Direct Racemic Mixture Synthesis of Fluorinated Amino Acids by Perfluoroalkyl Radical Addition to Dehydroamino Acids Terminated by Asymmetric Protonation
methods for the synthesis and purification of chiral organic compounds is a challenge in modern science and technology. Pharmaceutically and agro-chemically important compounds are especially required in optically pure form. We report the racemic mixturesynthesis of β-perfluoroalkyl α-amino acids, which is based on the In-mediated addition of perfluoroalkyl radicals to dehydroamino acids followed by asymmetric
开发有效的手性有机化合物合成和纯化方法是现代科学技术面临的挑战。尤其需要光学纯形式的药学和农业化学上重要的化合物。我们报告了 β-全氟烷基 α-氨基酸的外消旋混合物合成,该合成基于全氟烷基自由基与脱氢氨基酸的 In 介导加成,然后不对称质子化。所有对映异构体都可以通过使用单个手性 HPLC 色谱柱进行分离,而无需正交使用氟色谱柱。
Radiation-curable coating compositions and method of coating metal substrates therewith
申请人:ROHM AND HAAS COMPANY
公开号:EP0007747A1
公开(公告)日:1980-02-06
Radiation-curable compositions are disclosed which comprise radiation-reactive monomer and/or oligomer. In order to improve their adhesion to metal substrates, such as aluminum, steel, copper or zinc. 3-acryloxypropionic acid is incorporated into the compositions which may be cured by exposure to actinic radiation, such as ultraviolet, electron beam or mercury arc radiation.
Radiation curable compositions useful in image projection systems
申请人:Xu Pingyong
公开号:US20060223901A1
公开(公告)日:2006-10-05
A radiation curable composition comprising: A) at least one urethane poly(meth) acrylate compound; B) at least one poly(meth)acrylate compound; C) at least one polyester poly(meth)acrylate compound; D) at least one silicone poly(meth)acrylate compound; E) at least one visible light range free radial photopolymerization initiator; and F) at least one UV light range free radical polymerization initiator.
一种辐射固化组合物,包括A) 至少一种聚氨酯聚(甲基)丙烯酸酯化合物; B) 至少一种聚(甲基)丙烯酸酯化合物; C) 至少一种聚酯聚(甲基)丙烯酸酯化合物; D) 至少一种硅酮聚(甲基)丙烯酸酯化合物; E) 至少一种可见光范围自由径向光聚合引发剂;以及 F) 至少一种紫外光范围自由基聚合引发剂。
alpha-substituted acrylic acids and esters and polymers thereof
申请人:EASTMAN KODAK CO
公开号:US02563776A1
公开(公告)日:1951-08-07
YOKOYAMA, YUUSAKU;TAKAHASHI, MAKIO;KOHNO, YUKARI;KATAOKA, KAZUTAKA;FUJIKA+, HETEROCYCLES, 31,(1990) N, C. 803-804