(E)-2-n-heptylidenecyclopentanone | 39189-74-7

• 分子结构分类: 有机化合物 - 有机氧化合物
• 英文名称: (E)-2-n-heptylidenecyclopentanone
• 英文别名: (E)-2-heptylidenecyclopentanone；2-heptylidenecyclopentanone；2-Heptylidenecyclopentan-1-one；(2E)-2-heptylidenecyclopentan-1-one
• CAS: 39189-74-7
• 化学式: C₁₂H₂₀O
• 分子量: 180.29
• InChiKey: PBNMXJOZTAVFCR-DHZHZOJOSA-N

物化性质

• 沸点：
  144-146 °C(Press: 16 Torr)
• 密度：
  0.974±0.06 g/cm3(Predicted)
• 溶解度：
  可溶于氯仿（少许）、甲醇（少许）
• LogP：
  2.506 (est)

计算性质

• 辛醇/水分配系数(LogP)：
  3.8
• 重原子数：
  13
• 可旋转键数：
  5
• 环数：
  1.0
• sp3杂化的碳原子比例：
  0.75
• 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：

  (E)-2-n-heptylidenecyclopentanone 在 溴 作用下， 以 四氯乙烯 为溶剂， 生成 2-heptyl-2-cyclopenten-1-one
  参考文献：
  名称：

  Process for producing 2-alkyl-2cyclopentenones

  摘要：

  从环戊酮和羰基化合物获得的2-(1-羟基烷基)环戊酮或2-烷基亚烯环戊酮，是从高产率开始生产2-烷基-2-环戊酮的工业上有利的过程。在以下一般式（1）中表示的2-(1-羟基烷基)环戊酮中（其中R1、R2、R3、R4、R5、R6和R7分别独立地表示氢原子、具有1至10个碳原子的烷基基团，可能具有一个或多个取代基或可能具有一个或多个取代基的芳香基团，且(1) R6或R7与R3和(2) R6或R7与R4或R5中的每一个可能结合在一起形成可能具有双键的环)在溴化合物和/或碘化合物的存在下进行脱水异构化。

  公开号：

  US20030109755A1
• 作为产物：
  描述：

  2-(1-hydroxyheptyl)cyclopentanone 在 对甲苯磺酸 作用下， 以 苯 为溶剂， 反应 0.5h， 以94%的产率得到(E)-2-n-heptylidenecyclopentanone
  参考文献：
  名称：

  通过烯丙基邻锡烷基酮基的分子间羟醛反应

  摘要：

  α，β-不饱和酮与三丁基锡自由基的温和中性自由基反应产生了共振稳定的烯丙基O-锡烷基酮基中间体。接下来，通过随后的氢原子转移生成的锡（IV）烯醇锡，再用各种醛淬灭，生成羟醛产物，可以很容易地用对甲苯磺酸消除，得到新的α/β-不饱和酮，其E / Z比最高为> 100：1。

  DOI：

  10.1016/0040-4039(95)01999-x

文献信息

• [EN] ORGANOCATALYSTS AND METHODS OF USE IN CHEMICAL SYNTHESIS<br/>[FR] ORGANOCATALYSEURS ET PROCEDES D'UTILISATION DE CES DERNIERS DANS LA SYNTHESE CHIMIQUE
  申请人：STC UNM

