bis(4-carboethoxybutyl)mercury | 145297-62-7

• 分子结构分类: 有机化合物 - 脂质和类脂质分子 - 脂肪酰基
• 英文名称: bis(4-carboethoxybutyl)mercury
• 英文别名: Bis(5-ethoxy-5-oxopentyl)mercury
• CAS: 145297-62-7
• 化学式: C₁₄H₂₆HgO₄
• 分子量: 458.948
• InChiKey: CUJWUVKQAWMTAA-UHFFFAOYSA-N

计算性质

• 辛醇/水分配系数(LogP)：
  3.37
• 重原子数：
  19
• 可旋转键数：
  12
• 环数：
  0.0
• sp3杂化的碳原子比例：
  0.86
• 拓扑面积：
  52.6
• 氢给体数：
  0
• 氢受体数：
  4

反应信息

• 作为产物：
  描述：

  mercury(I) chloride 、 ethyl pentanoate,iodozinc(1+) 以 四氢呋喃 为溶剂， 以87%的产率得到bis(4-carboethoxybutyl)mercury
  参考文献：
  名称：

  Preparation of polyfunctional diorganomercurials and their transmetallation to diorganozincs. Applications to the preparation of optically active secon

  摘要：

  Two new methods of preparation of functionalized diorganomercurials have been developed. The first method involves a substitution reaction of (ICH2)2Hg with zinc-copper reagents FG-RCu(CN)ZnI in THF/DMF at - 60-degrees-C. Functional groups such as an ester, nitrile, ketone, phosphonate, halide, and boronic ester are tolerated in this reaction. The second method involves a reductive transmetallation between polyfunctional organozinc halides and mercurous chloride (Hg2Cl2). This very convenient procedure provides a rapid route to various functionalized diorganomercurials in good yields (61-89% yield). The synthetic utility of these mercury organometallics is demonstrated. Their transmetallation with zinc dust (toluene, 80-degrees-C, 3-5 h) affords dialkylzincs which add enantioselectively to aldehydes in the presence of a catalytic amount (20 mol%) of the norephedrine derivative 13. This transmetallation can also be used to prepare stereoselectively (E)-alkenylzinc halides (> 98% E). Addition of Cl(H)ZrCp2 to (E)-5-chloropentenylzinc bromide in CH2Cl2 (25-degrees-C, 1 min) affords a 1,1-bimetallic of zinc and zirconium Cl(CH2)4CH(ZnBr)ZrCp2(Cl) which reacts stereoselectively with an aldehyde providing the (E)-disubstituted olefin (49% yield; 100% E).

  DOI：

  10.1016/0022-328x(92)88002-z

文献信息

• Preparation of polyfunctional diorganomercurials and their transmetallation to diorganozincs. Applications to the preparation of optically active secon
  作者：Michael J. Rozema、Duddu Rajagopal、Charles E. Tucker、Paul Knochel

  DOI：10.1016/0022-328x(92)88002-z

  日期：1992.10

  Two new methods of preparation of functionalized diorganomercurials have been developed. The first method involves a substitution reaction of (ICH2)2Hg with zinc-copper reagents FG-RCu(CN)ZnI in THF/DMF at - 60-degrees-C. Functional groups such as an ester, nitrile, ketone, phosphonate, halide, and boronic ester are tolerated in this reaction. The second method involves a reductive transmetallation between polyfunctional organozinc halides and mercurous chloride (Hg2Cl2). This very convenient procedure provides a rapid route to various functionalized diorganomercurials in good yields (61-89% yield). The synthetic utility of these mercury organometallics is demonstrated. Their transmetallation with zinc dust (toluene, 80-degrees-C, 3-5 h) affords dialkylzincs which add enantioselectively to aldehydes in the presence of a catalytic amount (20 mol%) of the norephedrine derivative 13. This transmetallation can also be used to prepare stereoselectively (E)-alkenylzinc halides (> 98% E). Addition of Cl(H)ZrCp2 to (E)-5-chloropentenylzinc bromide in CH2Cl2 (25-degrees-C, 1 min) affords a 1,1-bimetallic of zinc and zirconium Cl(CH2)4CH(ZnBr)ZrCp2(Cl) which reacts stereoselectively with an aldehyde providing the (E)-disubstituted olefin (49% yield; 100% E).