Process for preparing 3-sulfobenzoic acid and alkali metal salts thereof
    42.
    发明授权
    Process for preparing 3-sulfobenzoic acid and alkali metal salts thereof 失效
    制备3-磺基苯甲酸及其碱金属盐的方法

    公开(公告)号:US5387711A

    公开(公告)日:1995-02-07

    申请号:US103186

    申请日:1993-08-06

    申请人: Michael Meier

    发明人: Michael Meier

    CPC分类号: C07C303/22 C07C303/32

    摘要: Process for preparing 3-sulfobenzoic acid and alkali metal salts thereof is disclosed. The present invention relates to a process for preparing 3-sulfobenzoic acid and/or alkali metal salts thereof, which comprises mixing 3-(chlorosulfonyl)benzoic acid with water and a water-immiscible solvent in which 3-sulfobenzoic acid is insoluble or only sparingly soluble, removing water from the mixture by azeotropic distillation, cooling and, if desired, admixing the 3-sulfobenzoic acid formed with alkali metal hydroxide and/or a substance forming alkali metal hydroxide and again removing water by azeotropic distillation.

    摘要翻译: 公开了制备3-磺基苯甲酸及其碱金属盐的方法。 本发明涉及一种制备3-磺基苯甲酸和/或其碱金属盐的方法,其包括将3-(氯磺酰基)苯甲酸与水和不溶于水的溶剂混合,其中3-磺基苯甲酸是不溶的或仅仅是微量的 通过共沸蒸馏,冷却和如果需要,与形成碱金属氢氧化物形成的3-磺基苯甲酸和/或形成碱金属氢氧化物的物质混合,再次通过共沸蒸馏除去水,从混合物中除去水分。

    Process for the preparation of 3'-aminopropyl 2-sulfatoethyl sulfone
    43.
    发明授权
    Process for the preparation of 3'-aminopropyl 2-sulfatoethyl sulfone 失效
    制备3'-氨基丙基2-磺酰基乙基砜的方法

    公开(公告)号:US5281740A

    公开(公告)日:1994-01-25

    申请号:US923955

    申请日:1992-09-04

    CPC分类号: C07C317/28

    摘要: In a method for preparing 3'aminopropyl-2-sulphatoethylsulphone in a one-pot process, allyl amine is reacted with mercaptoethanol in dilute sulphuric acid at temperatures of approximately 50.degree. C. up to the boiling point in the presence of a radical starter. The resultant reaction mixture is oxidized with hydrogen peroxide, in the presence of catalytic quantities of a compound of a transition metal of the periodic system of the elements as an oxidation catalyst, at temperatures of approximately 70 to 100.degree.C. and evaporated to dryness after addition of sufficient sulphuric acid to bring the total sulphuric acid content of the mixture to at least 1 mol, referred to the quantity of allyl amine used.

    摘要翻译: PCT No.PCT / EP91 / 00359 Sec。 371日期:1992年9月4日 102(e)日期1992年9月4日PCT 1991年2月27日提交PCT公布。 公开号WO91 / 13866 日本1991年9月19日。在一锅法中制备3'-氨基丙基-2-磺基乙基砜的方法中,烯丙基胺与巯基乙醇在稀硫酸中在约50℃至约沸点 存在激进的启动器。 在约70至100℃的温度下,在催化量的作为氧化催化剂的元素的周期系统的过渡金属的化合物的存在下,用过氧化氢氧化所得的反应混合物。 并加入足够的硫酸后蒸发至干,使混合物的总硫酸含量至少为1摩尔,即所用烯丙胺的量。

    N-acylaminoalkyl 2-hydroxyethyl sulfides and a process for their
preparation
    44.
    发明授权
    N-acylaminoalkyl 2-hydroxyethyl sulfides and a process for their preparation 失效
    N-酰基氨基烷基2-羟乙基硫化物及其制备方法

    公开(公告)号:US5278341A

    公开(公告)日:1994-01-11

    申请号:US923956

    申请日:1992-09-04

    CPC分类号: C07C323/31 C07C323/41

    摘要: The invention relates to N-acyl-aminoalkyl-2-hydroxyethylsulfides of formula R--CONH--(CH.sub.2).sub.n --S--CH.sub.2 --CH.sub.2 --OH, where R is a hydrogen atom or a (C.sub.1 -C.sub.4) alkyl group and n is an integer between 3 and 6, and to a method for preparing them. The method consists in reacting compounds of formula R--CONH--(CH.sub.2).sub.m --CH.dbd.CH.sub.2, where R has the above-mentioned meaning and m is an integer between 1 and 4, with the equivalent quantity of mercaptoethanol at approximately 15.degree. to approximately 150.degree. C. in the presence of a radical starter and in the presence or in the absence of a solvent which is inert to the reactants and to radical reactions.

    摘要翻译: PCT No.PCT / EP91 / 00360 Sec。 371日期:1992年9月4日 102(e)日期1992年9月4日PCT 1991年2月27日提交PCT公布。 公开号WO91 / 13867 1991年9月19日,本发明涉及式R-CONH-(CH2)nS-CH2-CH2-OH的N-酰基 - 氨基烷基-2-羟乙基硫醚,其中R是氢原子或(C1-C4) 烷基,n为3〜6的整数,以及其制备方法。 该方法包括使式R-CONH-(CH 2)m -CH = CH 2的化合物反应,其中R具有上述含义,m为1至4之间的整数,巯基乙醇的当量为约15度至 约150℃,在自由基引发剂的存在下,并且在存在或不存在对反应物是惰性的溶剂和自由基反应的情况下。