2-[(2,2-Difluoro-vinyloxy)-difluoro-methoxy]-1,1-difluoro-ethene | 791131-08-3

• 分子结构分类: 有机化合物 - 有机卤素化合物 - 乙烯基卤化物
• 英文名称: 2-[(2,2-Difluoro-vinyloxy)-difluoro-methoxy]-1,1-difluoro-ethene
• 英文别名: 1,1,4,4,7,7-Hexafluoro-3,5-dioxa-1,6-heptadiene；2-[2,2-difluoroethenoxy(difluoro)methoxy]-1,1-difluoroethene
• CAS: 791131-08-3
• 化学式: C₅H₂F₆O₂
• 分子量: 208.06
• InChiKey: QYWTVLBJGQEJCI-UHFFFAOYSA-N

计算性质

• 辛醇/水分配系数(LogP)：
  2.4
• 重原子数：
  13
• 可旋转键数：
  4
• 环数：
  0.0
• sp3杂化的碳原子比例：
  0.2
• 拓扑面积：
  18.5
• 氢给体数：
  0
• 氢受体数：
  8

反应信息

• 作为产物：
  描述：

  bis(2-chloro-2,2-difluoroethyl) thionocarbonate 在 氢氧化钾 、 溴 、 三氟化锑 、 氯 作用下， 以 二氯甲烷 、 二甲基亚砜 、 乙腈 为溶剂， 反应 7.5h， 生成 2-[(2,2-Difluoro-vinyloxy)-difluoro-methoxy]-1,1-difluoro-ethene
  参考文献：
  名称：

  Synthesis and Properties of Partially Fluorinated Amorphous Ring Containing Polymers:  Poly[bis(2,2-difluorovinyl)formal], Poly[bis(2,2-difluorovinyl)difluoroformal], and Poly[bis(1-deuterio-2,2-difluorovinyl)difluoroformal]

  摘要：

  Three novel partially fluorinated monomers, bis(2,2-difluorovinyl)formal (I), bis(2,2-difluorovinyl)difluoroformal (II), and bis(1-deuterio-2,2-difluorovinyl)difluoroformal (III), were prepared. These monomers were polymerized in bulk via free radical mechanism. Monomer I produced a crosslinked polymer, but monomers II and III yielded amorphous polymers (II-P and III-P) having five- and six-membered rings along the backbone. Polymers II-P and III-P were soluble not only in fluorinated solvents but also in nonfluorinated solvents such as THF, 1, 4-dioxane, DMF, and DMSO. They have good thermal stability (onset of decomposition > 400 degreesC), high glass transition temperatures (105 degreesC), and low dielectric constant (1.98-1.82 at frequency ranging from 0.1 to 3 x 10(6) Hz). Furthermore, these polymers are completely amorphous and possess outstanding optical clarity extending from visible to near-IR regions. The refractive indices of both polymers were measured at various wavelengths to evaluate material dispersion. The material dispersions of II-P and III-P were similar and had low values, which are comparable to perfluorinated polymers and much lower than perdeuterioPMMA. The unique optical properties of these polymers make them attractive for use as optical materials.

  DOI：

  10.1021/ma049462d

文献信息

• Synthesis and Properties of Partially Fluorinated Amorphous Ring Containing Polymers:  Poly[bis(2,2-difluorovinyl)formal], Poly[bis(2,2-difluorovinyl)difluoroformal], and Poly[bis(1-deuterio-2,2-difluorovinyl)difluoroformal]
  作者：Yu Yang、František Mikeš、Yasuhiro Koike、Yoshiyuki Okamoto

  DOI：10.1021/ma049462d

  日期：2004.10.1

  Three novel partially fluorinated monomers, bis(2,2-difluorovinyl)formal (I), bis(2,2-difluorovinyl)difluoroformal (II), and bis(1-deuterio-2,2-difluorovinyl)difluoroformal (III), were prepared. These monomers were polymerized in bulk via free radical mechanism. Monomer I produced a crosslinked polymer, but monomers II and III yielded amorphous polymers (II-P and III-P) having five- and six-membered rings along the backbone. Polymers II-P and III-P were soluble not only in fluorinated solvents but also in nonfluorinated solvents such as THF, 1, 4-dioxane, DMF, and DMSO. They have good thermal stability (onset of decomposition > 400 degreesC), high glass transition temperatures (105 degreesC), and low dielectric constant (1.98-1.82 at frequency ranging from 0.1 to 3 x 10(6) Hz). Furthermore, these polymers are completely amorphous and possess outstanding optical clarity extending from visible to near-IR regions. The refractive indices of both polymers were measured at various wavelengths to evaluate material dispersion. The material dispersions of II-P and III-P were similar and had low values, which are comparable to perfluorinated polymers and much lower than perdeuterioPMMA. The unique optical properties of these polymers make them attractive for use as optical materials.