(S)-1-(2,2-dimethyl-6-methylidenecyclohexyl)but-3-en-1-one | 166022-27-1

• 分子结构分类: 有机化合物 - 有机氧化合物
• 英文名称: (S)-1-(2,2-dimethyl-6-methylidenecyclohexyl)but-3-en-1-one
• 英文别名: (S)-(+)-1-(2',2'-dimethyl-6'-methylene-1'-cyclohexyl)but-3-en-1-one；1-[(1S)-2,2-dimethyl-6-methylidenecyclohexyl]but-3-en-1-one
• CAS: 166022-27-1
• 化学式: C₁₃H₂₀O
• 分子量: 192.301
• InChiKey: IZGDBFFMSJMXMP-LBPRGKRZSA-N

物化性质

• 沸点：
  260.3±29.0 °C(predicted)
• 密度：
  0.90±0.1 g/cm3(Temp: 20 °C; Press: 760 Torr)(predicted)

计算性质

• 辛醇/水分配系数(LogP)：
  3.51
• 重原子数：
  14.0
• 可旋转键数：
  3.0
• 环数：
  1.0
• sp3杂化的碳原子比例：
  0.62
• 拓扑面积：
  17.07
• 氢给体数：
  0.0
• 氢受体数：
  1.0

反应信息

• 作为反应物：
  描述：

  (S)-1-(2,2-dimethyl-6-methylidenecyclohexyl)but-3-en-1-one 在 1,8-二氮杂双环[5.4.0]十一碳-7-烯 作用下， 以 二氯甲烷 为溶剂， 反应 7.0h， 以90%的产率得到(S)-(E)-1-(2',2'-dimethyl-6'-methylene-1'-cyclohexyl)but-2-en-1-one
  参考文献：
  名称：

  Enantioselective synthesis of both enantiomers of γ-ionone, γ-damascone, karahana lactone and karahana ether

  摘要：

  A straightforward enantioselective synthesis of both enantiomers of the title compounds is described starting from enantiopure methyl (2S,6R)- or (2R,6S)-cis-2-hydroxy-gamma-cyclogeraniate. These versatile building blocks are obtained by biomimetic cyclization of methyl (6S)- or (6R)-(Z)-6,7-epoxy-7-methyl-3-(trimethylsilyl)methyl-2-octenoate, respectively. The chiral information was encoded by a highly regioselective Sharpless asymmetric dihydroxylation of the corresponding diene. (C) 2002 Elsevier Science Ltd. All rights reserved.

  DOI：

  10.1016/s0957-4166(02)00335-x
• 作为产物：
  描述：

  (S)-γ-cyclocitral 在 三氟化硼乙醚 、 戴斯-马丁氧化剂 作用下， 以 二氯甲烷 为溶剂， 反应 2.0h， 生成 (S)-1-(2,2-dimethyl-6-methylidenecyclohexyl)but-3-en-1-one
  参考文献：
  名称：

  Enantioselective synthesis of both enantiomers of γ-ionone, γ-damascone, karahana lactone and karahana ether

  摘要：

  A straightforward enantioselective synthesis of both enantiomers of the title compounds is described starting from enantiopure methyl (2S,6R)- or (2R,6S)-cis-2-hydroxy-gamma-cyclogeraniate. These versatile building blocks are obtained by biomimetic cyclization of methyl (6S)- or (6R)-(Z)-6,7-epoxy-7-methyl-3-(trimethylsilyl)methyl-2-octenoate, respectively. The chiral information was encoded by a highly regioselective Sharpless asymmetric dihydroxylation of the corresponding diene. (C) 2002 Elsevier Science Ltd. All rights reserved.

  DOI：

  10.1016/s0957-4166(02)00335-x

文献信息

• Syntheses of the Enantiomers of ?-Cyclogeranic Acid, ?-Cyclocitral, and ?-Damascone: Enantioselective protonation of enolates
  作者：Charles Fehr、Jos� Galindo

  DOI：10.1002/hlca.19950780303

  日期：1995.5.10

  thiol ester enolate with (−)- or (γ)-N-isopropylephedrine((−)- or (γ)-20) and subsequent hydrolysis of the (R)-and (S)-S-phenyl γ-thiocyclogeranate ((R)- and (S)-24, resp.; 97% ee). The esters (R)- and (S)-24 were also used as precursors of (R)- and (S)-γ-damascone ((R)- and (S)-5, resp.). Alternatively, (S)-5 (75% ee) was obtained by enantioselective protonation of ketone enolate 29 with (−)-N-isopropylephedrine

  通过拆分外消旋物获得（R）-和（S）-γ-环香叶酸（（R）-和（S）-9），并通过化学相关性确定它们的绝对构型。γ-酸（R）和（S）-9分别转化为（R）和（S）-γ-环草酸甲酯（（R）和（S）-6以及（R）） -和（S）-γ-大马士革（（R）-和（S）-5，分别）。更直接地输入到（R）和（S）-9包括硫醇酯烯酸酯与（-）-或（γ）-N-异丙基麻黄碱（（-）-或（γ）-20）的对映选择性质子化，以及随后的（R）和（S）-S-苯基γ-硫代环草酸酯（（R）-和（S）-24，分别为97％ee）。酯（R）-和（S）-24也用作（R）-和（S）-γ-大马甲烯的前体（分别是（R）-和（S）-5）。或者， （通过用（-）- N-异丙基麻黄碱（（-）- 20）对酮烯醇酸酯29进行对映选择性质子化而获得S）-5（75％ee ）。感官评价表明，γ-环香叶酸甲酯和γ-大马可康醇的（S）-对映体明显优于它们的（R）-对映体。
• Enantioselective synthesis of both enantiomers of γ-ionone, γ-damascone, karahana lactone and karahana ether
  作者：Stephen Beszant、Elios Giannini、Giuseppe Zanoni、Giovanni Vidari

  DOI：10.1016/s0957-4166(02)00335-x

  日期：2002.7

  A straightforward enantioselective synthesis of both enantiomers of the title compounds is described starting from enantiopure methyl (2S,6R)- or (2R,6S)-cis-2-hydroxy-gamma-cyclogeraniate. These versatile building blocks are obtained by biomimetic cyclization of methyl (6S)- or (6R)-(Z)-6,7-epoxy-7-methyl-3-(trimethylsilyl)methyl-2-octenoate, respectively. The chiral information was encoded by a highly regioselective Sharpless asymmetric dihydroxylation of the corresponding diene. (C) 2002 Elsevier Science Ltd. All rights reserved.