2-methyl-2-[(E)-5-oxo-5-phenylpent-3-enyl]cyclopentane-1,3-dione | 690660-56-1

• 分子结构分类: 有机化合物 - 苯类化合物 - 苯和取代衍生物
• 英文名称: 2-methyl-2-[(E)-5-oxo-5-phenylpent-3-enyl]cyclopentane-1,3-dione
• CAS: 690660-56-1
• 化学式: C₁₇H₁₈O₃
• 分子量: 270.328
• InChiKey: SJEAOSATUYSHEA-WEVVVXLNSA-N

计算性质

• 辛醇/水分配系数(LogP)：
  2.5
• 重原子数：
  20
• 可旋转键数：
  5
• 环数：
  2.0
• sp3杂化的碳原子比例：
  0.35
• 拓扑面积：
  51.2
• 氢给体数：
  0
• 氢受体数：
  3

反应信息

• 作为反应物：
  描述：

  2-methyl-2-[(E)-5-oxo-5-phenylpent-3-enyl]cyclopentane-1,3-dione 在 bis(1,5-cyclooctadiene)rhodium(I) trifluoromethanesulfonate 氢气 、 potassium carbonate 、 三苯基膦 作用下， 以 1,2-二氯乙烷 为溶剂， 25.0 ℃ 、101.32 kPa 条件下， 以86%的产率得到(3aS,4S,7aS)-4-Benzoyl-3a-hydroxy-7a-methyl-octahydro-inden-1-one
  参考文献：
  名称：

  Enolate Generation under Hydrogenation Conditions:  Catalytic Aldol Cycloreduction of Keto-Enones

  摘要：

  [GRAPHIC]Formal heterolytic activation of elemental hydrogen under Rh catalysis enables the reductive generation of enolates from enones under hydrogenation conditions. Enolates generated in this fashion participate in catalytic C-C bond formation via carbonyl addition to aldehyde and, as demonstrated in this account, ketone partners. Notably, the use of appendant dione partners enables diastereoselective formation of cycloaidol products possessing 3-stereogenic centers, including 2-contiguous quaternary centers.

  DOI：

  10.1021/ol0300219
• 作为产物：
  描述：

  2-甲基-1,3-环戊二酮 以 氯仿 、 水 为溶剂， 反应 38.0h， 生成 2-methyl-2-[(E)-5-oxo-5-phenylpent-3-enyl]cyclopentane-1,3-dione
  参考文献：
  名称：

  Enolate Generation under Hydrogenation Conditions:  Catalytic Aldol Cycloreduction of Keto-Enones

  摘要：

  [GRAPHIC]Formal heterolytic activation of elemental hydrogen under Rh catalysis enables the reductive generation of enolates from enones under hydrogenation conditions. Enolates generated in this fashion participate in catalytic C-C bond formation via carbonyl addition to aldehyde and, as demonstrated in this account, ketone partners. Notably, the use of appendant dione partners enables diastereoselective formation of cycloaidol products possessing 3-stereogenic centers, including 2-contiguous quaternary centers.

  DOI：

  10.1021/ol0300219

文献信息

• Enantioselective Copper(I)-Catalyzed Borylative Aldol Cyclizations of Enone Diones
  作者：Alan R. Burns、Jorge Solana González、Hon Wai Lam

  DOI：10.1002/anie.201205899

  日期：2012.10.22

  Piña colato? In the presence of a chiral CuI/bisphosphine complex and B2(pin)2, enone diones undergo diastereo‐ and enantioselective desymmetrization to deliver highly functionalized bicyclic products. The products can be used as substrates in additional transformations. pin=pinacolato, Cy=cyclohexyl.

  Piñacolato？在存在手性Cu I /双膦配合物和B 2（pin）2的情况下，烯酮二酮会经历非对映异构和对映选择性去对称化，从而提供高度官能化的双环产物。该产品可用作其他转化的底物。销＝松果醇，Cy ＝环己基。
• Copper-Catalyzed Tandem Conjugate Addition−Electrophilic Trapping:  Ketones, Esters, and Nitriles as Terminal Electrophiles
  作者：Kyriacos Agapiou、David F. Cauble、Michael J. Krische

  DOI：10.1021/ja030603l

  日期：2004.4.1

  Exposure of enone substrates 1a-18a, which possess appendant ketone, ester, and nitrile moieties, to Et2Zn in the presence of catalytic Cu(OTf)2/P(OEt)3 provides the cyclized products in good to excellent yields and diastereoselectivities. These results represent the first use of ketones, esters, and nitriles as terminal electrophiles in Cu-catalyzed conjugate addition-electrophilic trapping.