(E)-3-(3-chlorobenzylidene)-4-chromanone | 1262616-91-0

• 分子结构分类: 有机化合物 - 苯丙烷和聚酮 - 高异黄酮
• 英文名称: (E)-3-(3-chlorobenzylidene)-4-chromanone
• 英文别名: (3E)-3-[(3-chlorophenyl)methylidene]chromen-4-one
• CAS: 1262616-91-0
• 化学式: C₁₆H₁₁ClO₂
• 分子量: 270.715
• InChiKey: LFDFZOZXPJDQMU-XYOKQWHBSA-N

计算性质

• 辛醇/水分配系数(LogP)：
  4
• 重原子数：
  19
• 可旋转键数：
  1
• 环数：
  3.0
• sp3杂化的碳原子比例：
  0.06
• 拓扑面积：
  26.3
• 氢给体数：
  0
• 氢受体数：
  2

反应信息

• 作为反应物：
  描述：

  (E)-3-(3-chlorobenzylidene)-4-chromanone 反应 6.0h， 以60%的产率得到(2'R,3S,3'R,4'S)-3',4'-bis(3-chlorophenyl)dispiro[chromane-3,1'-cyclobutane-2',3''-chromane]-4,4''-dione
  参考文献：
  名称：

  Topochemical photodimerization of (E)-3-benzylidene-4-chromanone derivatives from β-type structures directed by halogen groups

  摘要：

  Halogen substituent plays an important role in the crystalline packing of aromatic compounds. The [2+2] photocycloaddition of (E)-3-benzylidene-4-chromanones in the crystalline state was investigated, and halogen substitution has been adopted to organize molecules with proper arrangement for photodimerization. Not halogen bonds, but the electron-withdrawing property of halogen atoms can enhance the face-to-face pi-pi interactions. Therefore, F, Cl or Br substitution at the para position of phenyl gave rise to almost the same beta-structures with face-to-face pi-stacking. Only resulted beta-structures can undergo photodimerization, which gave the syn-HH (syn-head-to-head) products with high regio-/stereoselectivity. (C) 2011 Elsevier Ltd. All rights reserved.

  DOI：

  10.1016/j.tet.2011.09.087
• 作为产物：
  描述：

  2,3-二氢苯并吡喃-4-酮 、 3-氯苯甲醛 在 盐酸 作用下， 以 甲醇 、 水 为溶剂， 反应 24.0h， 以65%的产率得到(E)-3-(3-chlorobenzylidene)-4-chromanone
  参考文献：
  名称：

  Topochemical photodimerization of (E)-3-benzylidene-4-chromanone derivatives from β-type structures directed by halogen groups

  摘要：

  Halogen substituent plays an important role in the crystalline packing of aromatic compounds. The [2+2] photocycloaddition of (E)-3-benzylidene-4-chromanones in the crystalline state was investigated, and halogen substitution has been adopted to organize molecules with proper arrangement for photodimerization. Not halogen bonds, but the electron-withdrawing property of halogen atoms can enhance the face-to-face pi-pi interactions. Therefore, F, Cl or Br substitution at the para position of phenyl gave rise to almost the same beta-structures with face-to-face pi-stacking. Only resulted beta-structures can undergo photodimerization, which gave the syn-HH (syn-head-to-head) products with high regio-/stereoselectivity. (C) 2011 Elsevier Ltd. All rights reserved.

  DOI：

  10.1016/j.tet.2011.09.087

文献信息

• Enantioselective heterocyclic synthesis of spiro chromanone–thiochroman complexes catalyzed by a bifunctional indane catalyst
  作者：Yaojun Gao、Qiao Ren、Hao Wu、Maoguo Li、Jian Wang

  DOI：10.1039/c0cc03489d

  日期：——

  benzylidenechroman-4-ones and 2-mercaptobenzaldehydes for efficient construction of spiro chromanone-thiochroman complexes were accomplished with high yields and excellent selectivities via a novel bifunctional indane catalyst.

