(Z)-ethyl 7-hydroxyhept-2-enoate | 105198-41-2

• 分子结构分类: 有机化合物 - 脂质和类脂质分子 - 脂肪酰基
• 英文名称: (Z)-ethyl 7-hydroxyhept-2-enoate
• 英文别名: ethyl (Z)-7-hydroxyhept-2-enoate
• CAS: 105198-41-2
• 化学式: C₉H₁₆O₃
• 分子量: 172.224
• InChiKey: GIWXBENVYSOAKP-ALCCZGGFSA-N

物化性质

• 沸点：
  268.3±33.0 °C(Predicted)
• 密度：
  1.003±0.06 g/cm3(Predicted)

计算性质

• 辛醇/水分配系数(LogP)：
  1.2
• 重原子数：
  12
• 可旋转键数：
  7
• 环数：
  0.0
• sp3杂化的碳原子比例：
  0.67
• 拓扑面积：
  46.5
• 氢给体数：
  1
• 氢受体数：
  3

反应信息

• 作为反应物：
  描述：

  (Z)-ethyl 7-hydroxyhept-2-enoate 在 T406石油添加剂 、 samarium diiodide 、 草酰氯 、 4 Angstroem MS 、 二甲基亚砜 、 三乙胺 作用下， 以 二氯甲烷 为溶剂， 反应 12.5h， 生成 ethyl cis-(2-morpholinocyclopentyl)ethanoate
  参考文献：
  名称：

  Diastereoselective Synthesis of Cycloalkylamines by Samarium Diiodide-Promoted Cyclizations of α-Amino Radicals Derived from α-Benzotriazolylalkenylamines

  摘要：

  The condensation of omega-unsaturated aldehydes with benzotriazole and secondary amines affords alpha-benzotriazolylalkenylamines that exist in solution as mixtures of the corresponding benzotriazol-1-yl and benzotriazol-2-yl isomers resulting from their rapid dissociation into iminium cations and the benzotriazolyl anion. The reduction of these adducts with samarium diiodide (SmI2) takes place with formation of the benzotriazolyl anion and alpha-amino alkenyl radicals that undergo 5- or 6-exo-trig cyclizations leading to substituted cycloalkyl- or cycloheteroalkylamines. The presence of an electron-withdrawing substituent in the alkene subunit is required for efficient cyclizations. The formation of cyclopentylamines takes place with unusually high 1,5-cis selectivity (hex-5-enyl radical numbering), and the presence of a 2- or 4-Me substituent also imparts high 1,2- or 1,4-trans stereoinduction, respectively. The corresponding six-membered rings, however, are formed with low diastereoselectivity. Semiempirical calculations performed on model systems suggest that a stabilizing secondary orbital interaction between the amino group and the electron-deficient alkene might in part account for the enhanced cis-selectivity encountered.

  DOI：

  10.1021/jo960957d
• 作为产物：
  描述：

  delta-戊内酯 在 正丁基锂 、 二异丁基氢化铝 作用下， 以 四氢呋喃 、 正己烷 、 甲苯 为溶剂， 反应 6.17h， 生成 (Z)-ethyl 7-hydroxyhept-2-enoate
  参考文献：
  名称：

  Catalytic Iron-Mediated Triene Carbocyclizations: Stereoselective Five-Membered Ring Forming Carbocyclizations

  摘要：

  The full details of investigations into the regiochemistry and stereochemistry of iron-catalyzed carbocyclizations of 2,7,9-decatriene derivatives to form five-membered carbocyclic ring systems are described. The roles of the allylic substituent, the alkene geometry, diene substitution, and the influence of resident stereogenic centers incorporated in the tether chain connecting the reacting 1,3-diene and alkene subunits are discussed.

  DOI：

  10.1021/jo00102a016

文献信息

• Studies towards a postulated biomimetic Diels-Alder reaction for the synthesis of himgravine
  作者：Jack E. Baldwin、Richard Chesworth、Jeremy S. Parker、Andrew T. Russell

  DOI：10.1016/0040-4039(95)02045-4

  日期：1995.12

  The possible role of an iminium ion mediated Diels-Alder reaction on the biosynthetic pathway to himgravinc is discussed. The results of a preliminary investigation of a related oxycarbenium ion mediated Diels-Alder reaction are reported and are in accord with the stereochemistry of the natural product.

