2-bromo-4-ethyl-4-butyrolactone | 318488-78-7

• 分子结构分类: 有机化合物 - 有机杂环化合物 - 内酯类
• 英文名称: 2-bromo-4-ethyl-4-butyrolactone
• 英文别名: 3-bromo-5-ethyloxolan-2-one, Mixture of diastereomers；3-bromo-5-ethyloxolan-2-one
• CAS: 318488-78-7
• 化学式: C₆H₉BrO₂
• 分子量: 193.04
• InChiKey: LGWUAVWPMYBCTB-UHFFFAOYSA-N

物化性质

• 沸点：
  266.5±33.0 °C(Predicted)
• 密度：
  1.505±0.06 g/cm3(Predicted)

计算性质

• 辛醇/水分配系数(LogP)：
  2
• 重原子数：
  9
• 可旋转键数：
  1
• 环数：
  1.0
• sp3杂化的碳原子比例：
  0.83
• 拓扑面积：
  26.3
• 氢给体数：
  0
• 氢受体数：
  2

反应信息

• 作为产物：
  描述：

  γ-己内酯 在 溴 、 三溴化磷 作用下， 反应 2.0h， 以65%的产率得到2-bromo-4-ethyl-4-butyrolactone
  参考文献：
  名称：

  WO2007/139215

  摘要：

  公开号：

文献信息

• Hair Processing Agent And Method For Permanent Waving Hair
  申请人：Shibuya Akira

  公开号：US20080085251A1

  公开（公告）日：2008-04-10

  Provided are hair processing agents capable of permanent waving hair even at a neutral to weakly acidic pH range that causes less irritation to the skin, and hair processing agents in which an unpleasant odor is masked. Hair processing agents contain at least one compound represented by the formula (2). Hair processing agents contain a compound of the formula (2) and at least one compound (ii) selected from thioglycolic acid, thiolactic acid, cysteine, acetylcysteine, cysteamine, acylcysteamine, salts thereof and ester derivatives thereof. Hair processing agents contain a compound of the formula (2), a surfactant and water, and are emulsified. Hair processing agents contain a compound of the formula (2) and a specific perfume. wherein X is a structure selected from —O—, —S—, —NH— and —NR 1 —; R 1 is an alkyl group of 1 to 6 carbon atoms; Y is an oxygen atom or a sulfur atom; in the formula (1), Z is a divalent organic residue having at least one mercapto group; in the formula (2), R is a divalent organic residue optionally having a mercapto group; and R 2 is a hydrogen atom or an alkyl group of 1 to 6 carbon atoms.

  提供了能够在中性至微酸性pH范围内进行永久性卷发的头发处理剂，其对皮肤刺激较小，并且掩盖了不愉快的气味。头发处理剂包含至少一种由公式（2）表示的化合物。头发处理剂包含公式（2）的化合物和至少一种从巯基乙酸，巯基乳酸，半胱氨酸，乙酰半胱氨酸，半胱氨醇，酰基半胱氨醇，其盐和酯衍生物中选择的化合物（ii）。头发处理剂包含公式（2）的化合物，表面活性剂和水，并且是乳化的。头发处理剂包含公式（2）的化合物和特定香水。其中X是从-O-，-S-，-NH-和-NR1-选择的结构；R1是1到6个碳原子的烷基；Y是氧原子或硫原子；在公式（1）中，Z是具有至少一个巯基的二价有机残基；在公式（2）中，R是二价的有机残基，可选地具有巯基；R2是氢原子或1到6个碳原子的烷基。
• PRODUCTION METHOD OF HETEROCYCLIC MERCAPTO COMPOUND
  申请人：Yorozuya Shinichi

  公开号：US20090171095A1

  公开（公告）日：2009-07-02

  A method of the invention industrially produces heterocyclic mercapto compounds useful as raw materials or intermediates in the synthesis of medicaments or pesticides, or as permanent wave agent, with a high yield and high productivity using easily available starting materials. A heterocyclic mercapto compound represented by Formula (1) (wherein X represents any structure of —O—, —S—, —NH—, and —NR 1 —; R 1 represents any of an alkyl group, alkoxy group and alkoxyalkyl group each having 1 to 6 carbon atoms; Y represents an oxygen atom, a sulfur atom or —NR 2 —; R 2 represents a hydrogen atom or alkyl group having 1 to 6 carbon atoms; and Z 1 represents a divalent organic residue having at least one mercapto group) is produced by reacting a metal sulfide or a metal hydrosulfide with a compound represented by Formula (2) (wherein X and Y are as defined in Formula (1); and Z 2 represents a divalent organic residue having at least one halogen group) in the presence of a solvent at a pH of 7.0 to 11.0.

  本发明提供了一种工业生产杂环硫醇化合物的方法，该化合物可用作合成药物或杀虫剂的原材料或中间体，或用作永久波发剂，使用易得的起始材料高产高效。通过在溶剂存在下，在pH为7.0至11.0的条件下，将金属硫化物或金属氢硫化物与化合物（式2）（其中X和Y如式（1）中定义，Z2表示至少具有一个卤素基团的二价有机残基）反应，从而制备出由式（1）所代表的杂环硫醇化合物（其中X表示-O-，-S-，-NH-和-NR1-的任何结构；R1表示具有1至6个碳原子的烷基，烷氧基和烷氧基烷基中的任何一种；Y表示氧原子，硫原子或-NR2-；R2表示具有1至6个碳原子的氢原子或烷基；Z1表示至少具有一个硫醇基团的二价有机残基）。
• Control of the gene expression in eukaryotic cells
  申请人：Calgene LLC

  公开号：EP1507010A2

  公开（公告）日：2005-02-16

  DNA constructs and other compositions and methods for controlling gene expression in eukaryotic cells and organisms are derived from bacterial quorum sensing systems. One or more cis elements from the lux1 promoter ("lux box") or a functionally similar sequence are incorporated in a eukaryotic promoter. A receptor protein from the LuxR family of transcriptional regulators, upon binding an acylated homoserine lactone (AHL) compound, interacts with the lux box, modulating the activity of the promoter.

  控制真核细胞和生物体内基因表达的DNA构建体和其他组合物及方法源自细菌的法定量感应系统。一个或多个来自lux1启动子（"lux box"）的顺式元件或功能类似的序列被整合到真核启动子中。转录调节器LuxR家族的受体蛋白在与酰化高丝氨酸内酯（AHL）化合物结合后，会与lux盒相互作用，调节启动子的活性。
• Control of gene expression in eukaryotic cells
  申请人：——

  公开号：US20030224483A1

  公开（公告）日：2003-12-04

  DNA constructs and other compositions and methods for controlling gene expression in eukaryotic cells and organisms are derived from bacterial quorum sensing systems. One or more cis elements from the luxI promoter (“lux box”) or a functionally similar sequence are incorporated in a eukaryotic promoter. A receptor protein from the LuxR family of transcriptional regulators, upon binding an acylated homoserine lactone (AHL) compound, interacts with the lux box, modulating the activity of the promoter.

  控制真核细胞和生物体内基因表达的DNA构建体和其他组合物及方法源自细菌的法定量感应系统。一个或多个来自luxI启动子（"lux box"）的顺式元件或功能类似的序列被整合到真核启动子中。转录调节器 LuxR 家族的受体蛋白与酰化高丝氨酸内酯（AHL）化合物结合后，会与 lux 盒相互作用，调节启动子的活性。
• WO2006/68276
  申请人：——

  公开号：——

  公开（公告）日：——