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1.发明授权Process for the synthesis of aliphatic, cycloaliphatic or araliphatic chloroformates 失效用于合成脂族，脂环族或芳脂族氯甲酸酯的方法公开(公告)号：US06696590B2
公开(公告)日：2004-02-24
申请号：US10022963
申请日：2001-12-18
IPC分类号： C07C6996
摘要： The disclosure relates to a process for the synthesis of substituted or unsubstituted aliphatic, cycloaliphatic or araliphatic chloroformates by reaction of the corresponding alcohol with phosgene, diphosgene and/or triphosgene. The reaction is carried out under a pressure of between 15×103 Pa and 85×103 Pa and at a temperature of between −30° C. and +50° C. The process is particularly well suited to the preparation of menthyl chloroformate and benzyl chloroformate.
摘要翻译： 本公开涉及通过相应的醇与光气，双光气和/或三光气的反应来合成取代或未取代的脂族，脂环族或芳脂族氯甲酸酯的方法。 该反应在15×10 3 Pa至85×10 3 Pa的压力和-30℃至+ 50℃的温度下进行。该方法特别适用于制备氯甲酸薄荷酯 和氯甲酸苄酯。
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公开(公告)号：US06699988B2
公开(公告)日：2004-03-02
申请号：US09840388
申请日：2001-04-23
IPC分类号： C07D22310
CPC分类号： C07D227/087
摘要： The invention relates to a process for the preparation of N,N′-carbonylbislactams by reaction of phosgene with at least one lactam which is characterized in that the tertiary amine is chosen from the group consisting of non-nucleophilic aliphatic tertiary amines. N,N′-Carbonylbislactams of high purity are thus obtained with good yields, both in the laboratory and on the industrial scale.
摘要翻译： 本发明涉及通过光气与至少一种内酰胺反应制备N，N'-羰基双内酰胺的方法，其特征在于叔胺选自非亲核脂族叔胺。 因此，在实验室和工业规模上都能获得高纯度的N，N'-羰基双内酰胺。
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公开(公告)号：US6020498A
公开(公告)日：2000-02-01
申请号：US358816
申请日：1999-07-22
IPC分类号： C07D231/38 , C07D231/02 , C07D231/40 , C09D487/04
CPC分类号： C07D231/40
摘要： The invention relates to a process for preparing carboxamide oximes of the formula (I): in which R.sup.1 represents an aryl or heteroaromatic group, and R.sup.2 and R.sup.3 represent a hydrogen atom or groups as defined in the description, characterized by the three following steps:1) An amide of the formula (II) R.sup.1 CONHR.sup.4, with R.sup.1 having the previous meaning and R.sup.4 being a C.sub.1 to C.sub.8 alkyl group, is reacted with a chlorinating agent in order to obtain the corresponding chloroimine,2) The resulting chloroimine is then caused to react with an aminopyrazole in order to obtain a novel disubstituted amidine,3) The resulting amidine is caused to react with hydroxylamine or one of its salts.Carboxamide oximes are prepared more rapidly, and in a good yield, in this way. They are useful as synthesis intermediates, in particular for preparing photographic developing agents.
摘要翻译： 本发明涉及一种制备式（I）的羧酰胺肟的方法：其中R 1表示芳基或杂芳族基团，R 2和R 3表示如说明书中定义的氢原子或基团，其特征在于以下三个步骤： 1）将式（II）R1CONHR4的酰胺（其具有前述含义的R 1和R 4为C 1〜C 8烷基）与氯化剂反应，得到相应的氯亚胺，2）然后使所得的氯亚胺 与氨基吡唑反应以获得新的二取代的脒3）使得到的脒与羟胺或其盐之一反应。 以这种方式更快速地制备羧酰胺肟，并以良好的产率制备。 它们可用作合成中间体，特别是用于制备照相显影剂。
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4.发明授权Process for the preparation of ωbenzyl esters of amino diacids and of alkanesulphonates of these esters, and these alkanesulphonates 失效用于制备氨基二酸的ω-苄基酯和这些酯的这些烷基磺酸盐的烷基磺酸盐的方法公开(公告)号：US07078564B2
公开(公告)日：2006-07-18
申请号：US10740206
申请日：2003-12-17
IPC分类号： C07C229/00
CPC分类号： C07C227/18 , C07C229/24
摘要： The invention relates to a process for the preparation of an ω-benzyl ester of an amino diacid, characterized in that the amino diacid is reacted with a benzyl alcohol derivative of formula (I) in which the R1 substituent or substituents, which are identical or different, represent a hydrogen atom, a C1 to C4 alkyl group, a C1 to C4 alkoxy group or a halogen atom and n is equal to 1, 2 or 3, in the presence of at least one mol per mole of the amino diacid of an alkanesulphonic acid, optionally in the presence of a solvent. The intermediate alkanesulphonates of the ω-benzyl esters of amino diacids and the ω-benzyl esters of amino diacids are obtained with a good yield and an excellent purity by virtue of this process.
摘要翻译： 本发明涉及一种制备氨基二酸的ω-苄基酯的方法，其特征在于氨基二酸与式（I）的苄醇衍生物反应，其中R 1， 取代基或取代基相同或不同，表示氢原子，C 1至C 4烷基，C 1至C 4烷基，C 1至C 4 在烷基磺酸的氨基二酸至少1摩尔的存在下，任选地，在烷基磺酸的存在下，烷基磺酸的烷基或卤素原子，n等于1,2或3， 溶剂。 通过该方法可以获得氨基二酸的ω-苄基酯和氨基二酸的ω-苄基酯的中间体烷基磺酸盐，其产率高，纯度高。
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