2-pentylcyclopentane-1,3-dione | 15869-79-1

• 分子结构分类: 有机化合物 - 有机氧化合物
• 英文名称: 2-pentylcyclopentane-1,3-dione
• 英文别名: 2-Pentyl-1,3-cyclopentanedione
• CAS: 15869-79-1
• 化学式: C₁₀H₁₆O₂
• 分子量: 168.236
• InChiKey: WJFHZGWEIOVETL-UHFFFAOYSA-N

物化性质

• 熔点：
  149-151 °C
• 沸点：
  280.6±23.0 °C(Predicted)
• 密度：
  0.996±0.06 g/cm3(Predicted)

计算性质

• 辛醇/水分配系数(LogP)：
  2.2
• 重原子数：
  12
• 可旋转键数：
  4
• 环数：
  1.0
• sp3杂化的碳原子比例：
  0.8
• 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：

  2-pentylcyclopentane-1,3-dione 在 mercury(II) sulfate sodium hydroxide 、 硫酸 、 水 作用下， 以 甲醇 、 水 为溶剂， 反应 8.0h， 生成 (2-methyl-5-oxo-4-pentyl-cyclopent-1-enyl)-acetic acid
  参考文献：
  名称：

  Conversion of 2-Alkyl-2-(2-oxopropyl)cyclopentane-1,3-diones into 2,3,5- and 2,3,4-Trisubstituted Cyclopent-2-enones by Intramolecular Aldolizations to 2,3-Diacylcyclopropanolates Followed by Remarkable Skeletal Rearrangements¹

  摘要：

  2-Alkyl-2-(prop-2-ynyl)cyclopentane-1,3-diones 2, conveniently prepared from 2-alkylcyclopentane-1,3-diones 1 and prop-2-ynyl bromide, afford the triketones 3 by Hg2+-catalyzed hydration of the acetylenic triple bond. Treatment of these triketones with aqueous sodium hydroxide gives rise to the 2,3,5-trisubstituted cyclopent-2-enones 5, which are accompanied by the isomeric 2,3,4-trisubstituted cyclopent-2-enones 7 as byproducts. The formation of these isomers can be avoided, when the 2,2-disubstituted cyclopentane-1,3-diones 2 are first converted by ring cleavage into the 5-alkyl-4-oxooct-7-ynaic acids 4 and then by subsequent hydration into the 5-alkyl-4,7-dioxoalkanoic acids 6. An intramolecular aldolization of the latter forms exclusively the cyclopentenones 5. A mechanism explaining the simultaneous formation of 5 and 7 from 3 is based on the formation of the 2,3-diacylcyclopropanolates 11 and 16 by intramolecular aldolization and subsequent ring opening to the 2-acetylcyclohexane-1,4-diones 13 and 18. A further ring opening to the 4,7-dioxoalkanoates 15 and 20 followed by intramolecular aldol condensation then gives rise to the isomeric trisubstituted cyclopent-2-enones 5 and 7.

  DOI：

  10.1021/jo960189q
• 作为产物：
  描述：

  Methyl 4,4-dimethoxydecanoate 在 potassium tert-butylate 、 溶剂黄146 作用下， 以 甲醇 、 水 、 xylene 为溶剂， 反应 3.0h， 生成 2-pentylcyclopentane-1,3-dione
  参考文献：
  名称：

  RUTHENIUM HYDRIDE-CATALYZED DOUBLE BOND MIGRATION OF 2,5-DIMETHOXY-2,5-DIHYDROFURANS. A NEW PROCESS FOR THE PREPARATION OF γ-KETOESTERS

  摘要：

  γ-酮酯通过以铑氢化合物 HRuCl(PPh3)3(C6H5CH3) 或 HRuCl(CO)(PPh3)3 为催化剂的 2,5-二甲氧基-2,5-二氢呋喃的双键迁移反应获得，随后在酸性介质中水解，产率极高。

