(S)-2-((S)-Hydroxy-phenyl-methyl)-butyric acid ethyl ester

• 分子结构分类: 有机化合物 - 有机酸及其衍生物 - 羟基酸及其衍生物
• 英文名称: (S)-2-((S)-Hydroxy-phenyl-methyl)-butyric acid ethyl ester
• 英文别名: ethyl (2S)-2-[(S)-hydroxy(phenyl)methyl]butanoate
• 化学式: C₁₃H₁₈O₃
• 分子量: 222.284
• InChiKey: MCJORAPHPVJYNZ-NWDGAFQWSA-N

计算性质

• 辛醇/水分配系数(LogP)：
  2.2
• 重原子数：
  16
• 可旋转键数：
  6
• 环数：
  1.0
• sp3杂化的碳原子比例：
  0.46
• 拓扑面积：
  46.5
• 氢给体数：
  1
• 氢受体数：
  3

反应信息

• 作为产物：
  描述：

  丁酸乙酯 在 zinc chloride on alumina 、 lithium diisopropyl amide 作用下， 以 四氢呋喃 为溶剂， 反应 4.5h， 生成 (S)-2-((S)-Hydroxy-phenyl-methyl)-butyric acid ethyl ester
  参考文献：
  名称：

  Surface-Mediated Solid Phase Reaction. IX. A Convenient Procedure for Aldol Reaction of Ketene Silyl Acetals with Aldehydes on the Solid Surface of Alumina

  摘要：

  The aldol reaction of ketene silyl acetals with aldehydes proceeds efficiently on the solid surface of alumina impregnated with anhydrous zinc chloride under sonication providing aldol products in high yields and with good stereoselectivity.

  DOI：

  10.1080/00397919708005012

文献信息

• Lewis Base Activation of Lewis Acids:  Catalytic, Enantioselective Addition of Silyl Ketene Acetals to Aldehydes
  作者：Scott E. Denmark、Gregory L. Beutner、Thomas Wynn、Martin D. Eastgate

  DOI：10.1021/ja047339w

  日期：2005.3.1

  The concept of Lewis base activation of Lewis acids has been reduced to practice for catalysis of the aldol reaction of silyl ketene acetals and silyl dienol ethers with aldehydes. The weakly acidic species, silicon tetrachloride (SiCl4), can be activated by binding of a strongly Lewis basic chiral phosphoramide, leading to in situ formation of a chiral Lewis acid. This species has proven to be a competent

  路易斯酸的路易斯碱活化的概念已被简化用于催化甲硅烷基乙烯酮缩醛和甲硅烷基二烯醇醚与醛的羟醛反应。弱酸性物质四氯化硅 (SiCl4) 可以通过结合强路易斯碱性手性磷酰胺而被激活，导致手性路易斯酸的原位形成。该物质已被证明是将乙酸酯、丙酸酯和异丁酸酯衍生的甲硅烷基乙烯酮缩醛与共轭和非共轭醛进行羟醛加成反应的有效催化剂。此外，还证明了甲硅烷基二烯醇醚的乙烯基羟醛反应。高水平的区域-，抗非对映-，
• A NEW METHOD FOR THE SYNTHESIS OF β-HYDROXYESTERS BY USING METALLIC TIN
  作者：Taira Harada、Teruaki Mukaiyama

  DOI：10.1246/cl.1982.161

  日期：1982.2.5

  Metallic tin or activated metallic tin, prepared by reduction of stannous chloride with lithium aluminum hydride, smoothly reacts with α-haloesters to yield tin enolates, which in turn react with carbonyl compounds under mild conditions to give, after hydrolysis, β-hydroxyesters in high yields.

  用氢化铝锂还原氯化亚锡制备的金属锡或活化金属锡，与α-卤代酯平稳反应生成烯醇锡，然后在温和条件下与羰基化合物反应，水解后生成β-羟基酯。产量。
• Enolboration. 6. Dicyclohexyliodoborane, a Versatile Reagent for the Stereoselective Synthesis of Either Z or E Enolates from Representative Esters
  作者：Kumaraperumal Ganesan、Herbert C. Brown

  DOI：10.1021/jo00088a012

  日期：1994.5

  A smooth, rapid, quantitative, and highly stereoselective synthesis of either Z or E enolates from representative esters has been achieved with dicyclohexyliodoborane, Chx(2)BI, in the presence of a suitable tertiary amine, such as triethylamine or N,N-diisopropylethylamine. A systematic investigation of the enolboration of ethyl propionate and ethyl phenylacetate, as model esters, by the various Chx(2)BX and BX-9-BBN reagents (X = OMs, I, and Br) established Chx(2)BI as the preferred reagent in terms of yield and selectivity. Further study of representative esters (RCH(2)-COOR') with Chx(2)BI established that the steric requirements of both the alkyl group (R) at the ct-position and the alkoxy group (OR') play a significant role in controlling the enolate geometry. The steric requirements of the amine (R''N-3) also contribute considerably to the stereoselectivity of the reaction, The present study provides a simple procedure for the synthesis of Z or E enol borinates from representative esters (RCH(2)COOR') using the combined stereodirecting effects of the alkyl (R) and the alkoxy (OR') groups. These enol borinates are highly reactive with aldehydes at temperatures as low as -78 degrees C and are exceptionally stereoselective even at 0 degrees C, In this exploratory study, the synthesis of stereoselective enolates from representative esters (RCH(2)COOR') using Chx(2)BI/R''N-3 is discussed, with special emphasis on the effects of the steric requirements of R and OR' in controlling the enolate geometry.
• Surface-Mediated Solid Phase Reaction. IX. A Convenient Procedure for Aldol Reaction of Ketene Silyl Acetals with Aldehydes on the Solid Surface of Alumina
  作者：Brindaban C. Ranu、Manika Saha、Sanjay Bhar

  DOI：10.1080/00397919708005012

  日期：1997.9

  The aldol reaction of ketene silyl acetals with aldehydes proceeds efficiently on the solid surface of alumina impregnated with anhydrous zinc chloride under sonication providing aldol products in high yields and with good stereoselectivity.