1-phenylspiro[2.5]octane-4,8-dione | 1620143-03-4

• 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: 1-phenylspiro[2.5]octane-4,8-dione
• 英文别名: 2-Phenylspiro[2.5]octane-4,8-dione
• CAS: 1620143-03-4
• 化学式: C₁₄H₁₄O₂
• 分子量: 214.264
• InChiKey: ULJYZHUKVBOPKK-UHFFFAOYSA-N

计算性质

• 辛醇/水分配系数(LogP)：
  1.7
• 重原子数：
  16
• 可旋转键数：
  1
• 环数：
  3.0
• sp3杂化的碳原子比例：
  0.43
• 拓扑面积：
  34.1
• 氢给体数：
  0
• 氢受体数：
  2

反应信息

• 作为反应物：
  描述：

  1-phenylspiro[2.5]octane-4,8-dione 在 咪唑 、 copper(ll) bromide 作用下， 以 四氢呋喃 、 二氯甲烷 、 乙酸乙酯 为溶剂， 反应 8.0h， 生成 1-benzyl-4-tert-butyldimethylsilyloxy-2-phenylindole
  参考文献：
  名称：

  Ring-Opening Cyclization of Cyclohexane-1,3-dione-2-spirocyclopropanes with Amines: Rapid Access to 2-Substituted 4-Hydroxyindole

  摘要：

  An efficient ring-opening cyclization of cyclohexane-1,3-dione-2-spirocyclopropanes with primary amines has been developed. The reaction proceeded at room temperature without any additives to provide 2-substituted tetrahydroindol-4-ones in good to excellent yields without the formation of the 3-substituted isomers. The obtained product was readily converted into a 2-substituted 4-hydroxyindole derivative via a synthetically useful indoline intermediate.

  DOI：

  10.1021/ol501837b
• 作为产物：
  描述：

  1,3-环己二酮 在 dirhodium tetraacetate 、 potassium hydroxide 作用下， 以 二氯甲烷 为溶剂， 反应 0.02h， 生成 1-phenylspiro[2.5]octane-4,8-dione 、 2-phenyl-2,3,6,7-tetrahydrobenzofuran-4(5H)-one
  参考文献：
  名称：

  Metal-Catalyzed Thermal Reactions of Cyclic β-Dicarbonyl Phenyliodonium Ylide with Styrenes

  摘要：

  A cyclic beta-dicarbonyl phenyliodonium ylide reacted with various substituted styrenes under Rh-2(OAc)(4) catalysis to give cyclopropanes and dihydrofurans in a highly regioselective fashion. When styrenes with electron-donating substituents or disubstituted were employed, only dihydrofurans were isolated instead. A mechanism involving two competing pathways rationalizes the results.

  DOI：

  10.1021/jo502611x

文献信息

• Ring-Opening Cyclization of Spirocyclopropanes Using Sulfoxonium Ylides
  作者：Yuta Onuki、Hisanori Nambu、Takayuki Yakura

  DOI：10.1248/cpb.c20-00132

  日期：2020.5.1

  cyclohexane-1,3-dione-2-spirocyclopropanes using dimethylsulfoxonium methylide proceeded regioselectively to produce 2,3,4,6,7,8-hexahydro-5H-1-benzopyran-5-ones in good to high yields. The reactions of cycloheptane- and cyclopentane-1,3-dione-2-spirocyclopropanes could construct [7.6]- and [5.6]-fused ring systems. This reaction was also carried out using sulfoxonium ethylide, butylide, and benzylide

  使用二甲基硫代methyl鎓亚甲基对环己烷-1,3-二酮-2-螺环丙烷进行开环环化反应，选择性地生成2,3,4,6,7,8-六氢-5H-1-苯并吡喃-5-酮产量。环庚烷和环戊烷-1,3-二酮-2-螺环丙烷的反应可以构建[7.6]-和[5.6]稠合的环系统。该反应还使用亚乙基ethyl鎓，丁基化物和苄基化物进行，从而以高至高收率形成相应的2，3-反式-二取代产物，并且表明二甲基可以用作假取代基。 。发现2-和3-苯并六氢苯并吡喃-5-酮可以容易地分别转化为5-羟基黄烷和5-羟基异黄烷。
• Metal-free intermolecular cyclopropanation between alkenes and iodonium ylides mediated by PhI(OAc)₂·Bu₄NI
  作者：Jason Tao、Carl D. Estrada、Graham K. Murphy

  DOI：10.1039/c7cc04859a

  日期：——

  A rapid, mild and metal-free intermolecular cyclopropanation between iodonium ylides and alkene-containing substrates mediated by PhI(OAc)2·Bu4NI is reported. Iodonium ylides of cyclic and acyclic 1,3-dicarbonyls were reacted with a variety of mono-, di-, tri- and tetra-substituted alkenes of various structural types to give 29 cyclopropanes in up to 97% yield.