  通过新型双功能茚满催化剂以高收率和优异的选择性完成了亚苄基苯并二氢吡喃-4-酮和2-巯基苯甲醛的新型不对称多米诺反应，可高效构建螺并苯并二氢吡喃酮-硫代苯并二氢吡喃配合物。
• Enantioselective Synthesis of Densely Functionalized Pyranochromenes via an Unpredictable Cascade Michael-Oxa-Michael-Tautomerization Sequence
  作者：Qiao Ren、Yaojun Gao、Jian Wang

  DOI：10.1002/chem.201002490

  日期：2010.12.10

  A surprising example of enantioselective cascade Michael–oxa‐Michael–tautomerization reactions of malononitrile and benzylidenechromanones has been developed. In this case, malononitrile functions as both nucleophile and electrophile. Meanwhile, a simple bifunctional indane amine–thiourea catalyst has been discovered to promote this process to afford high yields (up to 99%) and high to excellent enantiomeric

  已经开发出令人惊讶的丙二腈和亚苄基苯并二氢呋喃酮的对映选择性级联迈克尔-氧杂-迈克尔-互变异构反应的例子。在这种情况下，丙二腈同时具有亲核试剂和亲电子试剂的功能。同时，已经发现一种简单的双功能茚满胺-硫脲催化剂可以促进这一过程，从而提供高收率（高达99％）和高到极好的对映体过量（81-99％ee）。
• Facile synthesis of spiro chromanone-tetrahydrothiophenes with three contiguous stereocenters via sulfa-Michael/aldol cascade reactions
  作者：Ya-Jian Hu、Xiao-Bing Wang、Su-Yi Li、Sai-Sai Xie、Kelvin D.G. Wang、Ling-Yi Kong

  DOI：10.1016/j.tetlet.2014.11.026

  日期：2015.1

  A novel sulfa-Michael/aldol cascade reaction of (E)-3-arylidenechroman-4-ones with 1,4-dithiane-2,5-diol has been developed. This method provides a new practical and facile approach to 4′-hydroxy-2′-aryl-4′,5′-dihydro-2′H-spiro[chroman-3,3′-thiophen]-4-ones with three contiguous stereocenters in high yields. The transformation is atom-economic with good to excellent diastereoselectivities.

  （E）-3-芳基苯并二氢吡喃-4-酮与1，4-二噻吩-2，5-二醇的新型磺胺-迈克尔/羟醛级联反应已得到开发。此方法提供了一种新的实用的和容易的方法来4'-羟基-2'-芳基-4'，5'-二氢-2' ħ -螺[色满-3,3'-噻吩] -4-酮用三个连续高产量的立体中心。该转化是原子经济的，具有良好的至优异的非对映选择性。
• Asymmetric Three-Component Cyclizations toward Structurally Spiro Pyrrolidines via Bifunctional Phosphonium Salt Catalysis
  作者：Lixiang Zhu、Xiaoyu Ren、Zhongxiu Liao、Jianke Pan、Chunhui Jiang、Tianli Wang

  DOI：10.1021/acs.orglett.9b03282

  日期：2019.11.1

  Asymmetric multicomponent reactions toward optically pure compounds are highly attractive but extremely challenging. Presented herein is a highly diastereo- and enantioselective three-component cyclization of exocyclic alkenes with aldehydes and amino esters, which was enabled by bifunctional phosphonium salt catalysts. A wide range of multiply substituted spiro pyrrolidine derivatives were prepared

  对光学纯化合物的不对称多组分反应极具吸引力，但极具挑战性。本文提出了环外烯烃与醛和氨基酯的高度非对映和对映选择性的三组分环化，其通过双官能functional盐催化剂实现。以高收率和优异的立体选择性制备了多种多取代的螺吡咯烷衍生物。值得注意的是，这是具有相转移催化体系的催化不对称三组分反应的第一个例子。
• Highly efficient construction of spirocyclic chromanone–pyrrolidines via Cu(i)/TF–BiphamPhos-catalyzed asymmetric 1,3-dipolar cycloaddition
  作者：Tang-Lin Liu、Zhao-Lin He、Chun-Jiang Wang

  DOI：10.1039/c1cc13554f

  日期：——

  A facile synthesis of highly functional spiro-[4-chromanone-3,3′-pyrrolidine] bearing one unique spiro quarternary and three tertiary stereogenic centers is developed in excellent stereoselectivity for the first time.

  首次以优异的立体选择性简便合成了具有一个独特的螺四元立体中心和三个叔立体中心的高功能螺-[4-苯并吡喃酮-3,3â²-吡咯烷]。