2-甲基-2-(4'-溴苯基)丙醛 | 32454-16-3

• 分子结构分类: 有机化合物 - 苯类化合物 - 苯和取代衍生物
• 中文名称: 2-甲基-2-(4'-溴苯基)丙醛
• 英文名称: 2-(4-bromophenyl)-2-methyl-propionaldehyde
• 英文别名: 2-Methyl-2-(4'-bromophenyl)propanal；2-(4-bromophenyl)-2-methylpropanal；2-methyl-2-(4-bromophenyl)propanal；2-methyl-2-(p-bromophenyl)propanal；2-p-Bromphenyl-2-methylpropanal
• CAS: 32454-16-3
• 化学式: C₁₀H₁₁BrO
• 分子量: 227.101
• InChiKey: WDCNOQSTJRGLOG-UHFFFAOYSA-N

计算性质

• 辛醇/水分配系数(LogP)：
  2.9
• 重原子数：
  12
• 可旋转键数：
  2
• 环数：
  1.0
• sp3杂化的碳原子比例：
  0.3
• 拓扑面积：
  17.1
• 氢给体数：
  0
• 氢受体数：
  1

安全信息

• 危险性防范说明：
  P261,P264,P270,P271,P280,P301+P312,P302+P352,P304+P340,P305+P351+P338,P330,P332+P313,P337+P313,P362,P403+P233,P405,P501
• 危险性描述：
  H302,H315,H319,H335
• 储存条件：
  -20°C，惰性气体

反应信息

• 作为反应物：
  描述：

  2-甲基-2-(4'-溴苯基)丙醛 在 potassium tert-butylate 作用下， 以 N,N-二甲基甲酰胺 为溶剂， 反应 8.0h， 生成 4-(4'-Cyanophenyl)-2,4-dimethyl-2-pentene
  参考文献：
  名称：

  Rearrangement of 1,3-diradicals. Arylcyclopropane photochemistry

  摘要：

  The photochemistry of a series of aryl-substituted cyclopropanes was investigated as part of our continuing investigations of these systems. The literature held a puzzling discrepancy in which several similar reactants exhibited differing photochemistry. A series of 3-aryl-1,1,2,2-tetramethylcyclopropanes was found to rearrange photochemically to give primarily two types of products, the anticipated 4-aryl-2,3,3-trimethyl-1-butenes and, additionally, 1-aryl-2,3,3-trimethyl-1-butenes. The latter arise from regioselective methyl migration of intermediate singlet 1,3-diradicals. Also, the usual Griffin carbene fragmentation was encountered as a minor pathway. Biphenylyl-, p-cyanophenyl-, and p-anisyl-substituted cyclopropanes were studied. Also, the photochemistry of 3-phenyl-1,1,2,2-tetramethylcyclopropane was reinvestigated and found to conform to the general pattern of reactivity. Throughout, it was the singlet excited states responsible for the observed reactivity, and the triplet counterparts were found to be unreactive. In addition, the photochemistry of 3-biphenylyl-2,2-dimethyl-1,1-diphenylcyclopropane was studied. Again, the triplet was unreactive. The singlet gave rise to 4-biphenylyl-2-methyl-3,3-diphenyl-1-butene exclusively. The differing behavior of the various arylcyclopropanes is discussed from a mechanistic viewpoint. In the case of the 3-aryl-1,1,2,2-tetramethylcyclopropanes, the regioselectivity of the 1,3-diradical intermediate favors migration toward the less delocalized odd-electron center. This selectivity is understood on a quantum mechanical basis. Finally, quantum yields are reported.

  DOI：

  10.1021/jo00005a018
• 作为产物：
  描述：

  2-(4-溴苯基)-2-甲基丙酸乙酯 在 吡啶 、 lithium aluminium tetrahydride 、 三氧化硫 、 三乙胺 作用下， 以 二甲基亚砜 为溶剂， 生成 2-甲基-2-(4'-溴苯基)丙醛
  参考文献：
  名称：

