四氢-吡喃-3,4-二醇 | 100937-79-9

• 分子结构分类: 有机化合物 - 有机杂环化合物 - 氧烷类
• 中文名称: 四氢-吡喃-3,4-二醇
• 英文名称: Tetrahydro-pyran-3,4-diol
• 英文别名: 1,5-Anhydro-2-deoxypentitol；oxane-3,4-diol
• CAS: 100937-79-9
• 化学式: C₅H₁₀O₃
• 分子量: 118.133
• InChiKey: PIWMSRFXAJSGLP-UHFFFAOYSA-N

物化性质

• 沸点：
  83-85 °C(Press: 1 Torr)
• 密度：
  1.291±0.06 g/cm3(Predicted)

计算性质

• 辛醇/水分配系数(LogP)：
  -1
• 重原子数：
  8
• 可旋转键数：
  0
• 环数：
  1.0
• sp3杂化的碳原子比例：
  1.0
• 拓扑面积：
  49.7
• 氢给体数：
  2
• 氢受体数：
  3

反应信息

• 作为反应物：
  描述：

  四氢-吡喃-3,4-二醇 在 sodium tetrahydroborate 、 sodium periodate 作用下， 生成 2-hydroxyethyl 3-hydroxypropyl ether
  参考文献：
  名称：

  Thermal synthesis and pyrolysis of a xylan

  摘要：

  A xylan has been synthesized in yields up to 64% by thermal polymerization of methyl beta-D-xylopyranoside, catalyzed by phosphoric acid. The polymer is highly branched, with d.p. approximately 20. The xylose units in the polymer are predominantly pyranose, with some furanose, and 14% of the nonreducing end groups are in the furanose form. The ''reducing'' end groups are at least partly in the form of methyl xylosides. Vacuum pyrolysis of the pure synthetic xylan gave a high char yield (48%, compare, for example 5% from pure cellulose), 1,4-anhydro-alpha-D-xylopyranose (5.7%), and 1,5-anhydro-4-deoxypent-1-en-3-ulose (2.4%). The structure of the latter compound was verified by degradation experiments and it was shown to be the compound previously isolated from pyrolysis of natural xylans and incorrectly assigned as 3-hydroxy-2-penteno- 1,5-lactone. This glyculose has considerable importance as a marker compound for xylans in pyrolysis of biomass materials.

  DOI：

  10.1016/0008-6215(91)84093-t
• 作为产物：
  描述：

  2H-吡喃-3,4-二酮 在 水 、 钯 作用下， 生成 四氢-吡喃-3,4-二醇
  参考文献：
  名称：

  Borsche, Chemische Berichte, 1916, vol. 49, p. 2544

  摘要：

  DOI：

文献信息

• WO2023/226920
  申请人：——

  公开号：——

  公开（公告）日：——
• Thermal synthesis and pyrolysis of a xylan
  作者：Glenn R. Ponder、Geoffrey N. Richards

  DOI：10.1016/0008-6215(91)84093-t

  日期：1991.9

  A xylan has been synthesized in yields up to 64% by thermal polymerization of methyl beta-D-xylopyranoside, catalyzed by phosphoric acid. The polymer is highly branched, with d.p. approximately 20. The xylose units in the polymer are predominantly pyranose, with some furanose, and 14% of the nonreducing end groups are in the furanose form. The ''reducing'' end groups are at least partly in the form of methyl xylosides. Vacuum pyrolysis of the pure synthetic xylan gave a high char yield (48%, compare, for example 5% from pure cellulose), 1,4-anhydro-alpha-D-xylopyranose (5.7%), and 1,5-anhydro-4-deoxypent-1-en-3-ulose (2.4%). The structure of the latter compound was verified by degradation experiments and it was shown to be the compound previously isolated from pyrolysis of natural xylans and incorrectly assigned as 3-hydroxy-2-penteno- 1,5-lactone. This glyculose has considerable importance as a marker compound for xylans in pyrolysis of biomass materials.
• Borsche, Chemische Berichte, 1916, vol. 49, p. 2544
  作者：Borsche

  DOI：——

  日期：——