5-chloro-1-pentenylzinc bromide | 145297-73-0

• 分子结构分类: 有机化合物 - 有机1,3-偶极化合物
• 英文名称: 5-chloro-1-pentenylzinc bromide
• CAS: 145297-73-0
• 化学式: C₅H₈BrClZn
• 分子量: 248.866
• InChiKey: GPMROKIDJNYSJQ-UHFFFAOYSA-M

反应信息

• 作为反应物：
  描述：

  二苯基氯化膦 、 5-chloro-1-pentenylzinc bromide 在 dimethyl sulfide borane 作用下， 生成 ((E)-5-Chloro-pent-1-enyl)-diphenyl-phosphane; compound with borane
  参考文献：
  名称：

  用有机金属锌制备多官能膦

  摘要：

  功能化的二有机锌与氯二有机膦的反应以良好的产率提供了多官能的膦。硼氢化/硼锌交换序列特别吸引人，它允许一锅法将官能化的烯烃转化为多官能的膦。从容易获得的手性烯烃（萜烯）开始已经制备了几种新的手性膦，并且已经评估了它们在不对称氢化反应中的效率。

  DOI：

  10.1016/s0957-4166(97)00027-x

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).
• A highly stereoselective olefination of aldehydes using new zinc and zirconium 1,1-bimetallic reagents
  作者：Charles E. Tucker、Paul Knochel

  DOI：10.1021/ja00026a045

  日期：1991.12