1-butyl-4-(difluoromethyl)benzene | 1366392-18-8

• 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-butyl-4-(difluoromethyl)benzene
• CAS: 1366392-18-8
• 化学式: C₁₁H₁₄F₂
• 分子量: 184.229
• InChiKey: ONOJFNCEBYRVCY-UHFFFAOYSA-N

计算性质

• 辛醇/水分配系数(LogP)：
  4.4
• 重原子数：
  13
• 可旋转键数：
  4
• 环数：
  1.0
• sp3杂化的碳原子比例：
  0.45
• 拓扑面积：
  0
• 氢给体数：
  0
• 氢受体数：
  2

反应信息

• 作为产物：
  描述：

  三甲基-丙-2-基硅烷 、 1-正-丁基-4-碘苯 在 chloro[1,3-bis(2,6-di-i-propylphenyl)imidazol-2-ylidene]copper(I) 、 cesium fluoride 作用下， 以 1,4-二氧六环 、 甲苯 为溶剂， 反应 20.0h， 以50%的产率得到1-butyl-4-(difluoromethyl)benzene
  参考文献：
  名称：

  可分离的（NHC）Cu（CHF2）配合物的合成，反应性和催化应用

  摘要：

  Difluoromethyl copper complexes have been proposed as key intermediates in a variety of Cu-catalyzed difluoromethylation reactions. However, studies of these putative intermediates have been impeded by the low stability of these [Cu(CHF2)] species. This report describes the synthesis of isolable N-heterocyclic carbene ligated copper(I) difluoromethyl complexes. The stoichiometric reactions of these complexes with aryl electrophiles (i.e., diaryliodonium salts, aryl iodides, and aryl bromides) are described. In addition, N-heterocyclic carbene copper(I) species are demonstrated to serve as catalysts for the cross-coupling of aryl iodides with (difluoromethyl)trimethylsilane to afford difluoromethyl arene products.

  DOI：

  10.1021/acs.organomet.7b00025

文献信息

• Copper-Mediated Difluoromethylation of Aryl and Vinyl Iodides
  作者：Patrick S. Fier、John F. Hartwig

  DOI：10.1021/ja301013h

  日期：2012.3.28

  straightforward method for the cross-coupling of aryl and vinyl iodides with a difluoromethyl group generated from readily available reagents to form difluoromethylarenes and difluoromethyl-substituted alkenes. The reaction of electron-neutral, electron-rich, and sterically hindered aryl and vinyl iodides with the combination of CuI, CsF and TMSCF(2)H leads to the formation of difluoromethyl-substituted

  选择性氟化分子作为材料、药物和农用化学品很重要，但通过简单、温和的实验室方法合成它们具有挑战性。我们报告了一种直接的方法，用于将芳基和乙烯基碘与由现成的试剂产生的二氟甲基进行交叉偶联，以形成二氟甲基芳烃和二氟甲基取代的烯烃。电子中性、富电子和位阻芳基和乙烯基碘与 CuI、CsF 和 TMSCF(2)H 的组合反应导致高产率形成二氟甲基取代的产物，具有良好的官能团兼容性。这种转变令人惊讶，部分原因是先前观察到 CuCF(2)H 的不稳定性。
• [EN] DIFLUOROMETHYLATION OF ARYL AND VINYL IODIDES<br/>[FR] DIFLUOROMÉTHYLATION D'IODURES D'ARYLE ET DE VINYLE
  申请人：UNIV CALIFORNIA

  公开号：WO2013134296A1

  公开（公告）日：2013-09-12

  Selectively fluorinated molecules are important as materials, pharmaceuticals, and agrochemicals, but their synthesis by simple, mild, laboratory methods is challenging. We report a straightforward method for the cross-coupling of a difluoromethyl group with readily available reagents to form difluoromethylarenes. The reaction of electron-neutral, electronrich, and sterically hindered aryl and vinyl iodides with the combination of Cul, CsF and TMSCF2H leads to the formation of difluoromethylarenes in high yield with good functional group compatibility. This transformation is surprising, in part, because of the prior observation of the instability of CuCF2H.

