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    • 2. 发明授权
    • Method for the production of sucralose
    • 生产三氯蔗糖的方法
    • US08436157B2
    • 2013-05-07
    • US12409951
    • 2009-03-24
    • James Edwin Wiley, Jr.Duane A. LeinhosDavid A. DentelJohn Kerr
    • James Edwin Wiley, Jr.Duane A. LeinhosDavid A. DentelJohn Kerr
    • C07H1/00
    • C07H5/02C07H1/00
    • The present invention provides a method for producing sucralose from a feed stream including a sucrose-6-acylate in a reaction vehicle. The method includes: (i) reacting the sucrose-6-acylate with a chlorinating agent in order to chlorinate the 4, 1′ and 6′ positions of the sucrose-6-acylate; (ii) quenching the product stream of (i) with an aqueous solution of a base to provide a sucralose-6-acylate and the chloride salt of said base, wherein the concentration of the aqueous solution of the base is sufficiently high such that at least a portion of the chloride salt of the base is formed as a precipitate; (iii) either: deacylating the sucralose-6-acylate by treating the product stream of (ii) with a base and thereafter removing precipitated salt to provide a product stream including sucralose; or: removing precipitated salt from the product stream of (ii) and thereafter deacylating the sucralose-6-acylate by treating with a base to provide a product stream including sucralose; and (iv) isolating sucralose from the product stream of (iii).
    • 本发明提供了在反应载体中从包含蔗糖-6-酰化物的进料流中制备三氯半乳蔗糖的方法。 该方法包括:(i)使蔗糖-6-酰化物与氯化剂反应,以使蔗糖-6-酰化物的4,1'和6'位置氯化; (ii)用碱的水溶液淬灭(i)的产物流,得到三氯半乳蔗糖-6-酰化物和所述碱的氯化物盐,其中碱的水溶液的浓度足够高,使得在 至少一部分碱的氯化物盐形成沉淀物; (iii):通过用碱处理(ii)的产物流,然后除去沉淀的盐以提供包含三氯蔗糖的产物流,使三氯蔗糖-6-酰化物脱酰化; 或者:从(ii)的产物流中除去沉淀的盐,然后用碱处理三氯半乳蔗糖-6-酰化物,以提供包含三氯蔗糖的产物流; 和(iv)从(iii)的产物流中分离三氯半乳蔗糖。
    • 6. 发明申请
    • EXTRACTION OF LESS POLAR IMPURITIES FROM SUCRALOSE CONTAINING AQUEOUS FEED STREAMS
    • 从含有水分的饲料中提取较少的极性污染物
    • US20090259036A1
    • 2009-10-15
    • US12416541
    • 2009-04-01
    • James Edwin Wiley, JR.
    • James Edwin Wiley, JR.
    • C07H1/06
    • C07H5/02
    • A process for the purification of sucralose containing aqueous feed streams is disclosed. The process comprises the step of extracting an aqueous feed stream comprising sucralose and impurities less polar than sucralose, such as tetrachloro saccharides, with an organic solvent that is immiscible with water, such as ethyl acetate. In this step, the mass ratio of organic solvent to aqueous feed stream is in the range of 0.4 to 0.9. Greater than 50% of the sucralose and greater than 95% of the tetrachloro saccharide impurities are extracted into the organic extract. The organic extract is back extracted with water and the resulting aqueous extract recycled to the initial extraction step.
    • 公开了一种用于纯化含三氯蔗糖含水进料流的方法。 该方法包括提取包含三氯半乳蔗糖和比三氯半乳蔗糖(例如四氯糖)极性少的杂质的水性进料流与与水不混溶的有机溶剂,例如乙酸乙酯。 在该步骤中,有机溶剂与水性进料流的质量比在0.4至0.9的范围内。 将大于50%的三氯蔗糖和大于95%的四氯糖杂质提取到有机提取物中。 将有机萃取液用水反萃取,将所得含水萃取液再循环至初始萃取步骤。
    • 7. 发明申请
    • Extraction of Carboxylic Acids with Tin Compounds
    • 用锡化合物萃取羧酸
    • US20120289693A1
    • 2012-11-15
    • US13463332
    • 2012-05-03
    • David T. ColemanEdward MicinskiJames Edwin Wiley, JR.Thomas A. EilersDavid A. Dentel
    • David T. ColemanEdward MicinskiJames Edwin Wiley, JR.Thomas A. EilersDavid A. Dentel
    • C07C231/24C07H1/06C07H1/00
    • B01D11/04C07H13/02
    • A method of removing a carboxylic acid from a liquid including a tertiary amide solvent includes: A) forming an extraction medium including an acid-extracting tin species and an extraction solvent that is immiscible with the tertiary amide solvent; B) subsequently contacting the liquid with the extraction medium, forming a phase including a de-acidified tertiary amide solvent and a phase including the extraction solvent; and C) removing the phase including the extraction solvent, to afford a liquid including the de-acidified tertiary amide solvent. The acid-extracting tin species is one or more tin species obtainable by reaction of a di(hydrocarbyl)tin oxide with less than one equivalent of a carboxylic acid, tin species obtainable by reaction of a 1,3-diacyloxy-1,1,3,3-tetra-(hydrocarbyl)distannoxane with an aqueous base. A method of preparing a sucralose-6-acylate includes using the foregoing method to remove a carboxylic acid from a liquid including a tertiary amide solvent and the sucralose-6-acylate.
    • 从包括叔酰胺溶剂的液体中除去羧酸的方法包括:A)形成包含酸提取锡物质的萃取介质和与叔酰胺溶剂不混溶的萃取溶剂; B)随后使液体与提取介质接触,形成包含脱酸叔胺溶剂和包含萃取溶剂的相的相; 和C)除去包括萃取溶剂的相,得到包含脱酸叔酰胺溶剂的液体。 酸提取锡物质是通过二(烃基)氧化锡与小于1当量羧酸反应获得的一种或多种锡物质,可通过1,3-二酰氧基-1,1, 3,3-四(烃基)二锡氧烷与碱水溶液。 制备三氯蔗糖-6-酰化物的方法包括使用上述方法从包括叔酰胺溶剂和三氯蔗糖-6-酰化物的液体中除去羧酸。