1-bromo-2-ethoxy-4-phenyl-3-oxa-5-hexene | 110969-19-2

• 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: 1-bromo-2-ethoxy-4-phenyl-3-oxa-5-hexene
• 英文别名: bromoacetaldehyde ethyl 1-phenylprop-2-enyl acetal；[1-(2-bromo-1-ethoxyethoxy)-prop-2-enyl]benzene；1-(2-Bromo-1-ethoxyethoxy)prop-2-enylbenzene
• CAS: 110969-19-2
• 化学式: C₁₃H₁₇BrO₂
• 分子量: 285.181
• InChiKey: WPEMJAKHOSDMIN-UHFFFAOYSA-N

计算性质

• 辛醇/水分配系数(LogP)：
  3.6
• 重原子数：
  16
• 可旋转键数：
  7
• 环数：
  1.0
• sp3杂化的碳原子比例：
  0.38
• 拓扑面积：
  18.5
• 氢给体数：
  0
• 氢受体数：
  2

反应信息

• 作为反应物：
  描述：

  1-bromo-2-ethoxy-4-phenyl-3-oxa-5-hexene 、 亚苯甲基丙二酸二乙酯 在 bis(acetylacetonate)nickel(II) diethylzinc 、 lithium iodide 作用下， 以 四氢呋喃 为溶剂， 反应 24.17h， 以61%的产率得到4-(3,3-dicarbethoxy-2-phenylpropyl)-2-ethoxy-5-phenyltetrahydrofuran
  参考文献：
  名称：

  Stereoselective Synthesis of Heterocyclic Zinc Reagents via a Nickel-Catalyzed Radical Cyclization

  摘要：

  Unsaturated iodo or bromo acetals of type 2 undergo a smooth cyclization mediated by diethylzinc (2 equiv) and Ni(acac)(2) as catalyst (2-5 mol %). These cyclizations proceed via a radical mechanism affording a (tetrahydrofuranylmethyl)zinc halide of type 1, which can be reacted with various electrophiles after a transmetalation with CuCN . 2LiCl. High stereoselectivities are usually observed in the ring closures, especially if monocyclic cyclization precursors are used. In these cases, bicyclic products of the endo-configuration are obtained with over 94% diastereoselectivity. The synthetic method has been extended to the preparation of a nitrogen heterocycle and over 98% pure trans-4,5-disubstituted gamma-butyrolactones. A short enantioselective synthesis of (-)-methylenolactocine (3) using the radical cyclization and a novel oxidation of alpha-silyl zinc peroxide as a key step is also described.

  DOI：

  10.1021/jo960617s
• 作为产物：
  描述：

  1-苯基-2-丙烯-1-醇 、 乙烯基乙醚 在 N-溴代丁二酰亚胺(NBS) 作用下， 以 二氯甲烷 为溶剂， 反应 2.0h， 以64%的产率得到1-bromo-2-ethoxy-4-phenyl-3-oxa-5-hexene
  参考文献：
  名称：

  铜（I）催化的带有卤代烷基的卤代烷基的立体和化学选择性硼基自由基环化反应

  摘要：

  使用铜（I）/二硼催化剂体系开发了含烯烃部分的卤代烷的立体选择性硼烷基自由基环化反应。优化的反应条件使我们能够控制烯丙基取代和硼基自由基环化之间的化学选择性。随后，通过新形成的C–B键的衍生化，硼酸酯化产物转化为高度官能化的有机化合物。这种硼基自由基环化为各种杂环化合物的立体选择性合成提供了一种新颖的方法。

  DOI：

  10.1021/acs.orglett.7b00940

文献信息

• Ueno, Yoshio; Moriya, Osamu; Chino, Kunitake, Journal of the Chemical Society. Perkin transactions I, 1986, p. 1351 - 1356
  作者：Ueno, Yoshio、Moriya, Osamu、Chino, Kunitake、Watanabe, Masaru、Okawara, Makoto

  DOI：——

  日期：——
• UENO YOSHIO; MORIYA OSAMU; CHINO KUNITAKE; WATANABE MASARU; OKAWARA MAKOT+, J. CHEM. SOC. PERKIN TRANS.,(1986) N 8, 1351-1356
  作者：UENO YOSHIO、 MORIYA OSAMU、 CHINO KUNITAKE、 WATANABE MASARU、 OKAWARA MAKOT+

  DOI：——

  日期：——
• Copper(I)-Catalyzed Stereo- and Chemoselective Borylative Radical Cyclization of Alkyl Halides Bearing an Alkene Moiety
  作者：Hiroaki Iwamoto、Sota Akiyama、Keiichi Hayama、Hajime Ito

  DOI：10.1021/acs.orglett.7b00940

  日期：2017.5.19

  The stereoselective borylative radical cyclization of alkyl halides containing an alkene moiety was developed using a copper(I)/diboron catalyst system. The optimized reaction conditions allowed us to control the chemoselectivity between the allylic substitution and the borylative radical cyclization. The borylation products were subsequently converted to highly functionalized organic compounds by

  使用铜（I）/二硼催化剂体系开发了含烯烃部分的卤代烷的立体选择性硼烷基自由基环化反应。优化的反应条件使我们能够控制烯丙基取代和硼基自由基环化之间的化学选择性。随后，通过新形成的C–B键的衍生化，硼酸酯化产物转化为高度官能化的有机化合物。这种硼基自由基环化为各种杂环化合物的立体选择性合成提供了一种新颖的方法。
• Stereoselective Synthesis of Heterocyclic Zinc Reagents via a Nickel-Catalyzed Radical Cyclization
  作者：Andrea Vaupel、Paul Knochel

  DOI：10.1021/jo960617s

  日期：1996.1.1

  Unsaturated iodo or bromo acetals of type 2 undergo a smooth cyclization mediated by diethylzinc (2 equiv) and Ni(acac)(2) as catalyst (2-5 mol %). These cyclizations proceed via a radical mechanism affording a (tetrahydrofuranylmethyl)zinc halide of type 1, which can be reacted with various electrophiles after a transmetalation with CuCN . 2LiCl. High stereoselectivities are usually observed in the ring closures, especially if monocyclic cyclization precursors are used. In these cases, bicyclic products of the endo-configuration are obtained with over 94% diastereoselectivity. The synthetic method has been extended to the preparation of a nitrogen heterocycle and over 98% pure trans-4,5-disubstituted gamma-butyrolactones. A short enantioselective synthesis of (-)-methylenolactocine (3) using the radical cyclization and a novel oxidation of alpha-silyl zinc peroxide as a key step is also described.