3-phenyl-2,4a-dihydro-1H-fluoren-4-yl acetate | 1435517-73-9

• 分子结构分类: 有机化合物 - 苯类化合物
• 英文名称: 3-phenyl-2,4a-dihydro-1H-fluoren-4-yl acetate
• 英文别名: (3-phenyl-2,4a-dihydro-1H-fluoren-4-yl) acetate
• CAS: 1435517-73-9
• 化学式: C₂₁H₁₈O₂
• 分子量: 302.373
• InChiKey: IKQXZFJCWBZUAK-UHFFFAOYSA-N

计算性质

• 辛醇/水分配系数(LogP)：
  3.8
• 重原子数：
  23
• 可旋转键数：
  3
• 环数：
  4.0
• sp3杂化的碳原子比例：
  0.19
• 拓扑面积：
  26.3
• 氢给体数：
  0
• 氢受体数：
  2

反应信息

• 作为产物：
  描述：

  3,7-diphenylhepta-1,6-diyn-3-yl acetate 在 (acetonitrile)[(2',4',6'-triisopropyl-3,4,5,6-tetramethyl-1,1'-biphenyl-2-yl)di-tert-butylphosphine]gold(I) hexafluoroantimonate 作用下， 以 二氯甲烷 为溶剂， 反应 2.0h， 以71%的产率得到3-phenyl-2,4a-dihydro-1H-fluoren-4-yl acetate
  参考文献：
  名称：

  Gold-Catalyzed Cycloisomerization of 1,6-Diyne Carbonates and Esters to 2,4a-Dihydro-1H-fluorenes

  摘要：

  A synthetic method to prepare 2,4a-dihydro-1H-fluorenes efficiently from gold(I)-catalyzed 1,2-acyloxy migration/cyclopropenation/Nazarov cyclization of 1,6-diyne carbonates and esters is described. The suggested reaction pathway provides rare examples of [2,3]-sigmatropic rearrangement in this class of compounds as well as the involvement of an in situ formed cyclopropene intermediate in gold catalysis. Experimental and ONIOM(QM:QM') [our own n-layered integrated molecular orbital and molecular mechanics(quantum mechanics quantum mechanics')] computational studies based on the proposed Au carbenoid species provide insight into this unique selectivity.

  DOI：

  10.1021/ja4032727