(E)-1-nitro-2-(3',4'-dimethoxyphenyl)-1-butene | 149893-78-7

• 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: (E)-1-nitro-2-(3',4'-dimethoxyphenyl)-1-butene
• 英文别名: 1,2-dimethoxy-4-[(E)-1-nitrobut-1-en-2-yl]benzene
• CAS: 149893-78-7
• 化学式: C₁₂H₁₅NO₄
• 分子量: 237.255
• InChiKey: DPBGMHRYQGZGLD-CMDGGOBGSA-N

计算性质

• 辛醇/水分配系数(LogP)：
  3.2
• 重原子数：
  17
• 可旋转键数：
  4
• 环数：
  1.0
• sp3杂化的碳原子比例：
  0.33
• 拓扑面积：
  64.3
• 氢给体数：
  0
• 氢受体数：
  4

反应信息

• 作为反应物：
  描述：

  (E)-1-nitro-2-(3',4'-dimethoxyphenyl)-1-butene 在 platinum(IV) oxide 氢气 、 四氯化锡 作用下， 以 甲醇 、 二氯甲烷 为溶剂， -78.0~25.0 ℃ 、1.1 MPa 条件下， 反应 39.0h， 生成 Acetic acid (3S,4R)-4-(3,4-dimethoxy-phenyl)-4-ethyl-pyrrolidin-3-yl ester
  参考文献：
  名称：

  Nitroalkene [4 + 2] Cycloadditions with 2-(Acyloxy)vinyl Ethers. Stereoselective Synthesis of 3-Hydroxy-4-substituted-pyrrolidines

  摘要：

  2-(Acyloxy)vinyl ethers undergo regioselective [4 + 2] cycloadditions with nitroalkenes (promoted by SnCl4) to afford subsutituted 5-acetoxy nitronates in good yields (68-91%). Endo/exo selectivity in the cycloadditions has been found to be dependent on the nitroalkene substitution; 2-aryl-1-nitroalkenes provided exclusively exo cycloadducts while 2-cyclohexyl-1-nitroalkene 28 afforded predominately endo cycloadducts in a ratio of 12:1. The resulting nitronates can be elaborated to N-tosyl-4-substituted-3-hydroxypyrrolidines by hydrogenolysis (160 psi of H-2/PtO2) or to bicyclic alpha-hydroxy lactams by [3 + 2] cycloaddition followed by hydrogenation (14.7 psi of H-2/Raney nickel). A chiral 2-acetoxyvinyl ether derived from (R)-2,2-diphenylcyclopentanol has been employed in the cycloaddition-hydrogenation sequence to prepare an optically active N-tosyl-3-hydroxypyrrolidine in 96% ee.

  DOI：

  10.1021/jo00095a038
• 作为产物：
  描述：

  (Z)-1-nitro-2-(3',4'-dimethoxyphenyl)-1-butene 在 甲铝双(2,6-二叔丁基-4-苯甲醚) 作用下， 以 甲苯 为溶剂， 反应 2.0h， 生成 (E)-1-nitro-2-(3',4'-dimethoxyphenyl)-1-butene
  参考文献：
  名称：

  Asymmetric Construction of a Quaternary Carbon Center by Tandem [4 + 2]/[3 + 2] Cycloaddition of a Nitroalkene. The Total Synthesis of (−)-Mesembrine

  摘要：

  An efficient, total synthesis of the Sceletium alkaloid (-)-mesembrine is accomplished in seven steps and 19% yield from a functionalized nitroalkene (itself prepared in six steps and 34% yield from ethyl 3-bromopropionate). The construction of the octahydroindole framework of mesembrine features a tandem inter [4 + 2]/intra [3 + 2] cycloaddition of a 2,2-disubstituted 1-nitroalkene and a chiral vinyl ether derived from (1R,2S)-2-(l-methyl-l-phenylethyl)cyclo as the central strategic element. The two stereogenic centers of the natural product, which include a benzylic, quaternary center, were established in 26/1 selectivity in the tandem process.

  DOI：

  10.1021/jo970079z

文献信息

• Novel Synthesis of Alkenes via Triethylborane-Induced Free-Radical Reactions of Alkyl Iodides and <i>β</i>-Nitrostyrenes
  作者：Ju-Tsung Liu、Yeong-Jiunn Jang、Yuh-Kuo Shih、Shin-Ru Hu、Cheng-Ming Chu、Ching-Fa Yao

  DOI：10.1021/jo010213m

  日期：2001.9.1

  iodides 6 and 8 or tertiary alkyl iodides 9, 11, and 13, in the presence of 2 and air as radical initiator. The generation of the only product (E)-alkenes can be explained by the generation of the benzylic radical A and/or B as the intermediate only and the mechanism is similar to Scheme 1. Both (E)- and (Z)-16a-c are generated when (E)- and (Z)-15a-c are used to react with adamantyl radical under similar