  DOI：

  10.1246/cl.1982.23

文献信息

• [EN] HERBICIDALLY ACTIVE HETEROARYL-S?BSTIT?TED CYCLIC DIONES OR DERIVATIVES THEREOF<br/>[FR] DIONES CYCLIQUES SUBSTITUÉES PAR HÉTÉROARYLE À ACTIVITÉ HERBICIDE OU DÉRIVÉS DE CELLES-CI
  申请人：SYNGENTA LTD

  公开号：WO2011012862A1

  公开（公告）日：2011-02-03

  The invention relates to a compound of formula (I), which is suitable for use as a herbicide wherein G is hydrogen or an agriculturally acceptable metal, sulfonium, ammonium or latentiating group; Q is a unsubstituted or substituted C3-C8 saturated or mono-unsaturated heterocyclyl containing at least one heteroatom selected from O, N and S, or Q is heteroaryl or substituted heteroaryl; m is 1, 2 or 3; and Het is an optionally substituted monocyclic or bicyclic heteroaromatic ring; and wherein the compound is optionally an agronomically acceptable salt thereof.

  该发明涉及一种化合物，其化学式为(I)，适用作为除草剂，其中G为氢或农业可接受的金属、磺酸盐、铵盐或潜伏基团；Q为未取代或取代的含有至少一个来自O、N和S的杂原子的饱和或单不饱和的C3-C8杂环烷基，或Q为杂芳基或取代的杂芳基；m为1、2或3；Het为可选择地取代的单环或双环杂芳环；且该化合物可选择地为其农学上可接受的盐。
• [EN] HERBICIDALLY ACTIVE 2-(SUBSTITUTED-PHENYL)-CYCLOPENTANE-1,3-DIONE COMPOUNDS AND DERIVATIVES THEREOF<br/>[FR] COMPOSÉS DE 2-(PHÉNYL SUBSTITUÉ)-CYCLOPENTANE-1,3-DIONE PRÉSENTANT UNE ACTIVITÉ HERBICIDE, ET LEURS DÉRIVÉS
  申请人：SYNGENTA LTD

  公开号：WO2014170413A1

  公开（公告）日：2014-10-23

  The present invention relates to a compound of formula (I): wherein the substituents are as defined herein, and wherein the compound of formula (I) is optionally present as an agrochemically acceptable salt thereof. These compounds are thought to be suitable for use as herbicides. The invention therefore also relates to a method of controlling weeds, especially grassy monocotyledonous weeds, in crops of useful plants, comprising applying a compound of formula (I), or a herbicidal composition comprising such a compound, to the plants or to the locus thereof.

  本发明涉及一种化合物，其化学式为（I）：其中取代基如本文所定义，并且化合物（I）可以选择地以其农药可接受的盐的形式存在。这些化合物被认为适合用作除草剂。因此，本发明还涉及一种控制杂草的方法，特别是在有用植物的作物中控制禾本科杂草，包括将化合物（I）或包含这种化合物的除草剂组合物施用于植物或其生长地点。
• Direct amino acid-catalyzed cascade biomimetic reductive alkylations: application to the asymmetric synthesis of Hajos–Parrish ketone analogues
  作者：Dhevalapally B. Ramachary、Mamillapalli Kishor

  DOI：10.1039/b807999d

  日期：——

  and enantioselective process for the double cascade synthesis of highly substituted 2-alkyl-cyclopentane-1,3-diones, 2-alkyl-3-methoxy-cyclopent-2-enones and Hajos-Parrish (H-P) ketone analogs is presented via reductive alkylation chemistry. For the first time, we have developed a single-step alkylation of cyclopentane-1,3-dione with aldehydes/ketones and a Hantzsch ester through an organocatalytic reductive

  直接氨基酸催化的化学和对映选择性工艺，用于高度取代的2-烷基-环戊烷-1,3-二酮，2-烷基-3-甲氧基-环戊-2-烯酮和Hajos-Parrish（HP酮类似物是通过还原烷基化化学方法得到的。通过有机催化还原烷基化策略，我们首次开发了通过醛/酮和Hantzsch酯的环戊烷1,3-二酮单步烷基化。氨基酸催化的级联烯化-加氢和环戊烷-1,3-二酮，醛/酮，Hantzsch酯和甲基乙烯基酮的级联罗宾逊环化的直接组合提供了高官能度的HP酮类似物，具有良好的高收率，并且具有优异的对映选择性。
• Aluminum Chloride-Mediated Dieckmann Cyclization for the Synthesis of Cyclic 2-Alkyl-1,3-alkanediones: One-Step Synthesis of the Chiloglottones
  作者：Ahlam M. Armaly、Sukanta Bar、Corinna S. Schindler

