2-cyclopentylacrylaldehyde | 132101-37-2

• 分子结构分类: 有机化合物 - 有机氧化合物
• 英文名称: 2-cyclopentylacrylaldehyde
• 英文别名: Cyclopentylacrylaldehyde；2-cyclopentylprop-2-enal
• CAS: 132101-37-2
• 化学式: C₈H₁₂O
• 分子量: 124.183
• InChiKey: HBSXZZJREFNNRX-UHFFFAOYSA-N

物化性质

• 沸点：
  198.8±9.0 °C(Predicted)
• 密度：
  0.943±0.06 g/cm3(Predicted)

计算性质

• 辛醇/水分配系数(LogP)：
  2.3
• 重原子数：
  9
• 可旋转键数：
  2
• 环数：
  1.0
• sp3杂化的碳原子比例：
  0.62
• 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-cyclopentylacrylaldehyde 在 吡啶 、 叔丁基过氧化氢 、 4-二甲氨基吡啶 、 sodium tetrahydroborate 、 bis(acetylacetonate)oxovanadium 、 potassium tert-butylate 、 四丁基氟化铵 、 水 、 4-甲基苯磺酸吡啶 、 碳酸氢钠 、 三乙胺 作用下， 以 乙二醇二甲醚 、 乙醇 、 二氯甲烷 、 叔丁醇 为溶剂， 反应 12.83h， 生成 3-[3-(1-cyclopentylethenyl)oxiran-2-yl]-2,2-dimethyloxirane
  参考文献：
  名称：

  Total synthesis of spatol and other spatane diterpenes

  摘要：

  Total syntheses of three spatane diterpenes stoechospermol (1), 5(R),15(R),18-trihydroxyspata-13,16(E)-diene (2), and (+)-spatol (3) were accomplished from a common intermediate, diol 7. The total synthesis established as R the absolute configuration at the 15-position in 2. Novel stereospecific transformations of 2,3-epoxy-1,4-diols into vicinal diepoxides were demonstrated and exploited for assembling the sensitive allylic diepoxide in the side chain of spatol. This new synthetic method allows the conversion of both 1,2-threo-2,3-trans- and 1,2-erythro-2,3-trans-2,3-epoxy-1,4-diols into vicinal 1,2-cis-2,3-erythro-1,3-diepoxides. Unexpected stability toward hydroxide anion was found for the allylic diepoxide functional array. This observation provides presumptive evidence that acid catalysis is operative in the epoxide cleaving substitution reaction of spatol by the weakly nucleophilic chloride anion that gives chlorohydrin 4. A proclivity for erythro-selective epoxidation of allylic silyl ethers was found. The utility of C-silyl substituents for reversing this stereoselectivity, i.e., favoring threo-selective epoxidation of allylic silyl ethers, was established.

  DOI：

  10.1021/ja00008a044
• 作为产物：
  描述：

  环戊基丙二酸二乙酯 在 manganese(IV) oxide 、 氢氧化钾 、 聚合甲醛 、 sodium acetate 、 二异丁基氢化铝 、 溶剂黄146 、 二乙胺 作用下， 以 乙醚 、 乙醇 、 二氯甲烷 、 水 为溶剂， 反应 113.0h， 生成 2-cyclopentylacrylaldehyde
  参考文献：
  名称：

  Total synthesis of spatol and other spatane diterpenes

  摘要：

  Total syntheses of three spatane diterpenes stoechospermol (1), 5(R),15(R),18-trihydroxyspata-13,16(E)-diene (2), and (+)-spatol (3) were accomplished from a common intermediate, diol 7. The total synthesis established as R the absolute configuration at the 15-position in 2. Novel stereospecific transformations of 2,3-epoxy-1,4-diols into vicinal diepoxides were demonstrated and exploited for assembling the sensitive allylic diepoxide in the side chain of spatol. This new synthetic method allows the conversion of both 1,2-threo-2,3-trans- and 1,2-erythro-2,3-trans-2,3-epoxy-1,4-diols into vicinal 1,2-cis-2,3-erythro-1,3-diepoxides. Unexpected stability toward hydroxide anion was found for the allylic diepoxide functional array. This observation provides presumptive evidence that acid catalysis is operative in the epoxide cleaving substitution reaction of spatol by the weakly nucleophilic chloride anion that gives chlorohydrin 4. A proclivity for erythro-selective epoxidation of allylic silyl ethers was found. The utility of C-silyl substituents for reversing this stereoselectivity, i.e., favoring threo-selective epoxidation of allylic silyl ethers, was established.

