(2E,4E)-2-nitro-5-phenylpenta-2,4-dien-1-ol | 1190132-59-2

• 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: (2E,4E)-2-nitro-5-phenylpenta-2,4-dien-1-ol
• CAS: 1190132-59-2
• 化学式: C₁₁H₁₁NO₃
• 分子量: 205.213
• InChiKey: XOMWZSWSNMUXFO-VCABWLAWSA-N

计算性质

• 辛醇/水分配系数(LogP)：
  1.9
• 重原子数：
  15
• 可旋转键数：
  3
• 环数：
  1.0
• sp3杂化的碳原子比例：
  0.09
• 拓扑面积：
  66
• 氢给体数：
  1
• 氢受体数：
  3

反应信息

• 作为反应物：
  描述：

  (2E,4E)-2-nitro-5-phenylpenta-2,4-dien-1-ol 、 2-萘甲酰氯 在 三乙胺 作用下， 以 二氯甲烷 为溶剂， 生成 (2E,4E)-2-nitro-5-phenylpenta-2,4-dien-1-yl 2-naphthoate
  参考文献：
  名称：

  Asymmetric synthesis of tetrahydropyran[3,2-c]quinolinones via an organocatalyzed formal [3 + 3] annulation of quinolinones and MBH 2-naphthoates of nitroolefin

  摘要：

  An efficient asymmetric and enantio-swithchable organocatalytic [3 + 3] annulation reaction using MBH-2-naphthoates of nitroalkenes and 4-hydroxyquinolin-2(1H)-ones has been developed. Densely substituted tetrahydropyrano[3,2-c]quinolinones scaffolds with two adjacent stereogenic centers are obtained with high yield (up to 95% yield) and good stereoselectivities (up to >20:1 dr and 96% ee) in an enantio-switchable manner. Furthermore, gram scale synthesis was achieved and the nitro group could easily transform into an amino group without any appreciable loss in the diastereo- and enantioselectivity. (C) 2019 Chinese Chemical Society and Institute of Materia Medica, Chinese Academy of Medical Sciences. Published by Elsevier B.V. All rights reserved.

  DOI：

  10.1016/j.cclet.2019.08.040
• 作为产物：
  描述：

  反式肉桂醛 在 咪唑 、 sodium hydroxide 作用下， 以 四氢呋喃 、 甲醇 、 水 为溶剂， 生成 (2E,4E)-2-nitro-5-phenylpenta-2,4-dien-1-ol
  参考文献：
  名称：

  Asymmetric synthesis of tetrahydropyran[3,2-c]quinolinones via an organocatalyzed formal [3 + 3] annulation of quinolinones and MBH 2-naphthoates of nitroolefin

  摘要：

  An efficient asymmetric and enantio-swithchable organocatalytic [3 + 3] annulation reaction using MBH-2-naphthoates of nitroalkenes and 4-hydroxyquinolin-2(1H)-ones has been developed. Densely substituted tetrahydropyrano[3,2-c]quinolinones scaffolds with two adjacent stereogenic centers are obtained with high yield (up to 95% yield) and good stereoselectivities (up to >20:1 dr and 96% ee) in an enantio-switchable manner. Furthermore, gram scale synthesis was achieved and the nitro group could easily transform into an amino group without any appreciable loss in the diastereo- and enantioselectivity. (C) 2019 Chinese Chemical Society and Institute of Materia Medica, Chinese Academy of Medical Sciences. Published by Elsevier B.V. All rights reserved.

  DOI：

  10.1016/j.cclet.2019.08.040

文献信息

• Morita-Baylis-Hillman Reactions Between Conjugated Nitroalkenes or Nitrodienes and Carbonyl Compounds
  作者：Indubhusan Deb、Pramod Shanbhag、Shaikh M. Mobin、Irishi N. N. Namboothiri

  DOI：10.1002/ejoc.200900475

  日期：2009.8

  Morita–Baylis–Hillman (MBH) reactions between conjugated nitroalkenes or nitrodienes and various carbonyl compounds such as glyoxylate, trifluoropyruvate, pyruvaldehyde, oxomalonate, ninhydrin, and formaldehyde have been extensively investigated. The reactions proceeded smoothly in the presence of DMAP (40–100 mol-%) in acetonitrile and in some cases also in that of imidazole (100 mol-%) in CHCl3 or

  共轭硝基烯烃或硝基二烯与各种羰基化合物如乙醛酸、三氟丙酮酸、丙酮醛、氧代丙二酸、茚三酮和甲醛之间的 Morita-Baylis-Hillman (MBH) 反应已被广泛研究。在乙腈中存在 DMAP（40-100 mol-%）和在某些情况下也在 CHCl3 或 THF 中咪唑（100 mol-%）存在下，反应顺利进行，以提供良好到极好的产率的多功能加合物。在乙腈中由 DMAP 催化的反应在反应速率和 MBH 加合物的分离产率方面均优于咪唑催化的反应。DMAP 和咪唑在这些反应中的催化作用，与其他 MBH 催化剂如 DABCO 相比，主要归因于初始两性离子中间体的共振稳定。E 异构体是乙醛酸、丙酮醛和甲醛的主要或唯一产物，而 Z 异构体在三氟丙酮酸和茚三酮的情况下占主导地位。有趣的是，氧代丙二酸与芳香族硝基烯烃形成 E 异构体，与脂肪族硝基烯烃形成 Z 异构体。在某些 β-烷基-硝基乙烯的情况
• Photolabile blocked surfactants and compositions containing the same
  申请人：MINNESOTA MINING AND MANUFACTURING COMPANY

  公开号：EP0046083A2

  公开（公告）日：1982-02-17

  Surfactants which are blocked against surfactant action (identified herein as "photolabile blocked surfactants") by a photolabile protective or masking group but which, on exposure to actinic radiation, become unblocked are provided. Coating compositions in which surfactant is formed on irradiation are provided by blending the photolabile blocked surfactant with polymeric film-forming materials. Compositions containing the photolabile blocked surfactants are useful when employed as protective coatings on various substrates or as the adhesive in a pressure sensitive adhesive tape. Although initially well adhering to a substrate, such compositions may be readily removed from the substrate following exposure of the same to suitable radiation which unblocks the surfactant to permit it to regain its surfactant activity.

  本发明提供的表面活性剂（此处称为 "光敏阻滞表面活性剂"）被光敏保护基团或掩蔽基团阻滞，但在暴露于光辐射时会解除阻滞。通过将光亲和性受阻表面活性剂与聚合物成膜材料混合，可提供在辐照时形成表面活性剂的涂层组合物。 含有光敏封端表面活性剂的组合物在用作各种基材的保护涂层或压敏胶带的粘合剂时非常有用。虽然最初能很好地粘附在基材上，但当基材暴露在适当的辐射下，表面活性剂就会解除阻塞，从而恢复其表面活性剂的活性，这样，这种组合物就可以很容易地从基材上去除。
• US4478967A
  申请人：——

  公开号：US4478967A

  公开（公告）日：1984-10-23
• US4599273A
  申请人：——

  公开号：US4599273A

  公开（公告）日：1986-07-08
• US4740600A
  申请人：——

  公开号：US4740600A

  公开（公告）日：1988-04-26