Ditert-butyl 2-[(4-methoxyphenyl)methylidene]propanedioate | 1221507-70-5

• 分子结构分类: 有机化合物 - 苯丙烷和聚酮 - 肉桂酸及其衍生物
• 英文名称: Ditert-butyl 2-[(4-methoxyphenyl)methylidene]propanedioate
• CAS: 1221507-70-5
• 化学式: C₁₉H₂₆O₅
• 分子量: 334.412
• InChiKey: WQZIOOAGEDPYDF-UHFFFAOYSA-N

计算性质

• 辛醇/水分配系数(LogP)：
  4.5
• 重原子数：
  24
• 可旋转键数：
  8
• 环数：
  1.0
• sp3杂化的碳原子比例：
  0.47
• 拓扑面积：
  61.8
• 氢给体数：
  0
• 氢受体数：
  5

反应信息

• 作为反应物：
  描述：

  Ditert-butyl 2-[(4-methoxyphenyl)methylidene]propanedioate 、 甘氨酸,N-[(4-甲氧苯基)亚甲基]-,甲基酯 在 silver(I) acetate 、 三乙胺 、 三苯基膦 作用下， 以 二氯甲烷 为溶剂， 生成 (2S,3S,5S)-4,4-di-tert-butyl 2-methyl 3,5-bis(4-methoxyphenyl)pyrrolidine-2,4,4-tricarboxylate
  参考文献：
  名称：

  exo-Selective asymmetric 1,3-dipolar cycloaddition of azomethine ylides with alkylidene malonates catalyzed by AgOAc/TF-BiphamPhos

  摘要：

  首次报道了银乙酸盐/TF-BiphamPhos催化的烷基烯基美克酸酯与肟亚胺负电荷的exo选择性不对称1,3-双极环加成反应，具有良好的产率以及良好到优异的对映体/非对映体选择性。

  DOI：

  10.1039/b919625k

文献信息

• COMBINATION OF UV ABSORBER AND PIGMENT FOR PROTECTION OF SUBSTRATES FROM UV/VIS-RADIATION
  申请人：BASF SE

  公开号：US20170369455A1

  公开（公告）日：2017-12-28

  A coating composition, which contains one or more compounds (A) according to formula (I) and a pigment (B) having a minimum integrated transmittance within the range of 380 to 600 nm, is provided: In formula (I), each R 1 , R 2 and R 3 is independently —OR 4 , R 4 being independently hydrogen or a C 1 to C 24 hydrocarbyl group optionally containing heteroatoms, or C 1 to C 24 hydrocarbyl groups optionally containing heteroatoms; n is 2, 3, 4 or 5; o is 2, 3, 4 or 5; p is 2, 3, 4 or 5; with the proviso that at least one of R 1 and at least one of R 2 and at least one of R 3 is —OR 4 . A coating is obtained by applying the coating composition to a substrate for protecting the substrate against UV/Vis-radiation or for stabilizing the substrate against the deleterious influence of UV/Vis-radiation.

  提供一种涂层组合物，包含一个或多个符合式(I)的化合物(A)和一个具有在380至600纳米范围内的最小积分透射率的颜料(B)： 在式(I)中，每个R1、R2和R3独立地为—OR4，其中R4独立地为氢或C1到C24的烃基，可选地含有杂原子，或C1到C24的烃基，可选地含有杂原子；n为2、3、4或5；o为2、3、4或5；p为2、3、4或5；但至少一个R1、至少一个R2和至少一个R3为—OR4。通过将涂层组合物应用于基底上，可以获得一种涂层，用于保护基底免受UV/Vis辐射的影响或稳定基底免受UV/Vis辐射的有害影响。
• BENZYLIDENE MALONATES
  申请人：Hansch Markus

  公开号：US20120128745A1

  公开（公告）日：2012-05-24

  Disclosed is the use of benzylidene malonates of formula (1) wherein R 1 is methyl; ethyl; propyl; or n-butyl; if R 1 is methyl, then R is tert. butyl; a radical of formula (1a) or a radical of formula (1b) wherein R 2 and R 3 , independently from each other are hydrogen; or methyl; R 4 is methyl; ethyl; or n-propyl; R 5 and R 6 independently from each other are hydrogen; or C 1 -C 3 alkyl; if R 1 is ethyl; propyl; or n-butyl, then R is isopropyl; for the protection of human and animal hair and skin against UV radiation.
• WATER-RESISTANT COSMETIC FORMULATIONS COMPRISING A HYDROPHOBICALLY MODIFIED VINYLPYRROLIDONE COPOLYMER
  申请人：Kessler Veronique

  公开号：US20120276027A1

  公开（公告）日：2012-11-01

  The present invention relates to the use of copolymers comprising N-vinylpyrrolidone and a hydrophobically modified acrylic acid derivative as agents for improving the water resistance of a cosmetic formulation, and to the use of these copolymers in sunscreen compositions for increasing the sun protection factor, and furthermore the present invention relates to cosmetic formulations comprising these copolymers.
• US9364418B2
  申请人：——

  公开号：US9364418B2

  公开（公告）日：2016-06-14
• [EN] BENZYLIDENE MALONATES<br/>[FR] MALONATES DE BENZYLIDÈNE
  申请人：BASF SE

  公开号：WO2010136360A2

  公开（公告）日：2010-12-02

  Disclosed is the use of benzylidene malonates of formula (1), wherein R1 is methyl; ethyl; propyl; or n-butyl; if R1 is methyl, then R is tert. butyl; formula (A); a radical of formula (1a); or a radical of formula (1b); wherein R2 and R3, independently from each other are hydrogen; or methyl; R4 is methyl; ethyl; or n-propyl; R5 and R6 independently from each other are hydrogen; or C1-C3alkyl; if R1 is ethyl; propyl; or n-butyl, then R is isopropyl; for the protection of human and animal hair and skin against UV radiation.