  （E）-β-硝基苯乙烯1和三乙基硼烷2或三环己基硼烷4在室温下在空气中存在氧气作为自由基引发剂的条件下的反应产生高产率的反式烯烃（E）-3或（E）- 5，当1与由仲烷基碘化物6和8或叔烷基碘化物9制备的不同基团反应时，也可以制备中等至高产率的不同的（E）-烯烃（E）-5、7、10、12和14。参照图11和13，在2和空气的存在下作为自由基引发剂。唯一产物（E）-烯烃的产生可以通过仅作为中间体的苄基基团A和/或B的产生来解释，其机理与方案1相似。（E）-和（Z）-16a当（E）-和（Z）-15a-c与金刚烷基在相似条件下反应时，生成-c。当使用（E）-或（Z）-15d与金刚烷基自由基反应时，仅观察到（Z）-16d。（E）-和/或（Z）-烯烃的生成可以通过A和/或B自由旋转以生成A'和/或B'来解释，反之亦然，并且该机理被认为是通过NO 2 /烷基取代的自由基反应，如方案2所示。
• A general method for the preparation of 2,2-disubstituted 1-nitroalkenes
  作者：Scott E. Denmark、Lawrence R. Marcin

  DOI：10.1021/jo00067a016

  日期：1993.7

  A general and expeditious routs for the preparation of functionalized 2,2-disubstituted 1-nitroalkenes has been developed. Conjugate 1,4-addition of complex zinc cuprates (RCu(CN)ZnI) to easily obtained (E)-1-nitroalkenes, followed by trapping with phenylselenenyl bromide and subsequent oxidative elimination, afforded the corresponding 2,2-disubstituted 1-nitroalkenes in good yields. 2-Alkyl-2-aryl- and 2,2-dialkyl nitroalkenes 4b-g were prepared in 76-88% yield and obtained as E/Z isomeric mixtures, slightly favoring the Z isomer (approximately 1.0:1.5, E/Z).
• Denmark Scott E., Schnute Mark E., J. Org. Chem, 59 (1994) N 16, S 4576-4595
  作者：Denmark Scott E., Schnute Mark E.

  DOI：——

  日期：——
• Asymmetric Construction of a Quaternary Carbon Center by Tandem [4 + 2]/[3 + 2] Cycloaddition of a Nitroalkene. The Total Synthesis of (−)-Mesembrine
  作者：Scott E. Denmark、Lawrence R. Marcin

  DOI：10.1021/jo970079z

  日期：1997.3.1

  An efficient, total synthesis of the Sceletium alkaloid (-)-mesembrine is accomplished in seven steps and 19% yield from a functionalized nitroalkene (itself prepared in six steps and 34% yield from ethyl 3-bromopropionate). The construction of the octahydroindole framework of mesembrine features a tandem inter [4 + 2]/intra [3 + 2] cycloaddition of a 2,2-disubstituted 1-nitroalkene and a chiral vinyl ether derived from (1R,2S)-2-(l-methyl-l-phenylethyl)cyclo as the central strategic element. The two stereogenic centers of the natural product, which include a benzylic, quaternary center, were established in 26/1 selectivity in the tandem process.
• Nitroalkene [4 + 2] Cycloadditions with 2-(Acyloxy)vinyl Ethers. Stereoselective Synthesis of 3-Hydroxy-4-substituted-pyrrolidines
  作者：Scott E. Denmark、Mark E. Schnute

  DOI：10.1021/jo00095a038

  日期：1994.8

  2-(Acyloxy)vinyl ethers undergo regioselective [4 + 2] cycloadditions with nitroalkenes (promoted by SnCl4) to afford subsutituted 5-acetoxy nitronates in good yields (68-91%). Endo/exo selectivity in the cycloadditions has been found to be dependent on the nitroalkene substitution; 2-aryl-1-nitroalkenes provided exclusively exo cycloadducts while 2-cyclohexyl-1-nitroalkene 28 afforded predominately endo cycloadducts in a ratio of 12:1. The resulting nitronates can be elaborated to N-tosyl-4-substituted-3-hydroxypyrrolidines by hydrogenolysis (160 psi of H-2/PtO2) or to bicyclic alpha-hydroxy lactams by [3 + 2] cycloaddition followed by hydrogenation (14.7 psi of H-2/Raney nickel). A chiral 2-acetoxyvinyl ether derived from (R)-2,2-diphenylcyclopentanol has been employed in the cycloaddition-hydrogenation sequence to prepare an optically active N-tosyl-3-hydroxypyrrolidine in 96% ee.