Sulfur transfer reagents for oligonucleotide synthesis
    6.
    发明授权
    Sulfur transfer reagents for oligonucleotide synthesis 失效
    用于寡核苷酸合成的硫转移试剂

    公开(公告)号:US06384209B1

    公开(公告)日:2002-05-07

    申请号:US08979864

    申请日:1997-11-26

    IPC分类号: C07H2100

    CPC分类号: C07C329/14

    摘要: The invention relates to the chemical synthesis of oligonucleotides and to chemical entities useful in such synthesis. More particularly, the invention relates to sulfurization of the internucleoside linkages of oligonucleotides. The invention provides new sulfur transfer reagents and processes for their use in sulfurizing oligonucleotides. The sulfur transfer reagents according to the invention are inexpensive to make, stable in storage and highly efficient in sulfurization.

    摘要翻译: 本发明涉及寡核苷酸的化学合成以及可用于这种合成的化学实体。 更具体地,本发明涉及寡核苷酸的核苷间键的硫化。 本发明提供新的硫转移试剂及其用于硫化寡核苷酸的方法。 根据本发明的硫转移试剂制备成本低,贮存稳定,硫化效率高。

    Method for preparing thionocarbamate and co-producing 2-mercaptoethanol or O-alkylthioethyl xanthate

    公开(公告)号:US11970441B2

    公开(公告)日:2024-04-30

    申请号:US16977107

    申请日:2018-12-07

    摘要: The invention belongs to the field of mineral flotation collector materials, and particularly discloses a method for preparing thionocarbamate. In the preparation process, xanthate and 2-haloethanol are esterified to obtain O-alkyl-S-hydroxyethyl xanthate, and then O-alkyl-S-hydroxyethyl xanthate and fatty amine are reacted to obtain a mixture of thionocarbamate and 2-mercaptoethanol. The mixture of thionocarbamate and 2-mercaptoethanol is washed with alkali, and the oil phase and water phase are separated. The oil phase and water phase are thionocarbamate and 2-hydroxyethylthiolate, respectively, and 2-mercaptoethanol is obtained by washing with an acid. 2-alkylthioethanol is obtained by reacting 2-hydroxyethanethiolate with alkyl halide, and then with carbon disulfide and alkali to prepare O-alkylthioethyl xanthate. Thionocarbamate, 2-mercaptoethanol and O-alkylthioethyl xanthate prepared by this method possess high yield and high purity. The process is green and environmentally friendly, and is beneficial to the industrialization of co-production.