(2R,3S,4S)-3-hydroxy-2-methyl-4-phenylmethoxypentanal | 1027183-72-7

• 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: (2R,3S,4S)-3-hydroxy-2-methyl-4-phenylmethoxypentanal
• CAS: 1027183-72-7
• 化学式: C₁₃H₁₈O₃
• 分子量: 222.284
• InChiKey: AUAMEISDAQNXSM-GVXVVHGQSA-N

计算性质

• 辛醇/水分配系数(LogP)：
  1.4
• 重原子数：
  16
• 可旋转键数：
  6
• 环数：
  1.0
• sp3杂化的碳原子比例：
  0.46
• 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：

  (2R,3S,4S)-3-hydroxy-2-methyl-4-phenylmethoxypentanal 在 sodium tetrahydroborate 、 4-甲基苯磺酸吡啶 作用下， 以 甲醇 为溶剂， 反应 0.17h， 生成 (2S,3S,4R)-2-methyl-4-(benzyloxy)-1,3-(isopropylidenedioxy)pentane
  参考文献：
  名称：

  Synthesis of enantioenriched homopropargylic alcohols through diastereoselective SE' additions of chiral allenylstannanes to aldehydes

  摘要：

  Allenylstannanes (S)-4 and (R)-4, available in ca. 90% ee from alkynones 1 through reduction with the LiAlH4-Darvon alcohol or -ent-Darvon alcohol complex, followed by S(N)2' displacement on the derived mesylates (R)-3 or (S)-3 with Bu3SnLi.CuBr.Me2S, readily add to various aldehydes under Lewis acid catalysis to afford optically active homopropargylic alcohols with good to excellent syn diastereoselectivity. With 2-(benzyloxy)propanal (48), MgBr2-catalyzed reactions are highly stereoselective, affording the syn adduct 49 from the (S)-stannane (S)-4 and the anti adduct 52 from the (R)-stannane (R)-4. BF3-promoted additions give mainly or exclusively the syn adducts 49 and 51. Additions of (S)- and (R)-4 to (R)-3-(benzyloxy)-2-methylpropanal (61) yield the syn adducts 62 and 64 as major or exclusive products.

  DOI：

  10.1021/jo00030a036
• 作为产物：
  描述：

  (2S,3S,4S)-(+)-2-benzyloxy-4-methyl-7-acetoxy-5-heptyn-3-ol 在 Lindlar's catalyst 二甲基硫 、 氢气 、 臭氧 作用下， 以 苯 为溶剂， 反应 1.17h， 生成 (2R,3S,4S)-3-hydroxy-2-methyl-4-phenylmethoxypentanal
  参考文献：
  名称：

  Synthesis of enantioenriched homopropargylic alcohols through diastereoselective SE' additions of chiral allenylstannanes to aldehydes

  摘要：

  Allenylstannanes (S)-4 and (R)-4, available in ca. 90% ee from alkynones 1 through reduction with the LiAlH4-Darvon alcohol or -ent-Darvon alcohol complex, followed by S(N)2' displacement on the derived mesylates (R)-3 or (S)-3 with Bu3SnLi.CuBr.Me2S, readily add to various aldehydes under Lewis acid catalysis to afford optically active homopropargylic alcohols with good to excellent syn diastereoselectivity. With 2-(benzyloxy)propanal (48), MgBr2-catalyzed reactions are highly stereoselective, affording the syn adduct 49 from the (S)-stannane (S)-4 and the anti adduct 52 from the (R)-stannane (R)-4. BF3-promoted additions give mainly or exclusively the syn adducts 49 and 51. Additions of (S)- and (R)-4 to (R)-3-(benzyloxy)-2-methylpropanal (61) yield the syn adducts 62 and 64 as major or exclusive products.

  DOI：

  10.1021/jo00030a036

文献信息

• Synthesis of enantioenriched homopropargylic alcohols through diastereoselective SE' additions of chiral allenylstannanes to aldehydes
  作者：James A. Marshall、Xiao Jun Wang

  DOI：10.1021/jo00030a036

  日期：1992.2

  Allenylstannanes (S)-4 and (R)-4, available in ca. 90% ee from alkynones 1 through reduction with the LiAlH4-Darvon alcohol or -ent-Darvon alcohol complex, followed by S(N)2' displacement on the derived mesylates (R)-3 or (S)-3 with Bu3SnLi.CuBr.Me2S, readily add to various aldehydes under Lewis acid catalysis to afford optically active homopropargylic alcohols with good to excellent syn diastereoselectivity. With 2-(benzyloxy)propanal (48), MgBr2-catalyzed reactions are highly stereoselective, affording the syn adduct 49 from the (S)-stannane (S)-4 and the anti adduct 52 from the (R)-stannane (R)-4. BF3-promoted additions give mainly or exclusively the syn adducts 49 and 51. Additions of (S)- and (R)-4 to (R)-3-(benzyloxy)-2-methylpropanal (61) yield the syn adducts 62 and 64 as major or exclusive products.