(2S,3S,E)-ethyl 3-hydroxy-2-methyl-5-phenylpent-4-enoate | 86838-36-0

• 分子结构分类: 有机化合物 - 苯丙烷和聚酮 - 肉桂醇
• 英文名称: (2S,3S,E)-ethyl 3-hydroxy-2-methyl-5-phenylpent-4-enoate
• 英文别名: ethyl (E,2S,3S)-3-hydroxy-2-methyl-5-phenylpent-4-enoate
• CAS: 86838-36-0；130931-32-7；130931-33-8；86838-38-2
• 化学式: C₁₄H₁₈O₃
• 分子量: 234.295
• InChiKey: ABILMTYZOJXHJM-DUOIGYQMSA-N

计算性质

• 辛醇/水分配系数(LogP)：
  2.5
• 重原子数：
  17
• 可旋转键数：
  6
• 环数：
  1.0
• sp3杂化的碳原子比例：
  0.36
• 拓扑面积：
  46.5
• 氢给体数：
  1
• 氢受体数：
  3

反应信息

• 作为反应物：
  描述：

  (2S,3S,E)-ethyl 3-hydroxy-2-methyl-5-phenylpent-4-enoate 在 Hoveyda-Blechert second generation catalyst 作用下， 以 1,2-二氯乙烷 为溶剂， 20.0 ℃ 、413.69 kPa 条件下， 反应 12.0h， 以78%的产率得到(2S,3S,E)-ethyl 3-hydroxy-2-methyl-5-phenylpent-4-enoate
  参考文献：
  名称：

  Alkene Metathesis Approach to β-Unsubstituted Anti-Allylic Alcohols and Their Use in Ene–Yne Metathesis

  摘要：

  The synthesis of beta-unsubstituted, anti-allylic alcohols using a catalytic Evans aldol reaction conjoined with a relay-type ring-closing alkene metathesis is reported. The metathesis step serves to remove a beta-alkenyl group, which facilitated the aldol step. The beta-substituted enals serve as acrolein surrogates. The products were employed in ene-yne cross metathesis.

  DOI：

  10.1021/jo202398q
• 作为产物：
  描述：

  (4E)-1-[(4S)-4-benzyl-2-thioxo(1,3-thiazolidin-3-yl)](2S,3S)-3-hydroxy-methyl-5-phenylpent-4-en-1-one 在 4-二甲氨基吡啶 作用下， 以 乙醇 为溶剂， 反应 16.0h， 以87%的产率得到(2S,3S,E)-ethyl 3-hydroxy-2-methyl-5-phenylpent-4-enoate
  参考文献：
  名称：

  Alkene Metathesis Approach to β-Unsubstituted Anti-Allylic Alcohols and Their Use in Ene–Yne Metathesis

  摘要：

  The synthesis of beta-unsubstituted, anti-allylic alcohols using a catalytic Evans aldol reaction conjoined with a relay-type ring-closing alkene metathesis is reported. The metathesis step serves to remove a beta-alkenyl group, which facilitated the aldol step. The beta-substituted enals serve as acrolein surrogates. The products were employed in ene-yne cross metathesis.

  DOI：

  10.1021/jo202398q

文献信息

• A facile preparation of indium enolates and their Reformatsky- and Darzens-type reactions
  作者：Tsunehisa Hirashita、Kenji Kinoshita、Hatsuo Yamamura、Masao Kawai、Shuki Araki

  DOI：10.1039/a907334e

  日期：——

  Indium enolates were readily prepared by transmetalation of lithium enolates with indium trichloride, and were subsequently reacted with aldehydes to give β-hydroxy esters in high yields. Indium α-bromo enolates were also prepared and reacted with carbonyl compounds to give Darzens-type α,β-epoxy carbonyl products.

  铟烯醇盐通过锂烯醇盐与三氯化铟的金属交换反应容易制备，随后与醛反应生成高产率的β-羟基酯。铟α-溴烯醇盐也被制备并与羰基化合物反应，生成Darzens 型α,β-环氧羰基产物。
• Stereoselective reduction of 2-methyl-3-oxo esters (or amides) with sodium borohydride catalyzed by manganese(II) chloride or tetrabutylammonium borohydride. A practical preparation of erythro and threo-3-hydroxy-2-methyl esters (or amides)
  作者：Masahiko Taniguchi、Hideaki Fujii、Koichiro Oshima、Kiitiro Utimoto

  DOI：10.1016/s0040-4020(01)81804-4

  日期：1993.1

  lpropionamides were prepared with high stereoselectivity by NaBH4 reduction of the corresponding 2-methyl-3-oxo esters or 2-methyl-3-oxo amides in the presence of a catalytic amount of manganese(II) chloride. On the other hand, reduction of these substrates with n-Bu4NBH4 provided threo-isomers selectively. erythro-Selective reduction of 2-methyl-3-oxo amides with NaBH3CN in 1N HCl-MeOH is also described

  赤-3-羟基-2- methylpropionates或赤-3-羟基-2-甲基丙酰胺用高立体选择性加入NaBH制备4减少在相应的2-甲基-3-氧代酯或2-甲基-3-氧代酰胺的催化量的氯化锰（II）的存在。另一方面，用n -Bu 4 NBH 4还原这些底物选择性地提供了苏式异构体。还描述了在1N HCl-MeOH中用NaBH 3 CN对2-甲基-3-氧代酰胺的赤型选择性还原。
• Direct synthesis of β^2,3‐amino acid from β‐hydroxycarbamides: Implication in the synthesis of azumamide analogs and conformational analysis
  作者：Afsar Ali Khan、Jayanti Vaishnav、Manoj Kumar Gangwar、Ravi Sankar Ampapathi、Dipankar Koley

  DOI：10.1002/jhet.4717

  日期：2023.11

  The designed β2,3 unnatural amino acids have been synthesized from α-methyl-β-hydroxycarbamides via direct azidation without obtaining eliminated products. Furthermore, these β2,3 amino acids were utilized to synthesize cyclic tetrapeptides (CTPs) as azumamide analogs. 2D-NMR analysis revealed the compact secondary structure as a single conformer. Presence of intramolecular H-bonding in CTPs was observed

  所设计的β 2,3非天然氨基酸是由α-甲基-β-羟基脲通过直接叠氮化合成的，没有获得消除的产物。此外，这些 β2,3氨基酸被用来合成环状四肽（CTP）作为 azumamide 类似物。二维核磁共振分析揭示了紧凑的二级结构为单一构象异构体。在这种 α 3 β 2,3结构中观察到 CTP 中存在分子内氢键，并显示出七元 γ 转角结构。
• Akita, Hiroyuki; Matsukura, Hiroko; Sonomoto, Kenji, Chemical and pharmaceutical bulletin, 1987, vol. 35, # 12, p. 4985 - 4987
  作者：Akita, Hiroyuki、Matsukura, Hiroko、Sonomoto, Kenji、Tanaka, Atsuo、Oishi, Takeshi

  DOI：——

  日期：——
• Alkene Metathesis Approach to β-Unsubstituted <i>Anti</i>-Allylic Alcohols and Their Use in Ene–Yne Metathesis
  作者：Joseph R. Clark、Jonathan M. French、Steven T. Diver

  DOI：10.1021/jo202398q

  日期：2012.2.3

  The synthesis of beta-unsubstituted, anti-allylic alcohols using a catalytic Evans aldol reaction conjoined with a relay-type ring-closing alkene metathesis is reported. The metathesis step serves to remove a beta-alkenyl group, which facilitated the aldol step. The beta-substituted enals serve as acrolein surrogates. The products were employed in ene-yne cross metathesis.