6147-66-6Relevant articles and documents
Preparation method of diallylamine and hydrochloride thereof
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Paragraph 0047; 0054; 0055, (2019/03/08)
The invention belongs to the technical field of organic synthesis, and in particular relates to a preparation method of diallylamine and hydrochloride thereof. The preparation method comprises the following steps: inputting ammonia water into a reaction kettle, adding a catalyst, dropwise adding 3-chloropropene at a constant temperature and a constant pressure, heating the mixture to 50-55 DEG C after dropwise addition, keeping the temperature for 1 hour, and reducing the temperature to 35-40 DEG C to obtain slurry; extracting the slurry to a distilling kettle, adding sodium hydroxide and a byproduct ammonium chloride into the distilling kettle to react, absorbing generated ammonia water with water and reusing the same, neutralizing the same, starting distillation till a water phase is obtained, adding caustic soda flakes to dehydrate, cyclically using the dehydrated alkaline liquor t o obtain a diallylamine coarse product; and inputting the coarse product into a rectifying kettle, taking a small amount of precomponent first, then receiving diallylamine, and returning the precomponent to a reaction kettle to be used. The diallylamine and hydrochloride thereof are prepared by adopting an amination process, so that the method is safe and is guaranteed, and meanwhile, excessive ammonia water and alkaline water are fully recycled, so that the preparation method is low in energy consumption and little in pollution, and the three wastes can be recycled.
Polymers containing spirobicyclic ammonium moieties as bile acid sequestrants
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, (2008/06/13)
The present invention relates to a method for sequestering bile acids in a patient and to particular polymers for use in the method. The method comprises administering a therapeutically effective amount of a spirobicyclic ammonium moiety-containing polymer composition to a mammal, such as a human, whereby bile acids are sequestered. The polymers of the invention comprise spirobicyclic ammonium moieties and optionally, further comprise a hydrophobic substituent, a quaternary ammonium-containing substituent or a combination thereof.