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2-甲氧基-1-甲基-2-氧代乙基丁酸酯 | 96619-87-3

中文名称
2-甲氧基-1-甲基-2-氧代乙基丁酸酯
中文别名
——
英文名称
methyl 2-butyroxypropionate
英文别名
2-butyryloxy-propionic acid methyl ester;2-Butyryloxy-propionsaeure-methylester;2-methoxy-1-methyl-2-oxoethyl butyrate;(1-methoxy-1-oxopropan-2-yl) butanoate
2-甲氧基-1-甲基-2-氧代乙基丁酸酯化学式
CAS
96619-87-3
化学式
C8H14O4
mdl
——
分子量
174.197
InChiKey
YKJAHVZTCFGXAH-UHFFFAOYSA-N
BEILSTEIN
——
EINECS
——
  • 物化性质
  • 计算性质
  • ADMET
  • 安全信息
  • SDS
  • 制备方法与用途
  • 上下游信息
  • 反应信息
  • 文献信息
  • 表征谱图
  • 同类化合物
  • 相关功能分类
  • 相关结构分类

计算性质

  • 辛醇/水分配系数(LogP):
    1.3
  • 重原子数:
    12
  • 可旋转键数:
    6
  • 环数:
    0.0
  • sp3杂化的碳原子比例:
    0.75
  • 拓扑面积:
    52.6
  • 氢给体数:
    0
  • 氢受体数:
    4

SDS

SDS:2960d15c72798475929d881467f3b052
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反应信息

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文献信息

  • Hydrocarbonylation of Enol Esters Catalyzed by a Palladium(II) Complex
    作者:Kiyoshi Kudo、Yuji Oida、Koichi Mitsuhashi、Sadayuki Mori、Koichi Komatsu、Nobuyuki Sugita
    DOI:10.1246/bcsj.69.1337
    日期:1996.5
    The palladium(II)-catalyzed carbonylation of various enol esters in the presence of methanol under pressurized carbon monoxide was investigated. As typical results, the carbonylation of isopropenyl acetate afforded a cyclocarbonylation product, 2-methoxy-2,5,5-trimethyl-1,3-dioxolan-4-one, in 46% yield under carbon monoxide of 150 atm at 100 °C, whereas vinyl acetate selectively gave an α-hydroesterification product, methyl 2-acetoxypropionate, in 56% yield under 250 atm at 100 °C. On the contrary, the reaction of 3,3-dimethyl-1-buten-2-yl acetate gave exclusively a β-hydroesterification product, methyl 3-acetoxy-4,4-dimethylpentanoate, in 64% yield. The yields of these products show a maximum as a function of the base/palladium ratio and of the carbon monoxide pressure. The effects of the reaction variables, such as the MeOH/substrate ratio, the structure of the base, the base/Pd ratio, the CO pressure, and the reaction temperature, were examined for optimizing the process. The mechanisms for the unique cyclocarbonylation and highly regioselective hydrocarbonylation of enol esters involving hydridopalladium(II) intermediate are discussed.
    研究了在加压一氧化碳和甲醇存在下,钯(II)催化的各种烯醇酯的羰基化反应。作为典型结果,在150大气压、100°C的条件下,异丙烯基乙酸酯的羰基化反应得到了环状羰基化产物,2-甲氧基-2,5,5-三甲基-1,3-二氧杂环己烷-4-酮,产率为46%;而乙烯基乙酸酯在250大气压、100°C的条件下,选择性地得到了α-羟基酯化产物,乙酸甲酯-2-乙酰氧基丙酸酯,产率为56%。相反,3,3-二甲基-1-丁烯-2-基乙酸酯反应得到了唯一的β-羟基酯化产物,乙酸甲酯-3-乙酰氧基-4,4-二甲基戊酸酯,产率为64%。这些产物的产率作为碱/钯比的函数和一氧化碳压力的函数达到最大值。为了优化过程,考察了反应变量,如甲醇/底物比、碱的结构、碱/钯比、一氧化碳压力和反应温度等的影响。讨论了含氢钯(II)中间体参与的烯醇酯独特环羰基化和高度区域选择性羟基羰基化的机理。
  • PROCESSES FOR PREPARING ALPHA-NECRODYL COMPOUNDS AND PROCESSES FOR PREPARING GAMMA-NECRODYL COMPOUNDS
    申请人:Shin-Etsu Chemical Co., Ltd.
    公开号:EP3943474A1
    公开(公告)日:2022-01-26
    The present invention provides processes for preparing an α-necrodyl compound of the following general formula (3): wherein R2 represents a monovalent hydrocarbon group having 1 to 9 carbon atoms, the process comprising: subjecting a 3, 5, 5-trimethyl-3-cyclopentene compound of the following general formula (1): wherein R2 is as defined above, and X represents a leaving group, to a nucleophilic substitution reaction with a methylating agent of the following general formula (2): wherein M represents Li, MgZ1, ZnZ1, Cu, CuZ1, or CuLiZ1, and Z1 represents a halogen atom or a methyl group, to form the α-necrodyl compound (3). The present invention further provides processes for preparing γ-necrodyl compounds of the following general formula (4): wherein R2 represents a monovalent hydrocarbon group having 1 to 9 carbon atoms, the process comprising: subjecting the α-necrodyl compound (3) thus obtained to a positional isomerization reaction at the double bond to form the γ-necrodyl compound (4).
    本发明提供了制备以下通式(3)的α-癸基化合物的工艺: 其中 R2 代表具有 1 至 9 个碳原子的一价烃基,该工艺包括:将以下通式(1)的 3,5,5-三甲基-3-环戊烯化合物:其中 R2 如上定义,且 X 代表离去基团,与下式通式(2)的甲基化剂进行亲核取代反应: 其中 M 代表 Li、MgZ1、ZnZ1、Cu、CuZ1 或 CuLiZ1,且 Z1 代表卤原子或甲基,以形成 α-十一烷基化合物(3)。本发明进一步提供了制备以下通式(4)的γ-癸二基化合物的工艺: 其中 R2 代表具有 1 至 9 个碳原子的一价烃基,该工艺包括:将由此获得的 α-癸二基化合物(3)在双键处进行位置异构化反应,以形成γ-癸二基化合物 (4)。
  • DE824041
    申请人:——
    公开号:——
    公开(公告)日:——
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