Preparation and use of alkylating agents
    82.
    发明授权
    Preparation and use of alkylating agents 有权
    烷基化剂的制备和使用

    公开(公告)号:US07776309B2

    公开(公告)日:2010-08-17

    申请号:US10900066

    申请日:2004-07-26

    Applicant: John L. Lim

    Inventor: John L. Lim

    Abstract: Methods of alkylating target compounds are disclosed. The alkylating agent can be radiolabelled. In some instances, the alkylating agent is synthesized and then reacted with a target compound without an intervening purification step. The method comprises a) synthesizing an alkylating agent having the formula: X—(CR1R2)aCR3R4-LG wherein, a is 0, 1, 2 or 3, R1, R2, R3 and R4 are independently H, X or alkyl, X is a halogen or a label, with the proviso that at least one X is a halogen, LG is a leaving group; and b) directly reacting said alkylating agent with a target compound comprising an alkylation reactive group under conditions suitable for the alkylation of said target compound.

    Abstract translation: 公开了烷基化目标化合物的方法。 烷基化剂可以放射性标记。 在一些情况下,合成烷基化剂,然后与目标化合物反应而不需要介入纯化步骤。 该方法包括:a)合成具有下列通式的烷基化剂:X-(CR 1 R 2)a CR 3 R 4 -L-其中a为0,1,2或3,R 1,R 2,R 3和R 4独立地为H,X或烷基,X为 卤素或标记,条件是至少一个X是卤素,LG是离去基团; 和b)在适于所述目标化合物的烷基化的条件下,使所述烷基化剂与包含烷基化反应性基团的目标化合物直接反应。

    PROCESS FOR THE PREPARATION OF AMINO ACID METHYL ESTERS
    87.
    发明申请
    PROCESS FOR THE PREPARATION OF AMINO ACID METHYL ESTERS 有权
    制备氨基酸甲酯的方法

    公开(公告)号:US20100063312A1

    公开(公告)日:2010-03-11

    申请号:US12528691

    申请日:2008-03-10

    CPC classification number: C07C227/18 C07C2601/16 C07C229/32 C07C229/36

    Abstract: The present invention describes a process for the synthesis of an amino acid methyl ester comprising the following steps: (a) refluxing a reaction mixture comprising a free amino acid, methanol and a strong acid; (b) concentrating the mixture; (c) adding methanol; (d) repeating steps a-c one or more times.

    Abstract translation: 本发明描述了合成氨基酸甲酯的方法,包括以下步骤:(a)回流包含游离氨基酸,甲醇和强酸的反应混合物; (b)浓缩混合物; (c)加入甲醇; (d)重复步骤a-c一次或多次。

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