  公开号：WO2006007586A1

  公开（公告）日：2006-01-19

  The present invention pertains generally to compositions comprising organocatalysts that facilitate stereo-selective reactions and the method of their synthesis and use. Particularly, the invention relates to metal-free organocatalysts for facilitation of stereo-­selective reactions, and the method of their synthesis and use. These compounds have the structure of the Formulas (I) and (II). Where X is independently selected from CH2, N-Ra, O, S or C=O; Y is CH2, N-Ra, O, S or C=O, with the proviso that at least one of X or Y is CH2, and preferably both of X and Y are CH2; Ra is H, an optionally substituted C1-C12 alkyl, preferably an optionally substituted C1-C6 alkyl including a C3-C6 cyclic alkyl group, or an optionally substituted aryl group, preferably an optionally substituted phenyl group; Rb is H, an optionally substituted C1-C12 alkyl, preferably an optionally substituted C1-C6 acyclic or a a C3-C6 cyclic alkyl group, CHO, N(Me)O, CO(S)Ra or the group of Formula (III). Where Rc and Rd are each independently H, F, C1, an optionally substituted C1-C20 alkyl, preferably an optionally substituted C1-C12 alkyl, more preferably a C1-C6 alkyl, and an optionally substituted aryl group, or together Rc and Rd form an optionally substituted carbocyclic or optionally substituted heterocyclic ring; R1 is OH, OR, NR'R', NHC(=O)R, NHSO2R; R2 is H, F, C1, an optionally substituted C1-C20 alkyl, preferably an optionally substituted C1­C6 alkyl, an optionally substituted aryl group or a =O group (which establishes a carbonyl group with the carbon to which =O is attached; R3 is H, OH, F, C1, Br, I, Cl, an optionally substituted C1-C20 alkyl, alkenyl or alkynyl ('hydrocarbyl') group, preferably an optionally substituted C1-C6 alkyl, or an optionally substituted aryl, such that the carbon to which R3 is attached has an R or S configuration; R is H, an optionally substituted C1-C20 alkyl, preferably an optionally substituted C1-C6 alkyl, or an optionally substituted aryl group, R' and R' are each independently H, an optionally substituted C1-C20 alkyl group, preferably an optionally substituted C1-C6 alkyl, or an optionally substituted aryl group; or together R' and R' form an optionally substituted heterocyclic, preferably a 4 to 7 membered optionally substituted heterocyclic group or an optionally substituted heteroaryl ring with the nitrogen to which R' and R' are attached; and wherein said compound is free from a metal catalyst.

  本发明涉及一般包括有机催化剂的组合物，该催化剂促进立体选择性反应以及其合成和使用方法。特别地，本发明涉及无金属有机催化剂以促进立体选择性反应，以及其合成和使用方法。这些化合物具有以下结构的式（I）和（II）。其中X独立地选择自CH2、N-Ra、O、S或C=O；Y为CH2、N-Ra、O、S或C=O，但至少X或Y中的一个为CH2，最好是X和Y都为CH2；Ra为H、可选择地取代的C1-C12烷基，最好是可选择地取代的C1-C6烷基，包括C3-C6环烷基，或可选择地取代的芳基，最好是可选择地取代的苯基；Rb为H、可选择地取代的C1-C12烷基，最好是可选择地取代的C1-C6无环或C3-C6环烷基，CHO、N(Me)O、CO(S)Ra或式（III）的基团。其中Rc和Rd各自独立地为H、F、C1、可选择地取代的C1-C20烷基，最好是可选择地取代的C1-C12烷基，更好地是C1-C6烷基，以及可选择地取代的芳基，或者Rc和Rd一起形成可选择地取代的碳环或可选择地取代的杂环；R1为OH、OR、NR'R'、NHC(=O)R、NHSO2R；R2为H、F、C1、可选择地取代的C1-C20烷基，最好是可选择地取代的C1-C6烷基，可选择地取代的芳基或=O基团（与=O连接的碳形成羰基基团）；R3为H、OH、F、C1、Br、I、Cl、可选择地取代的C1-C20烷基、烯基或炔基（'烃基'），最好是可选择地取代的C1-C6烷基，或可选择地取代的芳基，使得R3连接的碳具有R或S构型；R为H、可选择地取代的C1-C20烷基，最好是可选择地取代的C1-C6烷基，或可选择地取代的芳基，R'和R'各自独立地为H、可选择地取代的C1-C20烷基，最好是可选择地取代的C1-C6烷基，或可选择地取代的芳基；或者R'和R'一起形成可选择地取代的杂环，最好是4到7成员的可选择地取代的杂环基团或与R'和R'连接的氮原子形成可选择地取代的杂芳基环；其中所述化合物不含金属催化剂。
• A Novel Pyrrolidine Imide Catalyzed Direct Formation of α,β-Unsaturated Ketones from Unmodified Ketones and Aldehydes
  作者：Wei Wang、Yujiang Mei、Hao Li、Jian Wang

