(+)-(R)-5-methyl-5-phenylfuran-2(5H)-one | 52264-92-3

• 分子结构分类: 有机化合物 - 有机杂环化合物 - 二氢呋喃
• 英文名称: (+)-(R)-5-methyl-5-phenylfuran-2(5H)-one
• 英文别名: (R)-5-methyl-5-phenyl-5H-furan-2-one；(5R)-5-methyl-5-phenylfuran-2-one
• CAS: 52264-92-3
• 化学式: C₁₁H₁₀O₂
• 分子量: 174.199
• InChiKey: JNYXOXHKFXEQMJ-LLVKDONJSA-N

计算性质

• 辛醇/水分配系数(LogP)：
  2.1
• 重原子数：
  13
• 可旋转键数：
  1
• 环数：
  2.0
• sp3杂化的碳原子比例：
  0.18
• 拓扑面积：
  26.3
• 氢给体数：
  0
• 氢受体数：
  2

反应信息

• 作为反应物：
  描述：

  (+)-(R)-5-methyl-5-phenylfuran-2(5H)-one 在 lithium aluminium tetrahydride 作用下， 以 四氢呋喃 为溶剂， 反应 3.0h， 以85%的产率得到(R)-4-phenylpentane-1,4-diol
  参考文献：
  名称：

  钯催化的β,γ-不饱和丁烯内酯的对映选择性γ-芳基化

  摘要：

  报道了 Pd 催化的 β，γ-不饱和丁烯内酯的对映选择性 γ-选择性芳基化。P-手性膦配体-AntPhos 对于观察到的高 γ-选择性、优异的对映选择性和良好的产率至关重要。

  DOI：

  10.1002/anie.202202046
• 作为产物：
  描述：

  2-苯基-1,2-环氧丙烷 在 N-溴代丁二酰亚胺(NBS) 、 三氟化硼乙醚 、 O-[(S)-[(2R,4S,5R)-5-ethenyl-1-azabicyclo[2.2.2]octan-2-yl]-quinolin-4-ylmethyl] N-phenylcarbamothioate 、 三乙胺 作用下， 以 四氢呋喃 、 正己烷 、 氯仿 为溶剂， 反应 38.08h， 生成 (+)-(R)-5-methyl-5-phenylfuran-2(5H)-one
  参考文献：
  名称：

  Synthesis of chiral butenolides using amino-thiocarbamate-catalyzed asymmetric bromolactonization

  摘要：

  The asymmetric cyclization of 4,4-disubstituted 3-butenoic acids is studied. Amino-thiocarbamates are used as the catalysts and N-bromosuccinimide is used as the stoichiometric halogen source. The resulting gamma-butanolide products are readily converted into the corresponding gamma-butenolides (up to 58% ee) derivatives in one-pot. (C) 2014 Elsevier Ltd. All rights reserved.

  DOI：

  10.1016/j.tetlet.2014.01.009

文献信息

• Lithiated 4-Isopropyl-3-(methylthiomethyl)-5,5-diphenyloxazolidin-2-one:  A Chiral Formyl Anion Equivalent for Enantioselective Preparations of 1,2-Diols, 2-Amino Alcohols, 2-Hydroxy Esters, and 4-Hydroxy-2-alkenoates
  作者：Christoph Gaul、Kaspar Schärer、Dieter Seebach

  DOI：10.1021/jo0155254

  日期：2001.5.1

  provide 4-hydroxy-2-alkenoates (Scheme 5). The scope and limitations of the new, overall enantioselective transformation are determined, and the readily recovered chiral auxiliary used is compared with oxazolidinones of other substitution patterns (Scheme 7). The configuration of a number of products has been assigned by single-crystal X-ray diffraction (cf. Figure 5). These structures and similarities

  标题中指定的杂环化合物（很容易从商业前体制备）具有一个空间受保护的C == O基团，因此BuLi在环外CH（2）基团上的直接锂化成为可能（3-> Li-3） 。锂化的N，S-乙缩醛衍生物（Li-3）非对映选择性地添加到醛（表2），不对称酮（表3），查尔酮（1,4-加成，方案2）以及N-膦酰基和N-磺酰亚胺类化合物中（表4）。Hg（O（2）CCF（3））（2）在THF /乙腈水溶液中对新形成的OH基的保护（方案3）和/或MeS / OH取代将N，S-乙缩醛转化为半缩醛（- ＞ 20），其又容易裂解成醛，并回收手性助剂（方案1，方案4）。可以分离出这些醛（尤其是那些缺少α-羰基氢的醛），或者通过还原成（选择性保护的）二醇或氨基醇，添加格氏试剂或Li试剂（将二醇提供两个立体异构中心），氧化生成2-羟基酯或烯化生成4-羟基-2-链烯酸酯（方案5）。确定了新的整体对映选择性转化的范围和局限性，并将易
• Indole-Catalyzed Bromolactonization in Lipophilic Solvent: A Solid–Liquid Phase Transfer Approach
  作者：Tao Chen、Thomas Jian Yao Foo、Ying-Yeung Yeung

  DOI：10.1021/acscatal.5b01182

  日期：2015.8.7

  We have developed a novel indole-catalyzed bromolactonization of olefinic acids. The reaction could be conducted in lipophilic solvent through a solid liquid phase transfer mechanism. This catalytic protocol has been applied to the synthesis of base-sensitive bromolactones.
• Albinati, Alberto; Bravo, Pierfrancesco; Ganazzoli, Fabio, Journal of the Chemical Society. Perkin transactions I, 1986, p. 1405 - 1416
  作者：Albinati, Alberto、Bravo, Pierfrancesco、Ganazzoli, Fabio、Resnati, Giuseppe、Viani, Fiorenza

  DOI：——

  日期：——
• Enantiodivergent syntheses of γ-substituted butenolides with tertiary and quaternary asymmetric centers
  作者：Katsufumi Suzuki、Kohei Inomata

  DOI：10.1016/s0040-4039(02)02711-9

  日期：2003.1

  Continuous nucleophilic addition with several organometallic reagents to tricyclic lactone (-)-1 proceeded diastereoselectively. Newly generated tertiary and quaternary asymmetric centers were controlled by the order in which the nucleophilic reagents were added. Using this methodology, enantiodivergent syntheses of several gamma-substituted butenolides with tertiary and quaternary asymmetric centers were established from a single chiral material. (C) 2003 Elsevier Science Ltd. All rights reserved.