6-ethyl-pyran-2,4-dione | 4435-30-7

• 分子结构分类: 有机化合物 - 有机杂环化合物 - 吡喃
• 英文名称: 6-ethyl-pyran-2,4-dione
• 英文别名: 6-Aethyl-pyran-2,4-dion；6-Ethyl-2H-pyran-2,4-(3H)-dion; 2,4-Dioxo-6-ethyl-3,4-dihydro-2H-pyran；6-Ethyl-2,3-dihydropyran-2,4-dione；6-ethylpyran-2,4-dione
• CAS: 4435-30-7
• 化学式: C₇H₈O₃
• 分子量: 140.139
• InChiKey: RUVLELZZCSEORC-UHFFFAOYSA-N

物化性质

• 熔点：
  103.5 °C(Solv: ethanol (64-17-5))
• 沸点：
  267.7±29.0 °C(Predicted)
• 密度：
  1.174±0.06 g/cm3(Predicted)

计算性质

• 辛醇/水分配系数(LogP)：
  0.7
• 重原子数：
  10
• 可旋转键数：
  1
• 环数：
  1.0
• sp3杂化的碳原子比例：
  0.43
• 拓扑面积：
  43.4
• 氢给体数：
  0
• 氢受体数：
  3

反应信息

• 作为反应物：
  描述：

  6-ethyl-pyran-2,4-dione 、 戊酸酐 在 吡啶 作用下， 生成 2H-吡喃-2,4(3H)-二酮,6-乙基-3-(1-羰基戊基)-
  参考文献：
  名称：

  Koegl; Salemink, Recueil des Travaux Chimiques des Pays-Bas, 1952, vol. 71, p. 779,785

  摘要：

  DOI：
• 作为产物：
  描述：

  alkaline earth salt of/the/ methylsulfuric acid 在 硫酸 作用下， 生成 6-ethyl-pyran-2,4-dione
  参考文献：
  名称：

  A New Synthesis of 4-Pyridazones

  摘要：

  DOI：

  10.1021/ja01186a076

文献信息

• Methods for reducing aldehyde emissions in polyurethane foams
  申请人：Dow Global Technologies LLC

  公开号：US11479650B2

  公开（公告）日：2022-10-25

  Polyurethane foams are made by curing a reaction mixture that contains an aromatic polyisocyanate, at least one isocyanate-reactive material having an average functionality of at least 2 and an equivalent weight of at least 200 per isocyanate-reactive group, at least one blowing agent, at least one surfactant and at least one catalyst, at least one cyclic 1,3-diketone compound, at least one aminoalcohol or alkylhydroxylamine and an alkali metal, phosphonium or ammonium sulfite. Foams so produced emit low levels of formaldehyde, acetaldehyde, acrolein and propionaldehyde.

  聚氨酯泡沫塑料是通过固化一种反应混合物制成的，该混合物包含芳香族多异氰酸酯、 至少一种异氰酸酯反应材料（平均官能度至少为 2，每个异氰酸酯反应基团的当量至少为 200）、至少一种发泡剂、至少一种表面活性剂和至少一种催化剂、至少一种环 1,3-二酮化合物、至少一种氨基醇或烷基羟胺以及碱金属、鏻或亚硫酸铵。这样生产出的泡沫释放出的甲醛、乙醛、丙烯醛和丙醛含量很低。
• POLYURETHANES HAVING LOW LEVELS OF ALDEHYDE EMISSIONS
  申请人：Dow Global Technologies LLC

  公开号：US20200031983A1

  公开（公告）日：2020-01-30

  Polyurethane foams are made by curing a reaction mixture that contains an aromatic polyisocyanate, at least one isocyanate-reactive material having an average functionality of at least 2 and an equivalent weight of at least 200 per isocyanate-reactive group, at least one blowing agent, at least one surfactant and at least one catalyst, at least one cyclic 1,3-diketone compound and optionally least one antioxidant. Foams so produced emit low levels of both formaldehyde and acetaldehyde.
• METHODS FOR REDUCING ALDEHYDE EMISSIONS IN POLYURETHANE FOAMS
  申请人：Dow Global Technologies LLC

  公开号：US20210189054A1

  公开（公告）日：2021-06-24

  Polyurethane foams are made by curing a reaction mixture that contains an aromatic polyisocyanate, at least one isocyanate-reactive material having an average functionality of at least 2 and an equivalent weight of at least 200 per isocyanate-reactive group, at least one blowing agent, at least one surfactant and at least one catalyst, at least one cyclic 1,3-diketone and at least one aminoalcohol or alkylhydroxylamine. Foams so produced emit low levels of formaldehyde, acetaldehyde and propionaldehyde.
• US4418142A
  申请人：——

  公开号：US4418142A

  公开（公告）日：1983-11-29