  选择性氟化分子在材料、制药和农药中很重要，但通过简单、温和的实验室方法合成它们是具有挑战性的。我们报告了一种简单的方法，用于将二氟甲基基团与易得试剂进行交叉偶联，形成二氟甲基芳烃。电子中性、电子富集和空间位阻的芳基和乙烯基碘化物与Cul、CsF和TMSCF2H的组合反应导致了高产率的二氟甲基芳烃形成，并具有良好的官能团兼容性。这种转化令人惊讶，部分原因是之前观察到CuCF2H的不稳定性。
• Palladium-Catalyzed Difluoromethylation of Aryl Chlorides and Bromides with TMSCF₂H
  作者：Devin M. Ferguson、Christian A. Malapit、James R. Bour、Melanie S. Sanford

  DOI：10.1021/acs.joc.9b00324

  日期：2019.3.15

  A palladium-catalyzed cross-coupling of aryl chlorides/bromides with TMSCF2H is described. Two different catalysts, Pd(dba)2/BrettPhos and Pd(PtBu3)2, are demonstrated and provide a variety of difluoromethylated arenes in good yields.

  描述了钯催化的芳基氯化物/溴化物与TMSCF 2 H的交叉偶联。演示了两种不同的催化剂Pd（dba）2 / BrettPhos和Pd（P t Bu 3）2，它们以高收率提供了多种二氟甲基化的芳烃。
• DIFLUOROMETHYLATION OF ARYL AND VINYL IODIDES
  申请人：THE REGENTS OF THE UNIVERSITY OF CALIFORNIA

  公开号：US20150045580A1

  公开（公告）日：2015-02-12

  Selectively fluorinated molecules are important as materials, pharmaceuticals, and agrochemicals, but their synthesis by simple, mild, laboratory methods is challenging. We report a straightforward method for the cross-coupling of a difluoromethyl group with readily available reagents to form difluoromethylarenes. The reaction of electron-neutral, electronrich, and sterically hindered aryl and vinyl iodides with the combination of Cul, CsF and TMSCF 2 H leads to the formation of difluoromethylarenes in high yield with good functional group compatibility. This transformation is surprising, in part, because of the prior observation of the instability of CuCF 2 H.

  有选择性氟化的分子对于材料、制药和农药非常重要，但是通过简单、温和的实验室方法合成它们是具有挑战性的。我们报告了一种直接的方法，通过交叉偶联二氟甲基基团和易得到的试剂形成二氟甲基芳烃。电子中性、富电子和空间位阻的芳基和乙烯基碘化物与Cul、CsF和TMSCF2H的组合反应可以高产率地形成二氟甲基芳烃，并具有良好的官能团兼容性。这种转化令人惊讶，部分原因是因为之前观察到CuCF2H的不稳定性。
• A method of producing an aromatic ketone and an aromatic ketone composition containing it
  申请人：TORAY INDUSTRIES, INC.

  公开号：EP1053990A2

  公开（公告）日：2000-11-22

  In a method of producing an aromatic ketone an aromatic compound having an R-CH2 group ( R denotes an alkyl group, aryl group, allyl group or aralkyl group) is oxidised in liquid phase by an oxygen-containing gas in the presence of a catalyst comprising a heavy metal compound and at least one compound selected from (1) ammonia, (2) organic basic compounds and (3) onium halides while the water produced in the reaction is removed from the reaction solution. An aromatic ketone composition produced by the process comprises the aromatic ketone and 10 ppm to 3 wt% of at least one compound selected from: a benzene derivative of the formula (II) a vinylbenzene of the formula (III) a benzaldehyde of the formula (IV) where X is a substituent; n is zero or 1 to 5; R is alkyl, aryl, allyl or aralkyl and R1 is hydrogen, alkyl, aryl, allyl or aralkyl.

  在一种生产芳香酮的方法中，具有 R-CH2 基团（R 表示烷基、芳基、烯丙基或芳烷基）的芳香化合物在液相中被含氧气体氧化，催化剂包括重金属化合物和至少一种选自(1)氨、(2)有机碱性化合物和(3)卤化铌的化合物，同时从反应溶液中除去反应中产生的水。 由该工艺制得的芳香酮组合物包括芳香酮和 10ppm 至 3 wt%的至少一种选自以下的化合物： 式 (II) 的苯衍生物 式 (III) 的乙烯基苯 式 (IV) 的苯甲醛 其中 X 为取代基；n 为零或 1 至 5；R 为烷基、芳基、烯丙基或芳烷基，R1 为氢、烷基、芳基、烯丙基或芳烷基。