tert-Butyl-dimethyl-(5-methyl-furan-3-ylmethoxy)-silane | 153109-78-5

• 分子结构分类: 有机化合物 - 有机杂环化合物 - 杂芳族化合物
• 英文名称: tert-Butyl-dimethyl-(5-methyl-furan-3-ylmethoxy)-silane
• 英文别名: Tert-butyl-dimethyl-[(5-methylfuran-3-yl)methoxy]silane
• CAS: 153109-78-5
• 化学式: C₁₂H₂₂O₂Si
• 分子量: 226.391
• InChiKey: HBINXZLUSBEZCP-UHFFFAOYSA-N

计算性质

• 辛醇/水分配系数(LogP)：
  4.11
• 重原子数：
  15
• 可旋转键数：
  4
• 环数：
  1.0
• sp3杂化的碳原子比例：
  0.67
• 拓扑面积：
  22.4
• 氢给体数：
  0
• 氢受体数：
  2

反应信息

• 作为反应物：
  描述：

  tert-Butyl-dimethyl-(5-methyl-furan-3-ylmethoxy)-silane 在 N-溴代丁二酰亚胺(NBS) 、 正丁基锂 、 barium permanganate 作用下， 以 六甲基磷酰三胺 、 乙二醇二甲醚 、 二氯甲烷 为溶剂， 反应 11.0h， 生成 4-Bromo-2-(tert-butyl-dimethyl-silanyl)-5-methyl-furan-3-carbaldehyde
  参考文献：
  名称：

  通过呋喃的区域选择性锂化和 α-甲硅烷基呋喃的光敏氧化合成四取代丁烯内酯，溴贝克瑞德

  摘要：

  四取代的卤代丁烯内酯溴贝克瑞德的直接合成是通过三取代的α-三烷基甲硅烷基呋喃的光敏氧化来实现的，该三取代的α-三烷基甲硅烷基呋喃是通过区域选择性锂化将所需的取代基引入呋喃环中获得的。

  DOI：

  10.1246/cl.1993.1525
• 作为产物：
  描述：

  2-methyl-4-furaldehyde 在 4-二甲氨基吡啶 、 sodium tetrahydroborate 、 三乙胺 作用下， 以 乙醇 、 二氯甲烷 为溶剂， 反应 0.08h， 生成 tert-Butyl-dimethyl-(5-methyl-furan-3-ylmethoxy)-silane
  参考文献：
  名称：

  通过呋喃的区域选择性锂化和 α-甲硅烷基呋喃的光敏氧化合成四取代丁烯内酯，溴贝克瑞德

  摘要：

  四取代的卤代丁烯内酯溴贝克瑞德的直接合成是通过三取代的α-三烷基甲硅烷基呋喃的光敏氧化来实现的，该三取代的α-三烷基甲硅烷基呋喃是通过区域选择性锂化将所需的取代基引入呋喃环中获得的。

  DOI：

  10.1246/cl.1993.1525

文献信息

• A facile preparation of 2,4-disubstituted furans
  作者：James A. Nieman、Brian A. Keay

  DOI：10.1016/s0040-4039(00)73493-9

  日期：1994.7

  Treatment of 2-(tert-butyldimethylsilyl)-3-(triethylsilyloxymethyl)furan with 1.3 equiv. of n-BuLi (THF, −40°, 3h), followed by the addition of a variety of electrophiles provided 2,3,5-trisubstituted furans, which upon treatment with tetra-n-butylammonium fluoride afforded 2,4-disubstituted furans in moderate to excellent yields.

  用1.3当量处理2-（叔丁基二甲基甲硅烷基）-3-（三乙基甲硅烷基氧甲基）呋喃。取正丁基锂（THF，-40°，3h），然后加入各种亲电试剂，得到2,3,5-三取代的呋喃，用四正丁基氟化铵处理后得到2,4-二取代的呋喃中等至极高的产量。
• Regioselective Preparation of 2,4-, 3,4-, and 2,3,4-Substituted Furan Rings. 2.¹ Regioselective Lithiation of 2-Silylated-3-substituted Furan Rings
  作者：Edward Bures、James A. Nieman、Shuyuan Yu、Patrick G. Spinazzé、Jean-Louis J. Bontront、Ian R. Hunt、Arvi Rauk、Brian A. Keay

  DOI：10.1021/jo971098b

  日期：1997.12.1

  A new method for the preparation of 3,4- and 2,5-disubstituted furan rings is described. A variety of 2-silylated-3-(hydroxymethyl)furans and 2-silylated-3-furoic acids lithiate exclusively at C-4 when treated with 2.2 equivs of BuLi. The resulting dianions were quenched with a variety of electrophiles to provide 2-silylated-3-(hydroxymethyl)-substituted furans and 2-silylated-4-substituted 3-furoic acids in good to excellent yields. Removal of the silyl group (n-Bu4NF) provided a variety of 4-substituted-3-(hydroxymethyl)furans and methyl 4-substituted-3-furoates, respectively. The latter esters were prepared due to difficulties encountered in isolating 4-substituted-3-furoic acids. The site of lithiation was altered by protecting the 3-hydroxyl group with a triethylsilane. Lithiation of 2-silylated-3-(((triethylsilyl)oxy)methyl)furan with 1.2 equivs of BuLi followed by the addition of electrophiles provided 2-silylated-3-(((triethylsilyl)oxy)methyl)-5-substituted furan rings. Subsequent removal of both silyl groups provided 2,4-disubstituted furan rings in moderate to good yields. A rationale is provided to explain why protection of the hydroxyl group at C-3 leads to a change in lithiation from the C-4 to the C-5 position of the furan ring. In addition, an explanation for the observed effect of adding HMPA or LiCl to the solution during the lithiation of 2-(tert-butyldimethylsilyl)-3-(hydroxymethyl)furan is provided.
• Synthesis of Tetrasubstituted Butenolide, Bromobeckerelide, by Regioselective Lithiation of Furan Followed by Photosensitized Oxygenation of α-Silylfuran
  作者：Shigeo Katsumura、Koji Ichikawa、Hajime Mori

  DOI：10.1246/cl.1993.1525

  日期：1993.9

  A straightforward synthesis of a tetrasubstituted halobutenolide, bromobeckerelide, was achieved by photosensitized oxygenation of a trisubstituted α-trialkylsilylfuran which was obtained by the introduction of desired substituents into a furan ring via regioselective lithiation.

  四取代的卤代丁烯内酯溴贝克瑞德的直接合成是通过三取代的α-三烷基甲硅烷基呋喃的光敏氧化来实现的，该三取代的α-三烷基甲硅烷基呋喃是通过区域选择性锂化将所需的取代基引入呋喃环中获得的。