乙基锌(II)碘化物 | 32955-11-6

• 分子结构分类: 有机化合物 - 有机硫化合物
• 中文名称: 乙基锌(II)碘化物
• 英文名称: ethylzinc(II) iodide
• 英文别名: methylethylzinc；EtZnI
• CAS: 32955-11-6
• 化学式: C₃H₈Zn
• 分子量: 109.487
• InChiKey: FPAYFBDVIZFSFJ-UHFFFAOYSA-N

计算性质

• 辛醇/水分配系数(LogP)：
  1.56
• 重原子数：
  4.0
• 可旋转键数：
  1.0
• 环数：
  0.0
• sp3杂化的碳原子比例：
  1.0
• 拓扑面积：
  0.0
• 氢给体数：
  0.0
• 氢受体数：
  0.0

反应信息

• 作为反应物：
  描述：

  5-(dodecylthio)-3-phenyl-3,4-dihydro-2H-pyrrole 、 乙基锌(II)碘化物 在 1,1'-双(二苯膦基)二茂铁二氯化钯(II)二氯甲烷复合物 作用下， 以 四氢呋喃 、 甲苯 为溶剂， 反应 0.75h， 以79%的产率得到5-ethyl-3-phenyl-3,4-dihydro-2H-pyrrole
  参考文献：
  名称：

  Palladium-Catalyzed Coupling of N-Heteroaryl Sulfides with Organozinc Reagents

  摘要：

  The palladium-catalyzed cross-coupling of N-heteroaryl sulfides with organozinc reagents was developed. Scope and limitation of the reaction regarding generality of zinc reagents and substrate were also investigated.

  DOI：

  10.3987/com-08-s(f)49
• 作为产物：
  描述：

  Dimethylzinc 、 diethylzinc 以 gaseous matrix 为溶剂， 生成 乙基锌(II)碘化物
  参考文献：
  名称：

  Effects of Ligand Exchange Reactions on the Composition of Cd_1-yZn_yTe Grown by Metalorganic Vapor-Phase Epitaxy

  摘要：

  The metalorganic vapor-phase epitaxy (MOVPE) of cadmium zinc telluride (Cd1-yZnyTe) from dimethylcadmium (DMCd), dimethylzinc (DMZn), diethylzinc (DEZn), and diisopropyltelluride (DIPTe) was studied using on-line infrared spectroscopy to monitor the feed and effluent gases. The film composition was measured by X-ray diffraction. No zinc was incorporated into the film when DMCd and DMZn were used due to the very low reactivity of the latter compound. When DMCd and DEZn are tried, the films were nonuniform with Cd-rich films deposited at the reactor inlet and Zn-rich films deposited near the reactor outlet. This film profile was due to alkyl ligand exchange reactions between the group II precursors in the feed, producing DMZn, methylethylzinc (MEZn), methylethylcadmium (MECd), and diethylcadmium (DECd), The decomposition rates of these precursors vary over a wide range with DECd reacting at a 250 K lower temperature than DMZn. Since the organocadmium compounds were consumed at a much faster rate, CdTe was deposited first, while ZnTe was deposited downstream. The ligand exchange reactions explain why previous workers found it difficult to grow Cd1-yZnyTe alloys of uniform composition by MOVPE.

  DOI：

  10.1021/jp970062k

文献信息

• Demonstration of Promoted Zinc Schlenk Equilibria, their Equilibrium Values and Derived Reactivity
  作者：Alexander J. Blake、Jonathan Shannon、John C. Stephens、Simon Woodward

  DOI：10.1002/chem.200601739

  日期：2007.3.16

  presence of promoted Schlenk equilibria for organozinc halide species has been explicitly demonstrated by 13C NMR studies. Thus, addition of methylaluminoxane (MeAlO)n, MAO, to RZnX (R=Et, Bn, ArCH2, (CH2)3CO2Et; X=Cl, Br) leads to the formation of ZnR2 and ZnX2MAO. For EtZnCl, equilibration of ZnEt2 and ZnX2MAO is rapid at -35 degrees C; a K value of 0.19 M-1 indicates the equilibrium favours ZnEt2

  通过13 C NMR研究已明确证明了有机卤化锌物种存在促进的Schlenk平衡。因此，向RZnX（R ＝ Et，Bn，ArCH 2，（CH 2）3 CO 2 Et； X ＝ Cl，Br）中添加甲基铝氧烷（MeAlO）n，MAO导致形成ZnR 2和ZnX 2 MAO。对于EtZnCl，在-35摄氏度时ZnEt2和ZnX2MAO的平衡迅速；K值为0.19 M-1表示平衡有利于ZnEt2（0.75-3.0当量MAO）。使用RZnX / MAO混合物可实现将铜催化的1,4-加成至2-环己烯酮，但竞争的级联反应（随后的两次Michael加成和分子内的醇醛反应）导致产生新的四环副产物（在结晶学上表征为一种情况）。EtZnCl的活化也可以通过添加ZnMe2来实现，并且通过13C NMR光谱法观察到中间EtZnMe的存在（平衡时，K约为1）。可以实现该系统中的不对称共轭物加成（2-环己烯酮的加成最多可达到ee的92％）。
• A study of methyl and tert-butyl as non migrating groups in the reaction of me(organyl)zinc and t-bu(organyl)zinc with aldehydes
  作者：Eric Laloë、Morris Srebnik

  DOI：10.1016/s0040-4039(00)77253-4

  日期：1994.8

  A series of mixed methyl (organyl) and tert-butyl(organyl)zincs were prepared by reaction of ZnCl2 with Grignard reagents. In the presence of salts t-butyl migrates to a lessor extent than methyl in the reaction with aldehydes. In the absence of salts both groups are comparable. BuZnMe prepared under salt-free conditions adds to benzaldehyde in 82.4 % ee and in 85 % yield, comparable to the reaction with distilled dibutylzinc.