  讨论了亚胺离子介导的Diels-Alder反应在通往hegravinc的生物合成途径中的可能作用。据报道有关氧碳鎓离子介导的Diels-Alder反应的初步研究结果与天然产物的立体化学相符。
• In Situ Generation of Ylides for Tandem Oxidation-Olefination Reactions of Unactivated Diols
  作者：Andrew Graham、David Phillips

  DOI：10.1055/s-2008-1042799

  日期：——

  An efficient desymmetrization of diols is achieved using phosphonium salts which undergo deprotonation in the presence of a hindered amine base and manganese dioxide to produce α,β-unsaturated hydroxy esters in good yields.

  利用膦盐在位阻胺碱和二氧化锰存在下发生脱质子作用，可以高效地实现二元醇的非对称化，从而以良好的产率制得α,β-不饱和羟基酯。
• Asymmetric Dehydrative Cyclization of ω-Hydroxy Allyl Alcohols Catalyzed by Ruthenium Complexes
  作者：Shinji Tanaka、Tomoaki Seki、Masato Kitamura

  DOI：10.1002/anie.200904671

  日期：2009.11.9

  New axially chiral ligands and their allyl esters have been designed and synthesized. The combination of these ligands with [CpRu(CH3CN)3]PF6 has realized highly efficient intramolecular dehydrative cylization of ω‐hydroxy allyl alcohols, to give α‐alkenyl‐substituted cyclic ethers with up to greater than 99:1 enantiomeric ratio without activation of the allylic moieties (see scheme; Cp=cyclopentadienyl

  已经设计并合成了新的轴向手性配体及其烯丙基酯。这些配体与[CpRu（CH 3 CN）3 ] PF 6的结合实现了ω-羟基烯丙醇的高效分子内脱水环化反应，得到对映体比高达99：1的α-烯基取代的环状醚没有活化烯丙基部分（参见方案； Cp ＝环戊二烯基，naph ＝萘基，py ＝吡啶）。
• Diol desymmetrization as an approach to the synthesis of unsymmetrical dienyl diesters
  作者：David J. Phillips、Kathryn S. Pillinger、Wei Li、Angela E. Taylor、Andrew E. Graham

  DOI：10.1016/j.tet.2007.07.089

  日期：2007.10

  The tandem oxidation/Wittig olefination of unactivated diols utilizing manganese dioxide produces α,β-unsaturated hydroxy esters in high yields in a highly effective desymmetrization process. The formation of small quantities of the corresponding lactones suggests that the reaction may proceed through a lactol intermediate in some cases. The α,β-unsaturated hydroxy esters are transformed into symmetrical

  利用二氧化锰对未活化的二醇进行串联氧化/维蒂希烯化反应，可在高效的不对称化过程中以高收率产生α，β-不饱和羟基酯。少量相应内酯的形成表明，在某些情况下，反应可能会通过内酯中间体进行。使用PCC介导的第二次氧化/维蒂希烯化序列，将α，β-不饱和羟基酯转化为对称或不对称的二烯基二酯。
• Umpolung of Michael Acceptors Catalyzed by <i>N</i>-Heterocyclic Carbenes
  作者：Christian Fischer、Sean W. Smith、David A. Powell、Gregory C. Fu

  DOI：10.1021/ja058222q

  日期：2006.2.1

  N-Heterocyclic carbenes can catalyze beta-alkylations of a range of alpha,beta-unsaturated esters, amides, and nitriles that bear pendant leaving groups to form a variety of ring sizes. In this process, the nucleophilic catalyst transiently transforms the normally electrophilic beta carbon into a nucleophilic site through an unanticipated addition-tautomerization sequence.

  N-杂环卡宾可以催化一系列带有离去基团的α、β-不饱和酯、酰胺和腈的β-烷基化反应，形成各种大小的环。在这个过程中，亲核催化剂通过意想不到的加成-互变异构序列将正常亲电的β碳瞬间转变为亲核位点。