(Z)-2-bromo-3-(4-chlorophenyl)acrylaldehyde

• 分子结构分类: 有机化合物 - 苯丙烷和聚酮 - 肉桂醛
• 英文名称: (Z)-2-bromo-3-(4-chlorophenyl)acrylaldehyde
• 英文别名: (Z)-2-bromo-3-(4-chlorophenyl)prop-2-enal
• 化学式: C₉H₆BrClO
• 分子量: 245.503
• InChiKey: SNSNGNBVJGFTAC-YVMONPNESA-N

计算性质

• 辛醇/水分配系数(LogP)：
  3.3
• 重原子数：
  12
• 可旋转键数：
  2
• 环数：
  1.0
• sp3杂化的碳原子比例：
  0.0
• 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：

  (Z)-2-bromo-3-(4-chlorophenyl)acrylaldehyde 在 copper(I) oxide 、 sodium tetrahydroborate 、 potassium phosphate 作用下， 以 甲醇 、 二氯甲烷 、 二甲基亚砜 为溶剂， 反应 24.75h， 生成 [(Ξ)-4-((E)-4-chloro-benzylidene)-3-cyclohexyl-oxazolidin-2-ylidene]-cyclohexyl-amine
  参考文献：
  名称：

  Formation of substituted 2-iminooxazolidines via intermolecular 1,2-addition/intramolecular N-vinylation using 3-substituted-2-bromo-2-propen-1-ols as substrates

  摘要：

  The Cu2O-catalyzed reaction between equimolar amounts of easily available 3-substituted-2-bromo-2-propen-1-ols and dicyclohexyl carbodiimide in DMSO at 100 degrees C using K3PO4 as the base and in the absence of any additive exclusively delivers substituted 2-iminooxazolidines with yields up to 80%. The highly selective transformation is assumed to start with an intermolecular 1,2-addition, which is followed by an intramolecular N-vinylation. The products can also be obtained in the absence of Cu2O, albeit in lower yields. (C) 2018 Elsevier Ltd. All rights reserved.

  DOI：

  10.1016/j.tet.2018.08.051
• 作为产物：
  描述：

  4-chlorocinnamaldehyde 在 溴 、 三乙胺 作用下， 以 二氯甲烷 为溶剂， 反应 0.5h， 生成 (Z)-2-bromo-3-(4-chlorophenyl)acrylaldehyde
  参考文献：
  名称：

  β-芳基-β-芳氧基丙烯醛的一锅顺序不对称氢化†

  摘要：

  已经实现了β-芳基-β-芳氧基丙烯醛的一锅顺序不对称氢化，用于制备具有优异产率和良好对映选择性的手性3-芳基-3-芳氧基醇。该方法可用于氟西汀，阿莫西汀和相关类似物的新合成路线。

  DOI：

  10.1039/c6ob00871b

文献信息

• NHC-catalyzed C–O or C–N bond formation: efficient approaches to α,β-unsaturated esters and amides
  作者：Bo Zhang、Peng Feng、Yuxin Cui、Ning Jiao

  DOI：10.1039/c2cc32862c

  日期：——

  Simple and efficient NHC-catalyzed transformations of bromoenal or α,β-dibromoenal into α,β-unsaturated esters or amides with high stereoselectivity through C–O or C–N bond formation have been demonstrated. The NHC-catalyzed processes occur under mild conditions. The ready availability of the starting materials, avoidance of external oxidants and the usefulness of the products all make the strategy attractive.

  简单高效的NHC催化转化，通过C-O或C-N键形成，将溴代烯酸或α,β-二溴代烯酸高立体选择性地转化为α,β-不饱和酯或酰胺。NHC催化的过程在温和条件下进行。起始原料易于获得，避免使用外部氧化剂，以及产品的实用价值，都使这一策略具有吸引力。
• Organocatalytic Asymmetric Tandem Nazarov Cyclization/Semipinacol Rearrangement: Rapid Construction of Chiral Spiro[4.4]nonane-1,6-diones
  作者：Bin-Miao Yang、Pei-Jun Cai、Yong-Qiang Tu、Zhi-Xiang Yu、Zhi-Min Chen、Shuang-Hu Wang、Shao-Hua Wang、Fu-Min Zhang

