| 143215-12-7

• CAS: 143215-12-7
• 化学式: C₅₄H₆₆N₂O₂P₂Rh₂S₂
• 分子量: 1107.02
• InChiKey: YMXNZISCOZUWFK-UHFFFAOYSA-N

计算性质

• 辛醇/水分配系数(LogP)：
  None
• 重原子数：
  None
• 可旋转键数：
  None
• 环数：
  None
• sp3杂化的碳原子比例：
  None
• 拓扑面积：
  None
• 氢给体数：
  None
• 氢受体数：
  None

反应信息

• 作为产物：
  描述：

  3-(二甲基氨基)-1-丙硫醇 在 K(OC(CH₃)3) 、 CO 作用下， 以 甲醇 为溶剂， 生成
  参考文献：
  名称：

  Regioselective hydroformylation of cyclic vinyl and allyl ethers with rhodium catalysts. Crucial influence of the size of the phosphorus cocatalyst

  摘要：

  In the course of studies aimed at developing new catalytic systems, we have explored the possibilities offered by the modification of thiolato bridges in dinuclear rhodium complexes, together with the influence of the cocatalyst, on the selective hydroformylation of cyclic vinyl and allyl ethers. The dinuclear complex [Rh2(mu-S(CH2)3NMe2)2(cod)2] (Cod = 1,5-cyclooctadiene) has been prepared, and its reactivity with CO, phosphines, and phosphites has been investigated. The complex crystallizes m the monoclinic space group C2/c with Z = 8, a = 22.543 (4) angstrom, b = 12.040 (2) angstrom, c = 21.547 (3) angstrom, and beta = 98.77 (1)-degrees. For the determination of the structure 4091 unique reflections were used, and the final refinement gave R = 4.1% and R(w) = 4A%. The molecular structure reveals that the two rhodium atoms are bridged by the two thiolato ligands, and the cyclooctadiene completes the coordination of the metal atoms. The amine groups are not bonded to the rhodium. The dinuclear complex has been used in the hydroformylation of 2,3-dihydrofuran, 2,5-dihydrofuran, 3,4-dihydro-2H-pyran, and 3,6-dihydro-2H-pyran. Hydroformylation reactions of dihydrofurans required conditions milder than those for dihydropyrans. The major product in the hydroformylation of 3,4-dihydro-2H-pyran or 3,6-dihydro-2H-pyran was tetrahydropyran-2-carbaldehyde. A systematic study of the influence of the reaction parameters on the selectivity of the hydroformylation of 2,3-dihydrofuran and 2,5-dihydrofuran was undertaken. The study allowed the rationalization of the observed selectivity and the optimization of the yields and regioselectivities. Thus, by modification of the reaction parameters, tetrahydrofuran-3-carbaldehyde was obtained in quantitative yields from 2,5-dihydrofuran and tetrahydrofuran-2-carbaldehyde can be prepared from either 2,3-dihydrofuran or 2,5-dihydrofuran in approximately 75% yield.

  DOI：

  10.1021/om00059a015