3.4-Di-tert.-butyl-cyclobutandion | 22935-40-6

• 分子结构分类: 有机化合物 - 有机氧化合物
• 英文名称: 3.4-Di-tert.-butyl-cyclobutandion
• 英文别名: 3,4-Di-tert-butylcyclobutane-1,2-dione；3,4-ditert-butylcyclobutane-1,2-dione
• CAS: 22935-40-6
• 化学式: C₁₂H₂₀O₂
• 分子量: 196.29
• InChiKey: OVSWXTUVTXJGLB-UHFFFAOYSA-N

计算性质

• 辛醇/水分配系数(LogP)：
  2.8
• 重原子数：
  14
• 可旋转键数：
  2
• 环数：
  1.0
• sp3杂化的碳原子比例：
  0.83
• 拓扑面积：
  34.1
• 氢给体数：
  0
• 氢受体数：
  2

安全信息

• 海关编码：
  2914299000

反应信息

• 作为反应物：
  描述：

  甲醇 、 3.4-Di-tert.-butyl-cyclobutandion 生成 1-Hydroxy-2.3-di-tert.-butyl-cyclopropan-1-carbonsaeuremethylester
  参考文献：
  名称：

  Synthesis and properties of 3,4-di-t-butylbutanedione

  摘要：

  DOI：

  10.1016/s0040-4039(01)87936-3
• 作为产物：
  描述：

  2-Hydroxy-3,4-di-tert.-butyl-cyclobutanon 在 乙酸酐 、 二甲基亚砜 作用下， 生成 3.4-Di-tert.-butyl-cyclobutandion
  参考文献：
  名称：

  Synthesis and properties of 3,4-di-t-butylbutanedione

  摘要：

  DOI：

  10.1016/s0040-4039(01)87936-3

文献信息

• 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.
• Synthesis and properties of 3,4-di-t-butylbutanedione
  作者：Ae. de Groot、D. Oudman、Hans Wynberg

  DOI：10.1016/s0040-4039(01)87936-3

  日期：——