butanoylethanoic acid butyl ester

• 分子结构分类: 有机化合物 - 有机酸及其衍生物 - 酮酸及其衍生物
• 英文名称: butanoylethanoic acid butyl ester
• 英文别名: butyl butyrylacetate；Butyl butyrylactate；butyl 3-oxohexanoate
• 化学式: C₁₀H₁₈O₃
• 分子量: 186.251
• InChiKey: NNXRFDWZYCXPSP-UHFFFAOYSA-N

计算性质

• 辛醇/水分配系数(LogP)：
  2
• 重原子数：
  13
• 可旋转键数：
  8
• 环数：
  0.0
• sp3杂化的碳原子比例：
  0.8
• 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：

  butanoylethanoic acid butyl ester 、 1,8-二氮杂双环[5.4.0]十一碳-7-烯 、 氰乙酰胺 以 丙醇 为溶剂， 反应 20.0h， 以67%的产率得到
  参考文献：
  名称：

  重新审视 Guareschi-Thorpe 环化——取代的 2,6-二羟基吡啶和 2,6-二氯吡啶的有效合成

  摘要：

  DBU 作为碱是 β-酮酯和 2-氰基乙酰胺的实用改良 Guareschi-Thorpe 环化的关键，以允许以良好到优异的产率合成取代的吡啶酮。在季铵盐的存在下，在标准大气回流条件下，与典型的压力设备相反，吡啶酮的 DBU 盐与 POCl 3 的氯化导致取代的 2,6-二氯吡啶的高产率。

  DOI：

  10.1055/s-0037-1609685

文献信息

• Processes for preparing calanolide a and intermediates thereof
  申请人：——

  公开号：US20040106808A1

  公开（公告）日：2004-06-03

  The present invention provides a production method of Calanolide A according to the following method 1 wherein each symbol is as defined in the specification, as a more convenient and industrially practical method for the synthesis of Calanolide A from an easily available starting material.

  本发明提供了一种Calanolide A的生产方法，根据以下方法1，其中每个符号如规范中定义，作为从易得到的起始材料合成Calanolide A的更方便和工业实用的方法。
• Polyamide acid composition for preparing polyimide and process for preparing polyimide from the same
  申请人：KANEGAFUCHI KAGAKU KOGYO KABUSHIKI KAISHA

  公开号：EP0083690A1

  公开（公告）日：1983-07-20

  A polyamide acid composition for preparing a polyimide which can extend the pot life of the composition comprising a solution of a polyamide acid in an organic solvent, the polyamide acid being a precursor of the polyimide, a dehydrating agent, a catalyst and a pot life extending agent which can lower a rate of conversion of the polyamide acid to the plyimide, and the process for preparing the polyimide from said polyamide acid composition. According to the present invention the pot life can be extremely extended to give the composition an enough flowability for a long time without reducing the excellent properties such as a heat resistance and an electric insulation of the obtained polyimide.

  一种用于制备聚酰亚胺的聚酰胺酸组合物，可延长组合物的固化寿命，该组合物包括聚酰胺酸在有机溶剂中的溶液（聚酰胺酸是聚酰亚胺的前体）、脱水剂、催化剂和可降低聚酰胺酸转化为聚酰亚胺的速率的固化寿命延长剂，以及用上述聚酰胺酸组合物制备聚酰亚胺的工艺。根据本发明，可以极大地延长聚酰亚胺的罐装寿命，使该组合物具有足够长的流动性，而不会降低所得聚酰亚胺的优异性能，如耐热性和电绝缘性。
• Method of preparing a polyamide acid composition for preparing polyimide
  申请人：KANEGAFUCHI KAGAKU KOGYO KABUSHIKI KAISHA

  公开号：EP0114059A2

  公开（公告）日：1984-07-25

  A polyamide acid composition for preparing a polyimide which is improved in the stability in a form of solution and can extend the pot life of the composition comprising a solution of a polyamide acid in an organic solvent, the polyamide acid being a precursor of the polyimide, and an N-substituted heterocyclic compound as a chemical treating agent which can lower a rate of conversion of the polyamide acid to the polyimide. The pot life can be extremely extended to give the composition an enough flowability for a long time without reducing the excellent properties such as a heat resistance of the obtained polyimide.

  一种用于制备聚酰亚胺的聚酰胺酸组合物，该组合物在溶液形式下的稳定性得到改善，并可延长其罐装寿命，该组合物包括聚酰胺酸在有机溶剂中的溶液，聚酰胺酸是聚酰亚胺的前体，以及一种 N-取代杂环化合物作为化学处理剂，可降低聚酰胺酸转化为聚酰亚胺的速率。可以极大地延长罐装寿命，使组合物在长时间内具有足够的流动性，而不会降低所获得的聚酰亚胺的优异性能，如耐热性。
• Polyurethane coating or adhesive compositions and methods of using them
  申请人：ROHM AND HAAS COMPANY

  公开号：EP0102720A1

  公开（公告）日：1984-03-14

  Coating or adhesive composition having extended pot life and short cure time comprises organic polyol, organic polyisocyanate, organo-zinc cure rate catalyst, and one or more of the following compounds: (a) beta-dicarbonyl compounds, (b) alpha-hydroxy ketones, (c) fused aromatic beta-hydroxy ketones, and (d) beta-hydroxy nitrogen-heterocyclic fused aromatics. Also disclosed are methods of preparing such coating or adhesive compositions, cured coatings and adhesives, and articles containing said coating or adhesive.

  具有延长罐装寿命和缩短固化时间的涂料或粘合剂组合物由有机多元醇、有机多异氰酸酯、有机锌固化速率催化剂和下列一种或多种化合物组成： (a) β-二羰基化合物， (b) α-羟基酮、 (d) β-羟基氮杂环融合芳烃。 还公开了制备此类涂层或粘合剂组合物、固化涂层和粘合剂以及含有所述涂层或粘合剂的物品的方法。
• Coating compositions having extented pot life and short cure time
  申请人：ROHM AND HAAS COMPANY

  公开号：EP0882748A2

  公开（公告）日：1998-12-09

  A combination of chemicals suitable for extending pot life and shortening cure time of a pot mix of a thermosetting composition is disclosed. The combination of chemicals includes a catalyst, such as, dibutyl tin dilaurate; carboxylic or sulfonic acid; and an extender compound, such as 2,4 pentanedione. The combination is generally included in a polymeric component of the urethane composition. The extended pot life provides the user with longer open time during which to efficiently apply a coating of the pot mix over a wide variety of substrate surfaces while still producing coatings that cure quickly upon application.

  本发明公开了一种适用于延长热固性组合物的罐装寿命和缩短罐装混合物固化时间的化学品组合。化学品组合包括催化剂，如二月桂酸二丁基锡；羧酸或磺酸；以及扩展剂化合物，如 2,4-戊二酮。这种组合通常包含在聚氨酯组合物的聚合物成分中。延长的罐装寿命为用户提供了更长的开放时间，使其可以在各种基材表面上有效地涂抹罐装混合涂料，同时还能生产出在涂抹后迅速固化的涂料。