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    • 4. 发明申请
    • METHOD OF PRODUCING THIETHANE-3-AMINES BY THE REDUCTIVE AMINATION OF THIETHANE-3-ONES
    • PROCESS FOR通过的硫杂环丁烷-3-酮的还原胺化PRODUCING硫杂环丁烷胺3
    • WO1996026203A1
    • 1996-08-29
    • PCT/EP1996000392
    • 1996-01-31
    • DEGUSSA AKTIENGESELLSCHAFTKNAUP, GünterRETZOW, StefanSCHWARM, MichaelDRAUZ, Karlheinz
    • DEGUSSA AKTIENGESELLSCHAFT
    • C07D331/04
    • C07D331/04
    • The invention concerns a method of producing thiethane amines of general formula (I), in which R -R , independently of one another, are identical or different and stand for H, C1-C6-alkyl, C3-C6-cycloalkyl, aryl and arylalkyl, wherein the R -R groups, where possible and acceptable, are linear or branched, halogen-substituted and/or N, O, S hetero atom-substituted, and wherein two of the R -R groups can in each case be attached to form a ring, by condensing thiethane-ones of general formula (II), in which R -R have the meanings given in formula (I), with amine derivatives of general formula (III) NH2-X, in which X stands for OH, O-alkyl, O-aryl, O-acyl or NHR , and R is C1-C4- alkyl, aryl, aralkyl, tosyl, mesyl or acyl, or their salts, such as for example hydrohalides, phosphates, citrates, acetates or sulphates, to form thiethane imines of general formula (IV), in which R -R have the meanings given in formula (I), and X has the meaning given in formula (III) and subsequently reducing the resultant thiethane imine derivatives. The invention is characterized in that condensation is carried out in the autoclave at a temperature of more than 80 DEG C, preferably more than 100 DEG C, in the presence of a salt of an acid whose pK value is between 1 and 4, reduction being carried out with sodium or lithium hydroboron and an activator. The thiethane amines of general formula (I) are used as amide building blocks for sweeteners, imparting extremely good sweetening power thereto.
    • 一种制备Thietanaminen通式(I)其中R <1> -R <4>独立地相同或不同,为H,C1-C6烷基,C3-C6环烷基,芳基和芳基烷基,其中基团R处理 <1> -R <4>在可能和可允许的直链或支链的,卤素取代的和/或N,O,可以是S-杂原子取代的,并且其中的两个基团R <1> -R <4>被连接以形成一个环 能,通过Thietanonen的缩合通式(II)其中R <1> -R <4>如式定义同上,与通式胺衍生物(I)(III)NH 2-X,其中X是OH, O-烷基,O-芳基,O-酰基或NHR <5>和R <5> = C1-C4烷基,芳基,芳烷基,甲苯磺酰基,甲磺酰基或酰基或它们的例如氢卤酸盐,磷酸盐的盐, 柠檬酸盐,乙酸盐或硫酸盐,硫杂环丁烷至(IV)其中,R <1> -R <4>如式如上所定义的(I)通式亚胺和X的含义与在式(III),和安格 护目镜或减少Thietaniminderivate的获得,其特征在于,在> 80℃的温度,优选> 100℃,在其pK值在1和4之间的酸的盐的存在下,和减少与缩合在高压釜中 执行钠或硼氢化锂和活化剂。 的硫杂环丁胺通式(I)是甜味剂的Amidbausteine并为他们提供一个极端的甜味。