  DOI：

  10.1021/ja00008a044

文献信息

• Catalytic, Enantioselective, and Highly Chemoselective Bromocyclization of Olefinic Dicarbonyl Compounds
  作者：Yi Zhao、Xiaojian Jiang、Ying-Yeung Yeung

  DOI：10.1002/anie.201304107

  日期：2013.8.12

  Overriding preferences: An amine–thiocarbamate catalyst can mediate the facile, efficient, and highly enantioselective bromocyclization of olefinic 1,3‐dicarbonyl compounds. In the presence of the bifunctional catalyst, the bromination occurs chemoselectively at the olefinic moiety rather than at the carbon atom in the α‐position to the carbonyl units.

  优先选择：胺-硫代氨基甲酸酯催化剂可介导烯烃1,3-二羰基化合物的简便，高效和高度对映选择性溴环化。在双功能催化剂的存在下，溴化反应是化学选择性地发生在烯烃部分，而不是发生在羰基单元α位的碳原子上。
• Heterocyclic Compounds as Janus Kinase Inhibitors
  申请人：Babu Yarlagadda S.

  公开号：US20120149662A1

  公开（公告）日：2012-06-14

  The invention provides compounds of formula (I): or a salt thereof as described herein. The invention also provides pharmaceutical compositions comprising a compound of formula (I), processes for preparing compounds of formula (I), intermediates useful for preparing compounds of formula (I) and therapeutic methods for suppressing an immune response or treating cancer or a hematologic malignancy using compounds of formula (I).

  本发明提供了以下式子（I）的化合物或其盐，如本文所述。本发明还提供了包含式子（I）化合物的制药组合物，制备式子（I）化合物的方法，用于制备式子（I）化合物的中间体以及使用式子（I）化合物抑制免疫反应或治疗癌症或血液恶性肿瘤的治疗方法。
• Substituted hepta-1,6-dien-3-ones with green/fruity odours green/galbanum olfactophore model
  作者：Jerzy A Bajgrowicz、Katja Berg-Schultz、Gerhard Brunner

  DOI：10.1016/s0968-0896(03)00189-5

  日期：2003.7

  Following an analysis of available SAR data on green/galbanum-smelling molecules, a series of new 2-substituted hepta-1,6-dien-3-ones and their analogues were prepared and their olfactory properties evaluated. The study allowed to select efficient new odourants-potential substitutes for natural galbanum oil-and to generate an olfactophore model for the green/galbanum note. (C) 2003 Elsevier Science Ltd. All rights reserved.
• A novel route to 2-fluoromethyl- and 2-hydroxymethyl-4-alkyl furans via allene oxides
  作者：Marek M. Kabat

  DOI：10.1016/0040-4039(96)01605-x

  日期：1996.10

  A four-step protocol for the synthesis of 2-fluoromethyl and 2-hydroxymethyl 4-alkyl furans 1a and 1b from a-alkyl acroleins 4 and 1-bromo-1-trimethylsilylethylene (5) via allene oxides 2 is elaborated, and is applied to the preparation of steroid furans 10, 11, 14 and 15 from alpha,beta-unsaturated aldehyde 8. Copyright (C) 1996 Published by Elsevier Science Ltd
• SALOMON, ROBERT G.;BASU, BASUDEB;ROY, SUBHAS;SACHINVALA, NAVZER D., J. AMER. CHEM. SOC., 113,(1991) N, C. 3096-3106
  作者：SALOMON, ROBERT G.、BASU, BASUDEB、ROY, SUBHAS、SACHINVALA, NAVZER D.

  DOI：——

  日期：——