  DOI：10.1021/acs.orglett.7b01622

  日期：2017.8.4

  Cyclic 2-alkyl-1,3-alkanediones are ubiquitous structural motifs in many natural products of biological importance. Reported herein is an AlCl3·MeNO2-mediated Dieckmann cyclization reaction of general synthetic utility that enables direct access to complex 2-alkyl-1,3-dione building blocks from readily available dicarboxylic acid and acid chloride substrates. This new strategy enables direct synthetic

  在许多具有生物学重要性的天然产物中，环状2-烷基-1,3-烷二酮是普遍存在的结构基序。本文报道了一般合成用途的AlCl 3 ·MeNO 2介导的Dieckmann环化反应，其能够从容易获得的二羧酸和酰氯底物直接进入复杂的2-烷基-1,3-二酮结构单元。这项新策略可以通过一次合成转化，从商业材料直接合成获得香蒲酮植物信息素。
• [EN] HERBICIDALLY ACTIVE 2-(SUBSTITUTED-PHENYL)-CYCLOPENTANE-1,3-DIONE DERIVATIVES<br/>[FR] DÉRIVÉS 2-(SUBSTITUTION PHÉNYLE)-CYCLOPENTANE-1,3-DIONE À ACTIVITÉ HERBICIDE
  申请人：SYNGENTA LTD

  公开号：WO2011007146A1

  公开（公告）日：2011-01-20

  Compounds of formula (I) are suitable for use as herbicides: wherein R is methyl, ethyl, vinyl, ethynyl or cyclopropyl, R1 is hydrogen, C1-C6alkyl, C1-C6haloalkyl, C3-C7cycloalkyl, C1-C6alkoxy, C1-C6haloalkoxy, vinyl, propenyl, ethynyl, propynyl, halogen, or optionally substituted phenyl, R2 is methyl, ethyl, vinyl, ethynyl or methoxy, R3 and R4 are hydrogen or together form a double bond, A is C3-C7cycloalkyl which is unsubstituted or substituted once or twice by C1-C6alkyl, C1-C6haloalkyl, C1-C6alkoxy, C1-C6alkylcarbonyloxy, C2-C6alkenyl, =0 or =N-R10, or A is cyclohexyl substituted once, at the 4-position, by one (C3-C6cycloalkyl)methoxy, C3-C6cycloalkyloxy, C2-C5alkenyl-CH2-oxy, or benzyloxy substituent, or A is decahydro-1-naphthyl or decahydro-2-naphthyl, or A is optionally substituted phenyl, and G is hydrogen or an agriculturally acceptable metal, sulfonium, ammonium or a latentiating group.

  式(I)的化合物适用作为除草剂：其中R是甲基、乙基、乙烯基、乙炔基或环丙基，R1是氢、C1-C6烷基、C1-C6卤代烷基、C3-C7环烷基、C1-C6烷氧基、C1-C6卤代烷氧基、乙烯基、丙烯基、乙炔基、丙炔基、卤素，或可选择取代的苯基，R2是甲基、乙基、乙烯基、乙炔基或甲氧基，R3和R4是氢或一起形成双键，A是未取代或经过一次或两次取代的C3-C7环烷基，取代基为C1-C6烷基、C1-C6卤代烷基、C1-C6烷氧基、C1-C6烷基羰基氧基、C2-C6烯基、=0或=N-R10，或A是在4-位一次取代的环己基，取代基为一(C3-C6环烷基)甲氧基、C3-C6环烷氧基、C2-C5烯基-CH2-氧基，或苄氧基取代基，或A是去氢-1-萘基或去氢-2-萘基，或A是可选择取代的苯基，G是氢或一种农业可接受的金属、磺、铵或潜在基团。