6-(2-butyl)-4-hydroxy-2-pyrone | 223435-20-9

• 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-(2-butyl)-4-hydroxy-2-pyrone
• 英文别名: 6-Butan-2-yl-4-hydroxypyran-2-one
• CAS: 223435-20-9
• 化学式: C₉H₁₂O₃
• 分子量: 168.192
• InChiKey: HQKFBKWZZMZVTL-UHFFFAOYSA-N

物化性质

• 沸点：
  272.2±40.0 °C(Predicted)
• 密度：
  1.183±0.06 g/cm3(Predicted)

计算性质

• 辛醇/水分配系数(LogP)：
  1.6
• 重原子数：
  12
• 可旋转键数：
  2
• 环数：
  1.0
• sp3杂化的碳原子比例：
  0.44
• 拓扑面积：
  46.5
• 氢给体数：
  1
• 氢受体数：
  3

反应信息

• 作为反应物：
  描述：

  6-(2-butyl)-4-hydroxy-2-pyrone 在 三乙基硅烷 、 4-二甲氨基吡啶 、 lithium perchlorate 、 三乙胺 、 N,N'-二环己基碳二亚胺 作用下， 以 二氯甲烷 、 三氟乙酸 为溶剂， 反应 10.0h， 生成 6-丁烷-2-基-3-乙基-2-羟基吡喃-4-酮
  参考文献：
  名称：

  A new approach to the synthesis of 3,6- and 5,6-dialkyl derivatives of 4-hydroxy-2-pyrone. Synthesis of rac-germicidin

  摘要：

  A new approach to the synthesis of 3,6- and 5,6-dialkyl-4-hydroxy-2-pyrones has been developed. The method includes the formation of acylated Meldrum's acids (5-(2-alkyl-3-oxoacyl)-2,2-dimethyl-1,3-dioxane-4,6-diones) followed by their thermal transformation. Introduction of 3-alkyl substituents was accomplished by acylation of 4-hydroxy-2-pyrones and ionic hydrogenation of the 3-acyl derivatives obtained. The effectiveness of this new approach has been demonstrated in the synthesis of rac-germicidin, an autoregulative germination inhibitor of Streptomyces viridochromogenes NRRL B-1551. (C) 1999 Elsevier Science Ltd. All rights reserved.

  DOI：

  10.1016/s0040-4020(99)00150-7
• 作为产物：
  描述：

  2,2-dimethyl-5-(4-methyl-3-oxohexanoyl)-1,3-dioxane-4,6-dione 以 甲苯 为溶剂， 以82%的产率得到6-(2-butyl)-4-hydroxy-2-pyrone
  参考文献：
  名称：

  A new approach to the synthesis of 3,6- and 5,6-dialkyl derivatives of 4-hydroxy-2-pyrone. Synthesis of rac-germicidin

  摘要：

  A new approach to the synthesis of 3,6- and 5,6-dialkyl-4-hydroxy-2-pyrones has been developed. The method includes the formation of acylated Meldrum's acids (5-(2-alkyl-3-oxoacyl)-2,2-dimethyl-1,3-dioxane-4,6-diones) followed by their thermal transformation. Introduction of 3-alkyl substituents was accomplished by acylation of 4-hydroxy-2-pyrones and ionic hydrogenation of the 3-acyl derivatives obtained. The effectiveness of this new approach has been demonstrated in the synthesis of rac-germicidin, an autoregulative germination inhibitor of Streptomyces viridochromogenes NRRL B-1551. (C) 1999 Elsevier Science Ltd. All rights reserved.

  DOI：

  10.1016/s0040-4020(99)00150-7

文献信息

• AMINOMETHYLENE DERIVATIVES AND ULTRAVIOLET ABSORBER COMPRISING THE SAME
  申请人：CHEMIPRO KASEI KAISHA, LIMITED

  公开号：EP0950655A1

  公开（公告）日：1999-10-20

  The present invention provides an aminomethylene derivative represented by general formula (I): wherein A is a cyclic oxo group selected from the group consisting of following general formulae (a), (b), (c), (d) and (e): wherein R1, R2, R3, R4 and R5 each independently represent H, an alkyl group or the like; R6, R7 and R8 each independently represent an alkyl group or the like; R1 and R2 or R7 and R8 may combine with each other to form a tetramethylene group or the like; R represents an alkyl group optionally containing OH or O; and n is an integer of 0 to 4, a process for the same, and the use thereof. The derivatives have an excellent ultraviolet absorption ability and a high optical stability.

  本发明提供一种由通式(I)表示的亚氨基亚甲基衍生物： 其中 A 是选自以下通式（a）、（b）、（c）、（d）和（e）所组成的组的环状氧代基团： 其中 R1、R2、R3、R4 和 R5 各自独立地代表 H、烷基或类似基团；R6、R7 和 R8 各自独立地代表烷基或类似基团；R1 和 R2 或 R7 和 R8 可相互结合形成四亚甲基或类似基团；R 代表任选含有 OH 或 O 的烷基；n 为 0 至 4 的整数。这些衍生物具有出色的紫外线吸收能力和较高的光学稳定性。
• US6114546A
  申请人：——

  公开号：US6114546A

  公开（公告）日：2000-09-05
• [DE] VERWENDUNG VON ZUSAMMENSETZUNGEN ENTHALTEND 4-HYDROXY-2-PYRONE ZUR STABILISIERUNG VON HALOGENHALTIGEN ORGANISCHEN KUNSTSTOFFEN<br/>[EN] USE OF COMPOSITIONS CONTAINING 4-HYDROXY-2-PYRONES FOR STABILISING ORGANIC PLASTICS CONTAINING HALOGEN<br/>[FR] UTILISATION DE COMPOSITIONS CONTENANT DES 4-HYDROXY-2-PYRONES POUR LA STABILISATION DE PLASTIQUES ORGANIQUES HALOGENES
  申请人：COGNIS DEUTSCHLAND GMBH

  公开号：WO2004018552A1

  公开（公告）日：2004-03-04

  Zusammensetzungen enthaltend mindestens ein 4-Hydroxy-2-pyron der Formel (I) worin der Rest R Wasserstoff, einen gegebenenfalls substituierten Alkylrest mit insgesamt 1 bis 18 C-Atomen oder einen gegebenenfalls substituierten Arylrest mit insgesamt 6 bis 24 C-Atomen bedeutet, eignen sich zur Stabilisierung von halogenhaltigen organischen Kunststoffen, insbesondere PVC, gegen thermischen und/oder photochemischen Abbau.