  DOI：10.1021/ol047630g

  日期：2005.2.1

  (E)-alpha,beta-unsaturated ketones from ketones and aldehydes, promoted by a novel pyrrolidine imide organocatalyst, has been developed in moderate to high yields. Unlike the Claisen-Schmidt condensation and Lewis acid catalyzed tandem aldol-dehydration processes, this method provides mild reaction conditions to access alpha,beta-unsaturated ketones from simple, unmodified ketones. [reaction: see text]

  由酮和醛直接，立体选择性地制备（E）-α，β-不饱和酮的方法，由新型吡咯烷酰亚胺有机催化剂促进，已经以中等至高收率开发。与Claisen-Schmidt缩合反应和Lewis酸催化的串联醛醇缩合脱水过程不同，此方法提供了温和的反应条件，可从简单的未改性酮中获得α，β-不饱和酮。[反应：看文字]
• A New Lewis Acid System Palladium/TMSCl for Catalytic Aldol Condensation of Aldehydes with Ketones
  作者：Yulin Zhu、Yuanjiang Pan

  DOI：10.1246/cl.2004.668

  日期：2004.6

  catalyzed the aldol condensation reactions of different ketones with aldehydes in the presence of trimethylsilyl chloride (TMSCI). The following reactions were investigated: (1) aromatic aldehydes with cycloalkanones, (2) aromatic aldehydes with aromatic ketones, (3) cycloalkanones with aliphatic aldehydes, and (4) the self-condensation reactions of aliphatic aldehydes and cycloalkanones.

  在三甲基氯硅烷 (TMSCI) 存在下，钯炭有效地催化了不同酮与醛的羟醛缩合反应。研究了以下反应：（1）芳香醛与环烷酮，（2）芳香醛与芳香酮，（3）环烷酮与脂肪醛，以及（4）脂肪醛和环烷酮的自缩合反应。
• Organocatalysts and Methods of Use in Chemical Synthesis
  申请人：Wang Wie

  公开号：US20070244328A1

  公开（公告）日：2007-10-18

  The present invention pertains generally to compositions comprising organocatalysts that facilitate stereo-selective reactions and the method of their synthesis and use. Particularly, the invention relates to metal-free organocatalysts for facilitation of stereo-selective reactions, and the method of their synthesis and use. These compounds have the structure of the Formulas (I) and (II). Where X is independently selected from CH 2 , N—R a , O, S or C═O; Y is CH 2 , N—R a , O, S or C═O, with the proviso that at least one of X or Y is CH 2 , and preferably both of X and Y are CH 2 ; R a is H, an optionally substituted C 1 -C 12 alkyl, preferably an optionally substituted C 1 -C 6 alkyl including a C 3 -C 6 cyclic alkyl group, or an optionally substituted aryl group, preferably an optionally substituted phenyl group; R b is H, an optionally substituted C 1 -C 12 alkyl, preferably an optionally substituted C 1 -C 6 acyclic or a a C 3 -C 6 cyclic alkyl group, CIIO, N(Me)O, CO(S)R a or the group of Formula (III). Where R c and R d are each independently H, F, Cl, an optionally substituted C 1 -C 20 alkyl, preferably an optionally substituted C 1 -C 12 alkyl, more preferably a C 1 -C 6 alkyl, and an optionally substituted aryl group, or together R c and R d form an optionally substituted carbocyclic or optionally substituted heterocyclic ring; R 1 is OH, OR, NR′R″, NHC(═O)R, NHSO 2 R; R 2 is H, F, Cl, an optionally substituted C 1 -C 20 alkyl, preferably an optionally substituted C 1 C 6 alkyl, an optionally substituted aryl group or a ═O group (which establishes a carbonyl group with the carbon to which ═O is attached; R 3 is H, OH, F, Cl, Br, I, Cl, an optionally substituted C 1 -C 20 alkyl, alkenyl or alkynyl (“hydrocarbyl”) group, preferably an optionally substituted C 1 -C 6 alkyl, or an optionally substituted aryl, such that the carbon to which R 3 is attached has an R or S configuration; R is II, an optionally substituted C 1 -C 20 alkyl, preferably an optionally substituted C 1 -C 6 alkyl, or an optionally substituted aryl group, R′ and R″ are each independently H, an optionally substituted C 1 -C 20 alkyl group, preferably an optionally substituted C 1 -C 6 alkyl, or an optionally substituted aryl group; or together R′ and R″ form an optionally substituted heterocyclic, preferably a 4 to 7 membered optionally substituted heterocyclic group or an optionally substituted heteroaryl ring with the nitrogen to which R′ and R″ are attached; and wherein said compound is free from a metal catalyst.

