5-(1-Hydroxy-1,1-dimethylmeth-1-yl)-2,3-dihydrofuran | 81925-56-6

• 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: 5-(1-Hydroxy-1,1-dimethylmeth-1-yl)-2,3-dihydrofuran
• 英文别名: 2-(2,3-Dihydrofuran-5-yl)propan-2-ol
• CAS: 81925-56-6
• 化学式: C₇H₁₂O₂
• 分子量: 128.171
• InChiKey: RKDKHFRLJSLLGV-UHFFFAOYSA-N

计算性质

• 辛醇/水分配系数(LogP)：
  0.5
• 重原子数：
  9
• 可旋转键数：
  1
• 环数：
  1.0
• sp3杂化的碳原子比例：
  0.71
• 拓扑面积：
  29.5
• 氢给体数：
  1
• 氢受体数：
  2

反应信息

• 作为反应物：
  描述：

  5-(1-Hydroxy-1,1-dimethylmeth-1-yl)-2,3-dihydrofuran 在 sodium hydroxide 、 三氟甲磺酸 、 三氟甲烷磺酸亚铜(I)苯联合体 (2:1) 、 sodium hydride 作用下， 以 四氢呋喃 、 六甲基磷酰三胺 、 乙醚 为溶剂， 反应 11.75h， 生成 5-(2-Hydroxyethyl)-3-(hydroxymethyl)-2,2-dimethylcyclopentan-1-one
  参考文献：
  名称：

  A Facile Access to Densely Functionalized Substituted Cyclopentanes and Spiro Cyclopentanes. Carbocation Stabilization Directed Bond Migration in Rearrangement of Cyclobutanes

  摘要：

  DOI：

  10.1021/jo970283m
• 作为产物：
  描述：

  2,3-二氢呋喃 、 丙酮 在 叔丁基锂 作用下， 生成 5-(1-Hydroxy-1,1-dimethylmeth-1-yl)-2,3-dihydrofuran
  参考文献：
  名称：

  环状乙烯基醚碳负离子—II：羰基化合物的制备及其应用

  摘要：

  描述了各种环状乙烯基醚的金属化条件以及所得碳负离子与亲电子试剂的反应条件。讨论了乙烯基醚结构对相对金属化速率的影响。介绍了该方法在各种类型羰基化合物的构建中的应用。

  DOI：

  10.1016/s0040-4020(01)93274-0

文献信息

• Synthesis and reactions of .alpha.-methylene-.beta.-keto sulfones
  作者：Andreas Weichert、H. Martin R. Hoffmann

  DOI：10.1021/jo00013a007

  日期：1991.6

  Modified Jones oxidation of 2-(benzenesulfonyl)-2-alken-1-ols and rapid nonnucleophilic workup below 0-degrees-C yields a variety of alpha-methylene-beta-keto sulfones 4, including crystalline parent 4a and also e-h, which can be stored at -20-degrees-C without change. In the absence of nucleophiles, the new compounds are stable (heating in benzene) toward dimerization and polymerization. Thus, selective cross-reactions are feasible. With alcohols, including sterically hindered tertiary alcohols and also with 2-(ethoxycarbonyl)cyclopentanone, the compounds function as efficient Micheal acceptors, even in the absence of base catalysis. In moist ether, 2-(benzenesulfonyl)-1-penten-3-one (4b) suffers rearrangement to 2-(benzenesulfonyl)ethyl propanoate (9). Sulfonylated alcohol 7 and strained alpha-hydroxyoxetane 8 are assumed as intermediates. Toward electron-rich aromatics and heteroaromatics, alpha-methylene-beta-keto sulfones 4 behave as electrophiles in Friedel-Crafts-type functionalizations. The new compounds are also dienophilic: of the two groups (acetyl and benzenesulfonyl) attached to the ethylenic terminus in 4a, benzenesulfonyl has been found to preferentially adopt the endo position in cycloadditions of cyclopentadiene and also cyclohexadiene. Prototype 3-(benzenesulfonyl)-3-buten-2-one (4a) is a crystalline methyl vinyl ketone (MVK) equivalent which, unlike MVK, undergoes controlled free-radical additions with nucleophilic radicals. In hetero-Diels-Alder reactions, 4a serves as a 1-oxa-1,3-butadiene unit, combining with a wide range of alkenes of graded nucleophilicity. Electron deficient 4a also reacts as an enophile toward 1,1-dialkylated ethylenes. In the presence of ZnCl2.OEt2, the ene reaction with beta-piene can be suppressed completely in favor of cycloaddition, giving a robustadial building block in 85% yield. In further applications to natural products chemistry, the synthesis of frontalin and novel oxatricyclics are described.
• Paquette, Leo A.; Lawhorn, David E.; Teleha, Christopher A., Heterocycles, 1990, vol. 30, # 2, p. 765 - 769
  作者：Paquette, Leo A.、Lawhorn, David E.、Teleha, Christopher A.

  DOI：——

  日期：——
• PAQUETTE, LOP A.;LAWHORN, DAVID E.;TELEHA, CHRISTOPHER A., HETEROCYCLES., 30,(1990) N, SPEC. ISSUE , C. 765-769
  作者：PAQUETTE, LOP A.、LAWHORN, DAVID E.、TELEHA, CHRISTOPHER A.

  DOI：——

  日期：——
• WEICHERT, ANDREAS;HOFFMANN, R. H. MARTIN, J. ORG. CHEM., 56,(1991) N3, C. 4098-4112
  作者：WEICHERT, ANDREAS、HOFFMANN, R. H. MARTIN

  DOI：——

  日期：——
• BOECKMAN, R. K. ,, JR;BRUZA, K. J., TETRAHEDRON, 1981, 37, N 23, 3997-4006
  作者：BOECKMAN, R. K. ,, JR、BRUZA, K. J.

  DOI：——

  日期：——