  光化学反应。第63篇[1]。α-芳基醛的光脱羰

  摘要：

  醛的紫外线照射6 - 11在排他地在脱羰基的主要产品脱气的解决方案的结果34，35和37 - 40，以及少量的2,3-二苯基2,3二甲基丁烷36从苯基醛6和7。在三-的存在Ñ -butylstannane，锡烷氢竞速赛的掺入，对具体底物的限制，并在分子内氘转移7 35和11 40。对于苯醛6和苯甲醛，脱羰基的量子产率为Φ〜0.4-1.0。9，和0.02 8.哈米特Φ与共振常数（相关性[R ）为6（X = H，p -CH 3，OCH 3）和（CF 3）中，用ω米+为值元取代的异构体是与拟议的将α-裂解为仅具有中等自由基特征的相关自由基对作为主要的光化学步骤相一致。

  DOI：

  10.1002/hlca.19710540312

文献信息

• CF3CO2ZnEt-mediated highly regioselective rearrangement of bromohydrins to aldehydes
  作者：Zhihui Wang、Meiyi Li、Wenqin Zhang、Jiangnan Jia、Fei Wang、Song Xue

  DOI：10.1016/j.tetlet.2011.08.134

  日期：2011.11

  A highly efficient and selective rearrangement reaction of bromohydrins to aldehydes mediated by CF3CO2ZnEt was described. The secondary and tertiary aldehydes were prepared under mild conditions in good to excellent yields (85–99%). The scope and limitations of this rearrangement process were also investigated.

  描述了由CF 3 CO 2 ZnEt介导的溴代醇对醛类的高效选择性重排反应。仲醛和叔醛是在温和的条件下以良好至极佳的收率（85–99％）制备的。还研究了这种重排过程的范围和局限性。
• [EN] SUBSTITUTED PYRIMIDINES<br/>[FR] PYRIMIDINES SUBSTITUÉES
  申请人：MERCK SHARP & DOHME

  公开号：WO2013043624A1

  公开（公告）日：2013-03-28

  The present invention relates to substituted pyrimidines useful as HIF prolyl hydroxylase inhibitors to treat anemia and like conditions.

  本发明涉及作为HIF脯氨酰羟化酶抑制剂用于治疗贫血和类似病症的取代嘧啶。
• NEPRILYSIN INHIBITORS
  申请人：HUGHES Adam D.

  公开号：US20130109639A1

  公开（公告）日：2013-05-02

  In one aspect, the invention relates to compounds having the formula: where R 1 -R 6 , a, b, and Z are as defined in the specification, or a pharmaceutically acceptable salt thereof. These compounds have neprilysin inhibition activity. In another aspect, the invention relates to pharmaceutical compositions comprising such compounds; methods of using such compounds; and processes and intermediates for preparing such compounds.

  在一个方面，该发明涉及具有以下结构式的化合物： 其中R1-R6，a，b和Z如规范中定义，或其药学上可接受的盐。这些化合物具有神经肽酶抑制活性。在另一个方面，该发明涉及包含这些化合物的药物组合物；使用这些化合物的方法；以及制备这些化合物的过程和中间体。
• 4-AMINO-7,8-DIHYDROPYRIDO[4,3-d]PYRIMIDIN-5(6H)-ONE DERIVATIVES
  申请人：Aspnes Gary E.

  公开号：US20100197591A1

  公开（公告）日：2010-08-05

  The invention provides compounds of the general Formula (I) where R 1 , R 2 , and A are defined herein, as well as the preparation, compositions and uses thereof.

  这项发明提供了一般式（I）的化合物 其中R1、R2和A在此处定义，以及其制备、组成和用途。
• Brønsted Acid-Catalyzed Intramolecular Hydroarylation of β-Benzylstyrenes
  作者：Xiao Cai、Amir Keshavarz、Justin D. Omaque、Benjamin J. Stokes

  DOI：10.1021/acs.orglett.7b00958

  日期：2017.5.19

  triphenylmethylium tetrakis(pentafluorophenyl)borate as a convenient Brønsted acid precatalyst, β-(α,α-dimethylbenzyl)styrenes are shown to cyclize efficiently to afford a variety of new indanes that possess a benzylic quaternary center. The geminal dimethyl-containing quaternary center is proposed to be necessary to arm the substrate for cyclization through steric biasing.

  使用四（五氟苯基）硼酸三苯甲基铵作为方便的布朗斯台德酸预催化剂，β-（α，α-二甲基苄基）苯乙烯显示出有效的环化作用，从而提供了多种具有苄基季中心的新型茚满。提出了含双甲基的双季铵盐中心对于武装通过空间偏压环化的底物是必需的。