  本发明涉及一种包含有机催化剂的组合物，该组合物促进立体选择性反应及其合成和使用的方法。特别地，本发明涉及无金属有机催化剂，以促进立体选择性反应，以及其合成和使用的方法。这些化合物具有公式（I）和（II）的结构。其中，X独立地选自CH2、N—Ra、O、S或C═O；Y为CH2、N—Ra、O、S或C═O，但至少X或Y中的一个为CH2，最好是X和Y都为CH2；Ra为H、可选取代的C1-C12烷基，最好是可选取代的C1-C6烷基，包括C3-C6环烷基，或可选取代的芳基，最好是可选取代的苯基；Rb为H、可选取代的C1-C12烷基，最好是可选取代的C1-C6非环烷基或C3-C6环烷基，CIIO、N(Me)O、CO(S)Ra或公式（III）的基团。其中，Rc和Rd各自独立地为H、F、Cl、可选取代的C1-C20烷基，最好是可选取代的C1-C12烷基，更好是C1-C6烷基，以及可选取代的芳基，或者Rc和Rd一起形成可选取代的碳环或可选取代的杂环；R1为OH、OR、NR′R″、NHC(═O)R、NHSO2R；R2为H、F、Cl、可选取代的C1-C20烷基，最好是可选取代的C1-C6烷基、可选取代的芳基或═O基团（与═O相连的碳原子上形成羰基基团）；R3为H、OH、F、Cl、Br、I、Cl、可选取代的C1-C20烷基、烯基或炔基（“烃基”）团，最好是可选取代的C1-C6烷基，或可选取代的芳基，使得R3连接的碳原子具有R或S构型；R为II、可选取代的C1-C20烷基，最好是可选取代的C1-C6烷基，或可选取代的芳基团，R′和R″各自独立地为H、可选取代的C1-C20烷基团，最好是可选取代的C1-C6烷基，或可选取代的芳基团；或者R′和R″一起形成可选取代的杂环，最好是4到7个成员的可选取代的杂环基团或与R′和R″连接的氮原子一起形成可选取代的杂环芳基环；其中所述化合物不含金属催化剂。
• Process for producing 2-alkyl-2-cyclopentenones
  申请人：Takasago International Corporation

  公开号：EP1316541A1

  公开（公告）日：2003-06-04

  Industrially advantageous processes for producing a 2-alkyl-2-cyclopentenone in high yields starting from a 2-(1-hydroxyalkyl)cyclopentanone or a 2-alkylidenecyclopentanone, which are obtainable from a cyclopentanone and a carbonyl compound. A 2-(1-hydroxyalkyl)cyclopentanone represented by the following general formula (1): is subjected to dehydrative isomerization or a 2- alkylidenecyclopentanone represented by the following general formula (3): is isomerized. Both reactions take place in the presence of a bromine compound and/or an iodine compound. In the above formulae, R1-R7 have the meanings given in the description.

  以 2-(1-羟基烷基)环戊酮或 2-亚烷基环戊酮为原料，高产率生产 2-烷基-2-环戊酮的具有工业优势的工艺，这些环戊酮可从环戊酮和羰基化合物中获得。由以下通式 (1) 代表的 2-(1-羟基烷基)环戊酮： 的 2-(1-羟基烷基)环戊酮进行脱水异构化，或将以下通式(3)代表的 2-亚烷基环戊酮进行异构化： 进行异构化。这两种反应均在溴化合物和/或碘化合物存在下进行。 在上式中，R1-R7 具有说明中给出的含义。