2,2-dichloro-3-butylcyclobutanone | 136527-28-1

• 分子结构分类: 有机化合物 - 有机氧化合物
• 英文名称: 2,2-dichloro-3-butylcyclobutanone
• 英文别名: 2,2,-Dichloro-3-n-butylcyclobutanone；3-Butyl-2,2-dichlorcyclobutanon；3-butyl-2,2-dichlorocyclobutane；3-butyl-2,2-dichlorocyclobutan-1-one
• CAS: 136527-28-1
• 化学式: C₈H₁₂Cl₂O
• 分子量: 195.089
• InChiKey: SVNAEJWYFAJFQU-UHFFFAOYSA-N

计算性质

• 辛醇/水分配系数(LogP)：
  3.1
• 重原子数：
  11
• 可旋转键数：
  3
• 环数：
  1.0
• sp3杂化的碳原子比例：
  0.88
• 拓扑面积：
  17.1
• 氢给体数：
  0
• 氢受体数：
  1

反应信息

• 作为反应物：
  描述：

  2,2-dichloro-3-butylcyclobutanone 在 正丁基锂 、 溶剂黄146 、 锌 作用下， 以 四氢呋喃 、 正己烷 为溶剂， 反应 1.75h， 生成 1-Isopropylidene-3-n-butylcyclobutane
  参考文献：
  名称：

  Preparation and Photosensitized Oxidation of Isopropylidenecyclobutanes and -cyclobutenes

  摘要：

  Isopropylidenecyclobutanes 2-5 underwent facile ene reaction with singlet dioxygen, yielding (upon Ph(3)P reduction) the corresponding pairs of epimeric allylic alcohols 9 and 10, 11 and 12, 13 and 14, and 15 and 16, respectively. A combination of spectral evidence and molecular modeling studies were utilized in the structural assignment of the epimers. The data clearly indicate that steric considerations play an important role in determining the face of the ring which O-1(2) approaches. Isopropylidenecyclobutenes 6 and 7 reacted with singlet oxygen more slowly than their monoolefinic analogs, yielding upon reduction allylic alcohols 21b and 22, respectively. Benzo analog 7 also generated a small and solvent-dependent amount of isomeric aldehydes 23 and 24, presumably via a free-radical mechanism. n-Butyl diene 8 underwent rapid photosensitized oxygenation producing allylic alcohol 35 (as the O-1(2) ene product) and dione 37 (the Hock-cleavage product of allylic hydroperoxide 39, formed in turn via a free-radical route) in a 1:9 ratio. Ah initio (STO-3G) calculations confirm that, in their lowest energy conformations, compounds 2-8 are planar with the methylene ring hydrogens displaced ca. 36 degrees from the perpendicular. As a result, only exocyclic ene product is formed, since O-1(2) strongly prefers axial or pseudoaxial allylic hydrogens. These calculations combined with the relative rate data suggest that the initial interaction between the electrophilic O-1(2) and alkylidenecyclobutenes involves both ends of the singlet dioxygen molecule, in which the ''front'' end attacks the reactive exocyclic double bond while the ''back'' end obtains stabilization by interacting with the more electron rich but unreactive endocyclic olefin linkage. Because of this added, and presumably substantial, stabilization, the relative rates within this system are determined in part by the orbital coefficients at the latter olefinic center.

  DOI：

  10.1021/jo00083a019
• 作为产物：
  描述：

  1-己烯 以56%的产率得到
  参考文献：
  名称：

  BESSMERTNYX, A. G.;DONSKAYA, N. A., ZH. ORGAN. XIMII, 27,(1991) N, S. 329-350

  摘要：

  DOI：

文献信息

• New Ring Expansion of Cyclobutanones: Synthesis of Pyrrolinones, ­Pyrrolidines and Pyrroles
  作者：Norbert De Kimpe、Guido Verniest、Stefaan Boterberg、Filip Bombeke、Christian V. Stevens

  DOI：10.1055/s-2004-822900

  日期：——

  2-Dichlorocyclobutanones reacted with various amines to give ring opening leading to 4,4-dichlorobutanamides. These compounds proved to be suitable substrates for the synthesis of 3-pyrrolin-2-ones, 2-pyrrolidinones, pyrrolidines and pyrroles.

