255/24 ,  C07D295/145 ,  C07D295/15 ,  C07C121/43 ,  C07C120/00

    Abstract: Prepn. of glycine nitriles of formula R3R4N.CR5R6.CN (I) comprises reacting amnes R3R4NH (III) with carbonyl cpds R5COR6 (IV) and HCN in presence of water for 0.1-4 hrs. at 0-80 degrees C. The condn. of HCN never exceeds 0.9 wt. % of the reaction mixt. In the formulae, R3-6 are aromatic, cycloaliphatic or araliphatic gps.; R3 and R4 may together complete a heterocycle; R4-6 may also be H, and R5 and R6 may also be aliphatic, and when R5 and/or R6 is aliphatic aromatic, cycloaliphatic or araliphatic, then R3 and R4 can also be aliphatic. Pref. the products where R3-6 are aromatic gps., R5 and R6 may also be H, aliphatic, cycloaliphatic or araliphatic, and R4 may be H, are subsequently treated with an acid at pH 1-7. (I) are stabilisers; intermediates for dyes (e.g. indigo) fungicides, bactericides, textile auxiliaries and antigelling agents; and by saponification give glycine salts useful as selective adsorbents for CO2, SO2 and H2S, and by hydrogenation give assymetric diamines useful for making pharmaceuticals and plant protection agents. Cf. the process of DT 1543342. This method is simpler and more economic giving better yields of purer products. Water pollution and formation of resinous by-products are minimised, and subsequent acid treatment obviates expensive purification steps and avoids losses of solvent.

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