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    • 4. 发明授权
    • Joint preparation of 3-dialkylaminopropionitriles, bis-(2-cyanoethyl)
ether and, if desired, ethylene-cyanohydrin
    • 联合制备3-二烷基氨基丙腈,双(2-氰基乙基)醚和(如果需要)乙烯 - 氰醇
    • US4965362A
    • 1990-10-23
    • US376373
    • 1989-07-06
    • Franz MergerWolfgang HarderPeter HettingerClaus-Ulrich PriesterDieter FranzDieter Voges
    • Franz MergerWolfgang HarderPeter HettingerClaus-Ulrich PriesterDieter FranzDieter Voges
    • C07C253/18C07C255/12C07C255/13C07C255/24
    • C07C255/12C07C255/13C07C255/24
    • 3-Dialkylaminopropionitriles ##STR1## where R.sup.1 and R.sup.2 are each C.sub.1 -C.sub.4 -alkyl which may furthermore be bonded to form a 5-membered or 6-membered ring, bis-(2-cyanoethyl) ether IINC--CH.sub.2 --CH.sub.2 --O--CH.sub.2 --CH.sub.2 --CN IIand, if desired, ethylenecyanohydrin IIIHO--CH.sub.2 --CH.sub.2 --CN IIIare prepared jointly by a process in which(a) acrylonitrile and water are reacted in the presence of a base at from 60.degree. to 150.degree. C. to give a mixture of acrylonitrile, water and bis-(2-cyanoethyl) ether II, the base being a mineral base, a quaternary nitrogen base or a mixture of these,(b) this mixture is reacted at about 0.degree.-50.degree. C. with a dialkylamine of the general formula IV ##STR2## to give a mixture of water, a dialkylaminopropionitrile I and bis-(2-cyanoethyl) ether II, and this mixture is separated into its components and(c) if desired, the ether II obtained in proces stage (b) or an aqueous solution of this ether and/or the reacted mixtures containing this ether and obtained from process stage (a) or (b) is allowed to react at from 50.degree. to 150.degree. C. with the dialkylamine IV to give a mixture of a 3-dialkylaminopropionitrile I and ethylenecyanohydrin III, and, if desired, the said mixture is separated into its components.
    • 3-二烷基氨基丙腈其中R 1和R 2各自为可以连接形成5元或6元环的C 1 -C 4 - 烷基,双 - (2-氰基乙基)醚II NC-CH 2 -CH 2 - O-CH 2 -CH 2 -CN II和如果需要,乙烯基氰醇III HO-CH 2 -CH 2 -CN III通过以下方法共同制备,其中(a)丙烯腈和水在碱的存在下在60℃至 150℃,得到丙烯腈,水和双 - (2-氰基乙基)醚II的混合物,碱为矿物碱,季氮碱或它们的混合物,(b)该混合物在约0℃ 与二烷基胺(通式IV IV)反应,得到水,二烷基氨基丙腈I和双 - (2-氰基乙基)醚II的混合物,将该混合物分离成其组分,(c )如果需要,在步骤阶段(b)中获得的醚II或该醚的水溶液和/或含有该醚的反应混合物从工艺步骤(a)或(b)获得, 使其与二烷基胺IV在50-150℃下反应,得到3-二烷基氨基丙腈I和乙基烯丙醇III的混合物,如果需要,将所述混合物分离成其组分。