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    • 84. 发明授权
    • Liquid phase catalytic fluorination of hydrochlorocarbon and
hydrochlorofluorocarbon
    • 液相催化氟化氟氯烃和氢氯氟烃
    • US6023004A
    • 2000-02-08
    • US744157
    • 1996-11-12
    • Alagappan ThenappanHsueh S. TungRobert L. Bell
    • Alagappan ThenappanHsueh S. TungRobert L. Bell
    • B01J27/10B01J27/132B01J27/135C07B61/00C07C17/00C07C17/087C07C17/20C07C19/08C07C17/08
    • C07C17/206C07C17/00C07C17/087Y10S526/906Y10S526/913
    • A process for the catalytic fluorination of hydrochlorocarbons and hydrochlorofluorocarbons in the liquid phase. The process is useful for fluorinating hydrochloropropanes, hydrochlorofluoropropanes, hydrochloropropenes and hydrochlorofluoropropenes and most particularly useful for fluorinating 1,1,1,3,3-pentachloropropane to 1,1,1,3,3-pentafloropropane. Suitable catalysts include (i) a pentavalent molybdenum halide; (ii) a tetravalent tin halide; (iii) a tetravalent titanium halide; (iv) a mixture of a pentavalent tantalum halide with a tetravalent tin halide; (v) a mixture of a pentavalent tantalum halide with a tetravalent titanium halide; (vi) a mixture of a pentavalent niobium halide with a tetravalent tin halide; (vii) a mixture of a pentavalent niobium halide with a tetravalent titanium halide; (viii) a mixture of a pentavalent antimony halide with a tetravalent tin halide; (ix) a mixture of a pentavalent antimony halide with a tetravalent titanium halide; (x) a mixture of a pentavalent molybdenum halide with a tetravalent tin halide; (xi) a mixture of a pentavalent molybdenum halide with a tetravalent titanium halide and (xii) a mixture of a pentavalent antimony halide with a trivalent antimony halide. Products of this process are useful in a variety of applications including solvents, blowing agents, and refrigerants.
    • 在液相中氢氯碳氢化合物和氢氯氟烃的催化氟化的方法。 该方法可用于氟化氢氯丙烷,氢氯氟丙烷,氢氯丙烯和氢氯氟丙烯,最特别用于将1,1,1,3,3-五氯丙烷氟化为1,1,1,3,3-五氟丙烷。 合适的催化剂包括(i)五价钼卤化物; (ii)四价卤化锡; (iii)四价钛卤化物; (iv)五价卤化钽与四价卤化锡的混合物; (v)五价钽卤化物与四价钛卤化物的混合物; (vi)五价铌卤化物与四价卤化锡的混合物; (vii)五价铌卤化物与四价钛卤化物的混合物; (viii)五价锑卤化物与四价卤化锡的混合物; (ix)五价锑卤化物与四价钛卤化物的混合物; (x)五价钼卤化物与四价卤化锡的混合物; (xi)五价钼卤化物与四价卤化钛的混合物,(xii)五价锑卤化物与三价卤化锑的混合物。 该方法的产品可用于各种应用,包括溶剂,发泡剂和制冷剂。
    • 86. 发明授权
    • Cyclic peptide mixtures via side chain or backbone attachment and solid
phase synthesis
    • 通过侧链或骨架连接和固相合成的环状肽混合物
    • US6008058A
    • 1999-12-28
    • US423091
    • 1995-04-18
    • Arno F. SpatolaKrzysztof DarlakJames Jun WenPeteris Romanovskis
    • Arno F. SpatolaKrzysztof DarlakJames Jun WenPeteris Romanovskis
    • C07K1/04C07K7/50C07K7/64G01N33/543C07C7/00C07C17/00C07C5/12
    • C07K7/64C07K1/047C07K7/50
    • A method of preparing cyclic peptide mixtures via side chain or backbone and solid phase synthesis. The cyclic peptide mixtures form libraries that are useful for screening purposes featuring the attachment of an amino acid to a solid support through its side chain or backbone in order to mimic solution cyclization procedures with linear peptides. In the preferred embodiment, Boc chemistry is used for peptide synthesis, wherein the initial attachment of a trifunctional amino acid is by the aspartyl side chain (with OFm for alpha-carboxyl protection). Cyclization is performed using uronium reagents with racemization suppressant, and a strong acid (HF) is used for deprotection and cleavage. The strategy has been used for the preparation of a series of cyclic peptide mixtures. The procedure is expandable to include at least twenty different amino acids at each position (except the resin linked position where most attachments are by Asp, Lys, Glu, or Orn). The cyclic peptide mixtures vary in ring size from about four to about twelve residues.
    • 通过侧链或骨架和固相合成制备环肽混合物的方法。 环状肽混合物形成可用于筛选目的的文库,其特征在于通过其侧链或主链将氨基酸连接到固体支持物上,以模拟具有线性肽的溶液环化程序。 在优选的实施方案中,Boc化学用于肽合成,其中三官能氨基酸的初始附着是通过天冬氨酰侧链(具有用于α-羧基保护的OFm)。 使用具有消旋抑制剂的尿素试剂进行环化,使用强酸(HF)进行脱保护和切割。 该策略已被用于制备一系列环肽混合物。 该程序可扩展至每个位置至少包含二十个不同的氨基酸(除大多数附着物由Asp,Lys,Glu或Orn组成的树脂连接位置除外)。 环肽混合物的环尺寸约为四至十二个残基。