  据报道，由PhI（OAc）2 ·Bu 4 NI介导的碘鎓烷基化物和含烯烃的底物之间快速，温和且无金属的分子间环丙烷化作用。使环状和无环1，3-二羰基的碘鎓碘化物与各种不同结构类型的单，二，三和四取代的烯烃反应，以最高97％的收率得到29个环丙烷。
• Ring-opening cyclization of spirocyclopropanes with stabilized sulfonium ylides for the construction of a chromane skeleton
  作者：Hisanori Nambu、Yuta Onuki、Naoki Ono、Kiyoshi Tsuge、Takayuki Yakura

  DOI：10.1039/c9cc03023a

  日期：——

  Regioselective ring-opening cyclization of cyclohexane-1,3-dione-2-spirocyclopropanes with stabilized sulfonium ylides provided 2,3-trans-disubstituted 2,3,4,6,7,8-hexahydro-5H-1-benzopyran-5-ones in high yields without the formation of any isomers. The obtained product was readily converted into highly substituted chromane.

  环己烷-1,3-二酮-2-螺环丙烷与稳定的硫鎓烷基化物的区域选择性开环环化提供了2,3-反式-二取代的2,3,4,6,7,8-六氢-5 H -1-苯并吡喃-高产率的5-ones，不形成任何异构体。所获得的产物易于转化为高度取代的苯并二氢吡喃。
• Acid-Catalyzed Ring-Opening Cyclization of Spirocyclopropanes for the Construction of a 2-Arylbenzofuran Skeleton: Total Synthesis of Cuspidan B
  作者：Hisanori Nambu、Takayuki Yakura、Naoki Ono

  DOI：10.1055/s-0035-1561590

  日期：——

  Abstract Acid-catalyzed ring-opening cyclization of cyclohexane-1,3-dione-2-spirocyclopropanes under metal-free conditions proceeded smoothly at room temperature to provide 2-aryl-3,5,6,7-tetrahydro-1-benzofuran-4(2H)-ones in excellent yields without the formation of 3-substituted isomers. The obtained product was converted into a 2-arylbenzofuran derivative via a synthetically useful 2-aryl-2,3-dihydrobenzofuran

  摘要 在无金属条件下，环己烷-1,3-二酮-2-螺环丙烷的酸催化开环环化反应在室温下顺利进行，得到2-芳基-3,5,6,7-四氢-1-苯并呋喃-4 （2 H）-一的产率极高，而不会形成3-取代的异构体。所得产物通过合成上有用的2-芳基-2，3-二氢苯并呋喃中间体转化为2-芳基苯并呋喃衍生物。此外，通过使用本方法实现了cuspidan B的第一全合成。 在无金属条件下，环己烷-1,3-二酮-2-螺环丙烷的酸催化开环环化反应在室温下顺利进行，得到2-芳基-3,5,6,7-四氢-1-苯并呋喃-4 （2 H）-一的产率极高，而不会形成3-取代的异构体。所得产物通过合成上有用的2-芳基-2，3-二氢苯并呋喃中间体转化为2-芳基苯并呋喃衍生物。此外，通过使用本方法实现了cuspidan B的第一全合成。
• Iodide-Catalyzed Ring-Opening Cyclization of Cyclohexane-1,3-dione-2-spirocyclopropanes
  作者：Hisanori Nambu、Yuta Onuki、Naoki Ono、Takayuki Yakura

  DOI：10.1002/adsc.201800551

  日期：2018.8.6

  The ring‐opening cyclization of 2′,3′‐nonsubstituted and 2′‐electron‐withdrawing group (EWG)‐substituted cyclohexane‐1,3‐dione‐2‐spirocyclopropanes was accomplished using iodide as a catalyst. The nonsubstituted derivatives afforded 3,5,6,7‐tetrahydro‐1‐benzofuran‐4(2H)‐ones in high yields in the presence of trimethylsilyl iodide at room temperature. The EWG‐substituted spirocyclopropanes, in turn, underwent

  2'，3'-未取代和2'-吸电子基团（EWG）取代的环己烷-1,3-二酮-2-螺环丙烷的开环环化反应是使用碘化物作为催化剂进行的。在室温下，在存在三甲基甲硅烷基碘化物的情况下，未取代的衍生物可高收率提供3,5,6,7-四氢-1-苯并呋喃-4（2 H）-1 。然后，将EWG取代的螺环丙烷进行区域选择性的开环，然后进行环化，当使用碘化四丁基铵催化剂和三氟甲磺酸的组合时，生成2取代的四氢苯并呋喃-4-酮，而碘化钙则提供3取代基衍生品。