  DOI：10.1021/jacs.5b04049

  日期：2015.7.8

  A novel organocatalytic asymmetric tandem Nazarov cyclization/semipinacol rearrangement reaction using "unactivated" substrates has been developed, generating a series of chiral spiro[4.4]nonane-1,6-diones in up to 96% yield and 97% enantiomeric excess. Significantly, it is the first direct example for asymmetric synthesis of cyclopentanones with four stereocenters using Nazarov cyclization. DFT calculations

  已经开发出一种使用“未活化”底物的新型有机催化不对称串联 Nazarov 环化/半匹萘醇重排反应，可生成一系列手性螺 [4.4] 壬烷-1,6-二酮，产率高达 96%，对映体过量率为 97%。值得注意的是，它是第一个使用 Nazarov 环化不对称合成具有四个立体中心的环戊酮的直接例子。DFT 计算已用于了解反应机理、立体化学和取代基效应。
• <scp>DMAP‐Catalyzed</scp> C—N Bond Formation for Diverse Synthesis of Imidazo[1,2‐ <i>a</i> ]pyrimidine and Pyrimido[1,2‐ <i>a</i> ]benzimidazole Derivatives
  作者：Le‐Le Shang、Yun Feng、Xing‐Lian Gao、Zi‐Ren Chen、Yu Xia、Wei‐Wei Jin、Chen‐Jiang Liu

  DOI：10.1002/cjoc.202000214

  日期：2020.12

  A DMAP (2‐dimethylaminopyridine)‐catalyzed condensation reactions for the successful direct construction of pyrimido[1,2‐a]benzimidazole or imidazo[1,2‐a]pyrimidine has been developed. The method utilizes readily available α‐bromocinnamaldehydes with 2‐aminobenzimidazole or 2‐aminoimidazole as starting materials in the presence of 2‐DMAP/TBHP. In the process, two C—N bonds were successfully constructed

  甲DMAP（2-二甲基氨基）嘧啶并用于的成功直接施工催化的缩合反应[1,2一]苯并咪唑或咪唑并[1,2一]嘧啶已经研制成功。该方法在2-DMAP / TBHP存在的情况下利用现成的α-溴肉桂醛与2-氨基苯并咪唑或2-氨基咪唑为起始原料。在此过程中，成功构建了两个CN键以合成目标化合物。当前的方法具有广泛的基材范围，产品多样化和无金属条件。
• Aminothiolation of α-Bromocinnamaldehydes to Access Imidazo[2,1-<i>b</i>]thiazoles by Incorporation of Two Distinct Photoinduced Processes
  作者：Ziren Chen、Weiwei Jin、Yu Xia、Yonghong Zhang、Mengwei Xie、Shangchao Ma、Chenjiang Liu

  DOI：10.1021/acs.orglett.0c02907

  日期：2020.11.6

  visible-light-promoted metal-free catalytic system was developed to achieve the aminothiolation of α-bromocinnamaldehydes. This mechanistically novel approach allows the synthesis of diverse imidazo[2,1-b]thiazole derivatives in satisfactory yields at room temperature under visible-light irradiation by incorporation of two distinct photoinduced processes. The reaction features readily accessible feedstocks

  开发了可见光促进的无金属催化体系，以实现α-溴肉桂醛的氨基硫醇化。这种机制新颖的方法允许通过掺入两种不同的光诱导过程，在室温下在可见光照射下以令人满意的产率合成各种咪唑并[2,1- b ]噻唑衍生物。该反应具有容易获得的原料，易于操作，温和的反应条件和广泛的反应范围的特征。
• N-Heterocyclic carbene-catalyzed formal cross-coupling reaction of α-haloenals with thiols: organocatalytic construction of sp2 carbon–sulfur bonds
  作者：Lin He、Hao Guo、Yuan-Zhen Li、Guang-Fen Du、Bin Dai

  DOI：10.1039/c4cc00154k

  日期：——

  A novel N-heterocyclic carbene (NHC)-catalyzed formal cross-coupling reaction between α-haloenals and thiols was developed. In the presence of 5 mol% NHC precursors and 1.6 equiv. potassium carbonate, various thiols coupled with α-haloenals to produce α-thioenals in 53% to 91% yield and excellent Z-selectivity.

  开发了一种新型N-杂环卡宾（NHC）催化的形式交叉偶联反应，涉及α-卤代烯醛和硫醇。在5 mol% NHC前体和1.6 equiv.碳酸钾的存在下，多种硫醇与α-卤代烯醛反应，以53%至91%的产率生成α-硫代烯醛，并具有优异的Z-选择性。