  2,2-二氯环丁酮与各种胺反应开环，生成 4,4-二氯丁酰胺。这些化合物被证明是合成 3-吡咯啉-2-酮、2-吡咯烷酮、吡咯烷和吡咯的合适底物。
• Synthesis of Silylated Cyclobutanone and Cyclobutene Derivatives Involving 1,4‐Addition of Zinc‐Based Silicon Nucleophiles
  作者：Ming Cui、Martin Oestreich

  DOI：10.1002/chem.202102993

  日期：2021.11.22

  intermediate metal enolate can be trapped as an enol phosphate and further reacted with Grignard reagents in Kumada cross-coupling reactions. By this, a range of silylated cyclobutanone and cyclobutene derivatives becomes accessible.

  一系列高度取代的环丁烯酮与锌基亲核试剂进行 1,4-加成反应，对于无位阻受体，无需铜催化剂的帮助。中间体金属烯醇化物可以作为烯醇磷酸盐被捕获，并在 Kumada 交叉偶联反应中进一步与格氏试剂反应。由此，可以获得一系列甲硅烷基化环丁酮和环丁烯衍生物。
• Comparing the Stereoselective Biooxidation of Cyclobutanones by Recombinant Strains Expressing Bacterial Baeyer–Villiger Monooxygenases
  作者：Florian Rudroff、Joanna Rydz、Freek H. Ogink、Michael Fink、Marko D. Mihovilovic

  DOI：10.1002/adsc.200700072

  日期：2007.6.4

  cyclobutanone structural motif was investigated using a collection of eight monooxygenases of different bacterial origin. This platform of enzymes is able to perform stereoselective biotransformations on an array of structurally diverse substrates. With several ketone precursors, biooxidations yielded enantiocomplementary butyrolactones as key intermediates for the synthesis of natural products and bioactive compounds

  使用八种不同细菌来源的单加氧酶，研究了具有环丁酮结构图案的代表性手性酮的微生物拜耶-维利格氧化。这种酶平台能够在一系列结构多样的底物上进行立体选择性生物转化。与几种酮前体一起，生物氧化产生对映体互补的丁内酯，作为合成天然产物和生物活性化合物的关键中间体。从头产生手性后，微生物的Baeyer-Villiger氧化作用可在脱对称反应中轻松快速地进入几种化合物类别。
• Visible-Light-Promoted Selenocyanation of Cyclobutanone Oxime Esters Using Potassium Selenocyanate
  作者：Xia Zhao、Liangshuo Ji、Yu Gao、Tengteng Sun、Jiamin Qiao、Ankun Li、Kui Lu

  DOI：10.1021/acs.joc.1c00893

  日期：2021.9.3

  We report the visible-light-promoted selenocyanation of cyclobutanone oxime esters using potassium selenocyanate in the presence of a fac-Ir(ppy)3 catalyst for the first time. Because of the mild conditions employed and use of readily accessible potassium selenocyanate, this method is an effective and green strategy for the synthesis of cyano and selenocyano bifunctional substituted alkanes.

  我们首次报道了在fac -Ir(ppy) 3催化剂存在下使用硒氰酸钾对环丁酮肟酯进行可见光促进的硒氰化。由于采用温和的条件和易于获得的硒氰酸钾，该方法是合成氰基和硒氰基双官能取代烷烃的有效且绿色的策略。
• Iron-Catalyzed C–C Bond Cleavage of Oximes for Direct Coupling of Benzothiazole in Water
  作者：Wuxin Zhou、Yang Long、Haifeng Xiang、Buyi Xu、Xiangge Zhou

  DOI：10.1021/acs.joc.3c00197

  日期：——

  between oxime ester and benzothiazole is described, which involves C–C bond cleavage of oxime ester via a single-electron transfer process. This iron catalytic system performed in water under mild reaction conditions offers a streamlined strategy to the construction of alkyl nitrile substituted benzothiazole derivatives. Application of this strategy for the synthesis of some key important compounds

  描述了肟酯和苯并噻唑之间的 Fe 催化偶联反应，该反应涉及通过单电子转移过程使肟酯的 C-C 键断裂。这种在温和反应条件下在水中进行的铁催化体系为构建烷基腈取代的苯并噻唑衍生物提供了一种简化的策略。还报道了该策略在合成一些关键重要化合物（包括 4-杂环-3-芳基丁酸）中的应用。