PROCESS FOR THE EPOXIDATION OF AN OLEFIN WITH IMPROVED ENERGY BALANCE
    92.
    发明申请
    PROCESS FOR THE EPOXIDATION OF AN OLEFIN WITH IMPROVED ENERGY BALANCE 有权
    具有改善能量平衡的烯烃的环氧化方法

    公开(公告)号:US20100081834A1

    公开(公告)日:2010-04-01

    申请号:US11814110

    申请日:2006-01-09

    IPC分类号: C07D301/12

    CPC分类号: C07D301/12 Y02P20/582

    摘要: The invention relates to a process for the epoxidation of an olefin comprising (a) reacting the olefin with hydrogen peroxide in the presence of methanol as solvent in at least two reaction stages to obtain a mixture (M-a) comprising olefin oxide, unreacted olefin, methanol and water, wherein between at least two reaction stages, olefin oxide is separated by distillation; (b) separating unreacted olefin from the mixture (M-a) by distillation to obtain a mixture (M-bi) comprising at least 80 wt.-% of olefin and a mixture (M-bii) comprising methanol, water and at least 7 wt.-% of olefin oxide; (c) separating olefin oxide from the mixture (M-bii) in at least one distillation stage to obtain a mixture (M-ci) comprising at least 99 wt.-% of olefin oxide and a mixture (M-cii) comprising water and at least 55 wt.-% of methanol; (d) separating methanol from the mixture (M-cii) in at least one distillation stage to obtain a mixture (M-di) comprising at least 85 wt.-% of methanol and up to 10 wt.-% of water, and a mixture (M-dii) comprising at least 90 wt.-% of water; wherein a vapor top stream (Td) obtained from at least one distillation column used in (d), said vapor top stream (Td) comprising at least 85 wt.-% methanol, is used to operate at least partially at least one vaporizer used in at least one distillation column used in at least one of stages (a), (b) and (c).

    摘要翻译: 本发明涉及烯烃的环氧化方法,其包括(a)在至少两个反应阶段中在甲醇作为溶剂的存在下使烯烃与过氧化氢反应,以获得包含烯烃氧化物,未反应的烯烃,甲醇的混合物(Ma) 和水,其中在至少两个反应阶段之间,通过蒸馏分离烯烃氧化物; (b)通过蒸馏从混合物(Ma)中分离未反应的烯烃,得到包含至少80重量%的烯烃和包含甲醇,水和至少7重量%的烯烃的混合物(M-bii)的混合物(M-bi) .-%的烯烃氧化物; (c)在至少一个蒸馏阶段从所述混合物(M-bii)分离烯烃氧化物以获得包含至少99重量%的烯烃氧化物的混合物(M-ci)和包含水的混合物(M-cii) 和至少55重量%的甲醇; (d)在至少一个蒸馏阶段中从混合物(M-cii)中分离甲醇以获得包含至少85重量%的甲醇和至多10重量%的水的混合物(M-di),以及 包含至少90重量%的水的混合物(M-dii) 其中从(d)中使用的至少一个蒸馏塔获得的蒸汽顶部流(Td),所述蒸气顶部流(Td)包含至少85重量%的甲醇,用于至少部分地使用至少一个使用的蒸发器 在(a),(b)和(c)中的至少一个中使用的至少一个蒸馏塔中。

    Selective posttranslational modification of phage-displayed polypeptides
    98.
    发明申请
    Selective posttranslational modification of phage-displayed polypeptides 有权
    噬菌体展示多肽的选择性翻译后修饰

    公开(公告)号:US20070178448A1

    公开(公告)日:2007-08-02

    申请号:US11580223

    申请日:2006-10-11

    IPC分类号: C12Q1/70 C12N7/01

    摘要: The invention relates to posttranslational modification of phage-displayed polypeptides. These displayed polypeptides comprise at least one unnatural amino acid, e.g., an aryl-azide amino acid such as p-azido-L-phenylalanine, or an alkynyl-amino acid such as para-propargyloxyphenylalanine, which are incorporated into the phage-displayed fusion polypeptide at a selected position by using an in vivo orthogonal translation system comprising a suitable orthogonal aminoacyl-tRNA synthetase and a suitable orthogonal tRNA species. These unnatural amino acids advantageously provide targets for posttranslational modifications such as azide-alkyne [3+2] cycloaddition reactions and Staudinger modifications.

    摘要翻译: 本发明涉及噬菌体展示多肽的翻译后修饰。 这些显示的多肽包含至少一个非天然氨基酸,例如芳基叠氮氨基酸如对叠氮基-L-苯丙氨酸或炔基 - 氨基酸如对 - 炔丙氧基苯丙氨酸,其被并入噬菌体展示的融合物 通过使用包含合适的正交氨酰-tRNA合成酶和合适的正交tRNA物质的体内正交翻译系统,在选定位置上的多肽。 这些非天然氨基酸有利地提供翻译后修饰的靶标,例如叠氮炔 - 炔[3 + 2]环加成反应和施陶丁格修饰。