6-ethyl-2-methyl-2,3-dihydro-4H-pyran-4-one | 18781-76-5

• 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-2-methyl-2,3-dihydro-4H-pyran-4-one
• 英文别名: 6-ethyl-2-methyl-2,3-dihydro-pyran-4-one；4H-Pyran-4-one, 6-ethyl-2,3-dihydro-2-methyl-；6-ethyl-2-methyl-2,3-dihydropyran-4-one
• CAS: 18781-76-5
• 化学式: C₈H₁₂O₂
• 分子量: 140.182
• InChiKey: NJADMLYOHSJLKV-UHFFFAOYSA-N

计算性质

• 辛醇/水分配系数(LogP)：
  1.2
• 重原子数：
  10
• 可旋转键数：
  1
• 环数：
  1.0
• sp3杂化的碳原子比例：
  0.62
• 拓扑面积：
  26.3
• 氢给体数：
  0
• 氢受体数：
  2

反应信息

• 作为反应物：
  描述：

  6-ethyl-2-methyl-2,3-dihydro-4H-pyran-4-one 在 sodium ethanolate 作用下， 以 乙醇 为溶剂， 生成 oct-6t-ene-3,5-dione
  参考文献：
  名称：

  Gelin,S.; Gelin,R., Bulletin de la Societe Chimique de France, 1968, p. 288 - 298

  摘要：

  DOI：
• 作为产物：
  描述：

  carbethoxy-1 ethylene dioxy-2 butane 在 titanium(IV) isopropylate 、 硫酸 、 2C₂₀H₂₉O₂^(1-)*Mn⁽²⁺⁾ 作用下， 以 四氢呋喃 、 乙醚 、 二氯甲烷 、 苯 为溶剂， 反应 4.0h， 生成 6-ethyl-2-methyl-2,3-dihydro-4H-pyran-4-one
  参考文献：
  名称：

  A convenient route to 2,6-dialkyl-2,3-dihydro-4H-pyran-4-ones via oxidative cleavage of protected 1-(2-oxoalkyl)-cyclopropanols. Synthesis of (±)-hepialone and its natural congener

  摘要：

  An efficient strategy for the synthesis of 2,6-dialkyl-2,3-dihydro-4H-pyran-4-ones has been developed, the key steps of which are oxidative cleavage of the three-membered rings of 1-(2-oxoalkyl)-cyclopropanols and acid-promoted cyclization of the resulting beta-hydroxyketones. (C) 2011 Elsevier Ltd. All rights reserved.

  DOI：

  10.1016/j.tetlet.2011.07.042

文献信息

• Polyamide-polyether block copolymer
  申请人：Pavlin S. Mark

  公开号：US20060052576A1

  公开（公告）日：2006-03-09

  Copolymers having linked internal polyether blocks and internal polyamide blocks have advantageous physical properties and solvent-gelling abilities. The copolymer may be prepared from a reaction mixture that contains 1,4-cyclohexane dicarboxylic acid (CHDA) and poly(alkyleneoxy) diamine (PAODA). Optionally, the reaction mixture contains no monofunctional compound reactive with either amine or carboxylic acid groups, however some of this monofunctional compound may be present. Dimer diamine and/or dimer acid may be present in the reaction mixture. A copolymer may also be prepared from a reaction mixture containing dimer acid and at least two diamine compound(s) including PAODA and short-chain aliphatic diamine having 2-6 carbons (SDA), wherein: a) the reaction mixture comprises x grams of PAODA and y grams of SDA, and x/(x+y) is 0.8-0.98; b) the reaction mixture weighs z grams, and x/z is at least 0.25; and c) the reaction mixture contains either no co-diacid, or comprises a small amount of co-diacid, wherein, if the reaction mixture comprises a small amount of co-diacid, then acid equivalents from co-diacid contribute less than 25% of the total acid equivalents present in the reaction mixture.

  具有连接的内部聚醚块和内部聚酰胺块的共聚物具有有利的物理性能和溶剂凝胶能力。该共聚物可以从包含1,4-环己烷二甲酸（CHDA）和聚（烷氧基）二胺（PAODA）的反应混合物中制备。可选地，反应混合物不含与胺或羧酸基反应的单官能化合物，但其中一些单官能化合物可能存在。二聚胺和/或二聚酸可以存在于反应混合物中。还可以从包含二聚酸和至少两种二胺化合物（包括PAODA和具有2-6个碳的短链脂肪族二胺（SDA））的反应混合物中制备共聚物，其中：a）反应混合物包含x克PAODA和y克SDA，且x/（x+y）为0.8-0.98；b）反应混合物重z克，且x/z至少为0.25；c）反应混合物不含共二酸，或包含少量共二酸，其中，如果反应混合物包含少量共二酸，则共二酸的酸当量贡献的总酸当量不超过反应混合物中总酸当量的25％。
• POLYAMIDE-POLYETHER BLOCK COPOLYMER
  申请人：Pavlin S. Mark

