Carbonic acid, methyl 2,4,6-trichlorophenyl ester | 98557-20-1

• 分子结构分类: 有机化合物 - 苯类化合物 - 苯和取代衍生物
• 英文名称: Carbonic acid, methyl 2,4,6-trichlorophenyl ester
• 英文别名: methyl (2,4,6-trichlorophenyl) carbonate
• CAS: 98557-20-1
• 化学式: C₈H₅Cl₃O₃
• 分子量: 255.485
• InChiKey: JGAGOAOZVMDFGW-UHFFFAOYSA-N

物化性质

• 沸点：
  324.6±42.0 °C(Predicted)
• 密度：
  1.509±0.06 g/cm3(Temp: 20 °C; Press: 760 Torr)(Predicted)

计算性质

• 辛醇/水分配系数(LogP)：
  4
• 重原子数：
  14
• 可旋转键数：
  3
• 环数：
  1.0
• sp3杂化的碳原子比例：
  0.12
• 拓扑面积：
  35.5
• 氢给体数：
  0
• 氢受体数：
  3

反应信息

• 作为反应物：
  描述：

  Carbonic acid, methyl 2,4,6-trichlorophenyl ester 在 4-二甲氨基吡啶 作用下， 反应 1.0h， 以89%的产率得到2,4,6-三氯苯甲醚
  参考文献：
  名称：

  五烷基胍作为醚化和酯化催化剂

  摘要：

  已经制备了几种五烷基胍，并且发现它们是用于由碳酸盐制备芳基和芳烷基醚以及用于苯酚与碳酸二甲酯甲基化的优良催化剂。它们也可作为有效的催化剂，用于酸与烷基氯甲酸酯的酯化反应，而不是叔醇与乙酸酐的乙酰化反应。

  DOI：

  10.1016/s0040-4020(01)89753-2
• 作为产物：
  描述：

  氯甲酸甲酯 、 2,4,6-三氯苯酚 在 sodium hydride 作用下， 生成 Carbonic acid, methyl 2,4,6-trichlorophenyl ester
  参考文献：
  名称：

  五烷基胍作为醚化和酯化催化剂

  摘要：

  已经制备了几种五烷基胍，并且发现它们是用于由碳酸盐制备芳基和芳烷基醚以及用于苯酚与碳酸二甲酯甲基化的优良催化剂。它们也可作为有效的催化剂，用于酸与烷基氯甲酸酯的酯化反应，而不是叔醇与乙酸酐的乙酰化反应。

  DOI：

  10.1016/s0040-4020(01)89753-2

文献信息

• 8-ARM POLYETHYLENE GLYCOL DERIVATIVE, MANUFACTURING METHOD AND MODIFIED BIO-RELATED SUBSTANCE THEREBY
  申请人：Xiamen Sinopeg Biotech Co., Ltd.

  公开号：EP3315531A1

  公开（公告）日：2018-05-02

  Disclosed are an 8-arm polyethylene glycol (PEG) derivative (formula 1), manufacturing method and modified bio-related substance thereby, wherein a tetravalent group U and four trivalent groups Ec form a highly symmetric octavalent central structure CORE0 together, Lc connects the octavalent center to eight PEG arms having polydiversity or monodiversity and having n1-n8 as the degrees of polymerization thereof. The terminal of one PEG chain is connected to at least one functional group F (k ≥ 1), and said PEG chain and F can be directly connected (g = 0) or connected with a divalent linking group L0 connected with a terminal branched group G (g = 1) therebetween. The latter provides more reacting sites to combine more pharmaceutical molecules, thereby increasing the drug loading capacity. The near-center symmetric structure of the derivative allows more precise control over the molecular weight during large-scale production, thereby facilitating acquisition of a product having a narrower molecular weight distribution. A bio-related substance modified thereby has a more uniform and controllable performance.

  本发明公开了一种 8 臂聚乙二醇（PEG）衍生物（式 1）、其制造方法和改性生物相关物质，其中一个四价基团 U 和四个三价基团 Ec 共同形成一个高度对称的八价中心结构 CORE0，Lc 将八价中心连接到八个 PEG 臂上，这些 PEG 臂具有多元性或单元性，其聚合度为 n1-n8。一条 PEG 链的末端与至少一个官能团 F（k ≥ 1）相连，所述 PEG 链和 F 可以直接相连（g = 0），也可以通过二价连接基 L0 与中间的末端支化基 G（g = 1）相连。后者提供了更多的反应位点，可以结合更多的药物分子，从而提高药物负载能力。衍生物的近中心对称结构可以在大规模生产过程中更精确地控制分子量，从而有利于获得分子量分布更窄的产品。由此改性的生物相关物质具有更均匀、更可控的性能。
• MULTIFUNCTIONALIZED POLYETHYLENE GLYCOL DERIVATIVE AND PREPARATION METHOD THEREFOR
  申请人：XIAMEN SINOPEG BIOTECH CO., LTD.

  公开号：US20170312363A1

  公开（公告）日：2017-11-02

  Disclosed are a multifunctionalized polyethylene glycol derivative and a preparation method therefor. The derivative has an H-shaped structure as represented by formula (1) and comprises one linear core LPEG and four PEG branch chains, where n 1 , n 2 , n 3 , and n 4 respectively are the degrees of polymerization of the branch chains, U 1 and U 2 are trivalent branching groups connecting the core LPEG to two of the PEG branch chains, F 1 and F 2 contain a functional group or a protected form R 01 thereof and may or may not contain a branched group G, correspondingly, the number of R 01 is one or more, F 1 and F 2 are either identical or different, any one linking group in the molecule or any linking group formed with an adjacent heteroatom group can either remain stable or be degraded, and any one PEG segment in the molecule is discretely polydispersed or monodispersed. The multifunctional polyethylene glycol is flexible and diverse in terms of branch structures and the lengths of branching arms, has various parameters and performance indicators that are adjustable and easy to control, and has a broad applicability.
• Pentaalkylguanidines as etherification and esterification catalysts
  作者：Gérard Barcelo、Denis Grenouillat、Jean-Pierre Senet、Gérard Sennyey

  DOI：10.1016/s0040-4020(01)89753-2

  日期：1990.1

  Several pentaalkylguanidines have been prepared and found to be superior catalysts for the preparation of aryl and aralkyl ethers from carbonates and for the methylation of phenols with dimethylcarbonate. They also act as effective catalysts for esterification of acids with alkyl chloroformates but not for the acetylation of tertiary alcohols with acetic anhydride.

  已经制备了几种五烷基胍，并且发现它们是用于由碳酸盐制备芳基和芳烷基醚以及用于苯酚与碳酸二甲酯甲基化的优良催化剂。它们也可作为有效的催化剂，用于酸与烷基氯甲酸酯的酯化反应，而不是叔醇与乙酸酐的乙酰化反应。