  公开号：US20070244294A1

  公开（公告）日：2007-10-18

  Copolymers having linked internal polyether blocks and internal polyamide blocks have advantageous physical properties and solvent-gelling abilities. The copolymer may be prepared from a reaction mixture that contains 1,4-cyclohexane dicarboxylic acid (CHDA) and poly(alkyleneoxy) diamine (PAODA). Optionally, the reaction mixture contains no monofunctional compound reactive with either amine or carboxylic acid groups, however some of this monofunctional compound may be present. Dimer diamine and/or dimer acid may be present in the reaction mixture. A copolymer may also be prepared from a reaction mixture containing dimer acid and at least two diamine compound(s) including PAODA and short-chain aliphatic diamine having 2-6 carbons (SDA), wherein: a) the reaction mixture comprises x grams of PAODA and y grams of SDA, and x/(x+y) is 0.8-0.98; b) the reaction mixture weighs z grams, and x/z is at least 0.25; and c) the reaction mixture contains either no co-diacid, or comprises a small amount of co-diacid, wherein, if the reaction mixture comprises a small amount of co-diacid, then acid equivalents from co-diacid contribute less than 25% of the total acid equivalents present in the reaction mixture.

  具有连接的内部聚醚块和内部聚酰胺块的共聚物具有优越的物理性能和溶剂凝胶能力。该共聚物可以从含有1,4-环己烷二羧酸（CHDA）和聚（烷氧基）二胺（PAODA）的反应混合物中制备。可选地，反应混合物不含与胺基或羧酸基反应的单官能化合物，但其中一些单官能化合物可能存在。二聚胺和/或二聚酸可以存在于反应混合物中。共聚物也可以从含有二聚酸和至少两种二胺化合物（包括PAODA和具有2-6个碳的短链脂肪族二胺（SDA））的反应混合物中制备，其中：a）反应混合物包含x克PAODA和y克SDA，且x/（x+y）为0.8-0.98；b）反应混合物重z克，且x/z至少为0.25；c）反应混合物不含共二酸，或包含少量共二酸，其中，如果反应混合物包含少量共二酸，则共二酸的酸当量贡献的总酸当量不超过反应混合物中总酸当量的25％。
• Polyamide-Polyether Block Copolymer
  申请人：Pavlin Mark S.

  公开号：US20090076175A1

  公开（公告）日：2009-03-19

  Copolymers having linked internal polyether blocks and internal polyamide blocks have advantageous physical properties and solvent-gelling abilities. The copolymer may be prepared from a reaction mixture that contains 1,4-cyclohexane dicarboxylic acid (CHDA) and poly(alkyleneoxy) diamine (PAODA). Optionally, the reaction mixture contains no monofunctional compound reactive with either amine or carboxylic acid groups, however some of this monofunctional compound may be present. Dimer diamine and/or dimer acid may be present in the reaction mixture. A copolymer may also be prepared from a reaction mixture containing dimer acid and at least two diamine compound(s) including PAODA and short-chain aliphatic diamine having 2-6 carbons (SDA), wherein: a) the reaction mixture comprises x grams of PAODA and y grams of SDA, and x/(x+y) is 0.8-0.98; b) the reaction mixture weighs z grams, and x/z is at least 0.25; and c) the reaction mixture contains either no co-diacid, or comprises a small amount of co-diacid, wherein, if the reaction mixture comprises a small amount of co-diacid, then acid equivalents from co-diacid contribute less than 25% of the total acid equivalents present in the reaction mixture.

  具有连接内部聚醚块和内部聚酰胺块的共聚物具有优越的物理性能和溶剂凝胶能力。该共聚物可以从包含1,4-环己烷二甲酸（CHDA）和聚（烷氧基）二胺（PAODA）的反应混合物中制备。可选地，反应混合物不含对胺基或羧酸基反应的单官能化合物，但该单官能化合物的一些可能存在。二聚胺和/或二聚酸可以存在于反应混合物中。共聚物也可以从包含二聚酸和至少两种二胺化合物（包括PAODA和具有2-6个碳的短链脂肪族二胺（SDA））的反应混合物中制备，其中：a）反应混合物包含x克PAODA和y克SDA，且x/（x+y）为0.8-0.98；b）反应混合物重z克，且x/z至少为0.25；c）反应混合物不含共二酸，或包含少量共二酸，其中，如果反应混合物包含少量共二酸，则共二酸的酸当量对反应混合物中存在的总酸当量贡献不超过25％。
• Bianchi, Giorgio, Gazzetta Chimica Italiana, 1988, vol. 118, # 10, p. 699 - 702
  作者：Bianchi, Giorgio

  DOI：——

  日期：——
• BIANCHI, GIORGIO, GAZZ. CHIM. ITAL., 118,(1988) N 10, C. 699-701
  作者：BIANCHI, GIORGIO

  DOI：——

  日期：——