1-(溴甲基磺酰基)-4-甲基苯 | 37891-95-5

• 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: 1-(溴甲基磺酰基)-4-甲基苯
• 英文名称: bromomethyl 4-tolyl sulfone
• 英文别名: bromomethyl p-tolyl sulfone；1-((bromomethyl)sulfonyl)-4-methylbenzene；Brommethyl-p-tolyl-sulfon；Bromomethyl 4-methylphenyl sulfone；1-(bromomethylsulfonyl)-4-methylbenzene
• CAS: 37891-95-5
• 化学式: C₈H₉BrO₂S
• mdl: MFCD00091609
• 分子量: 249.128
• InChiKey: KMWBOUMDQCYJHD-UHFFFAOYSA-N

计算性质

• 辛醇/水分配系数(LogP)：
  3.1
• 重原子数：
  12
• 可旋转键数：
  2
• 环数：
  1.0
• sp3杂化的碳原子比例：
  0.25
• 拓扑面积：
  42.5
• 氢给体数：
  0
• 氢受体数：
  2

安全信息

• 海关编码：
  2904909090

反应信息

• 作为反应物：
  描述：

  1-(溴甲基磺酰基)-4-甲基苯 在 kryptofix 222 作用下， 以 邻二氯苯 为溶剂， 反应 0.25h， 生成 [18F]fluoromethyl bromide
  参考文献：
  名称：

  Synthesis, Ex Vivo Evaluation, and Radiolabeling of Potent 1,5-Diphenylpyrrolidin-2-one Cannabinoid Subtype-1 Receptor Ligands as Candidates for In Vivo Imaging

  摘要：

  We have reported that [methyl-C-11] (3R,5R)-5-(3-methoxyphenyl)-3-[(R)-1-phenylethylamino]-1-(4-trifluoromethylphenyl)pyrrolidin-2-one ([C-11]8, [C-11]MePPEP) binds with high selectivity to cannabinoid type-l (CB1) receptors in monkey brain in vivo. We now describe the synthesis of 8 and four analogues, namely, the 4-fluorophenyl (16, FMePPEP), 3-fluoromethoxy (20, FMPEP), 3-fluoromethoxy-d(2) (21, FMPEP-d(2)), and 3-fluoroethoxy analogues (22, FEPEP), and report their activity in an ex vivo model designed to identify compounds suitable for use as positron emission tomography (PET) ligands. These ligands exhibited high, selective potency at CB I receptors in vitro (K-b < 1 nM). Each ligand (30 mu g/kg, iv) was injected into rats under baseline and pretreatment conditions (3, rimonabant, 10 mg/kg, iv) and quantified at later times in frontal cortex ex vivo with liquid chromatography-mass spectrometry (LC-MS) detection. Maximal ligand uptakes were high (22.6-48.0 ng/g). Under pretreatment, maximal brain uptakes were greatly reduced (6.5 - 17.3 ng/g). Since each ligand readily entered brain and bound with high selectivity to CB 1 receptors, we then established and here describe methods for producing [C-11]8, [C-11] 16, and [[F-18]20-22 in adequate activities for evaluation as candidate PET radioligands in vivo.

  DOI：

  10.1021/jm800416m
• 作为产物：
  描述：

  1-[(bromomethyl)-sulfinyl]-4-methylbenzene 在 间氯过氧苯甲酸 作用下， 生成 1-(溴甲基磺酰基)-4-甲基苯
  参考文献：
  名称：

  α-卤代亚砜的合成

  摘要：

  亚砜与（二氯碘代）苯或与溴在吡啶存在下反应，得到相应的α-卤代亚砜。这里描述了α-卤代亚砜的一些反应。

  DOI：

  10.1039/p19720001883

文献信息

• Elucidation of the Vicarious Nucleophilic Substitution of Hydrogen Mechanism via Studies of Competition between Substitution of Hydrogen, Deuterium, and Fluorine
  作者：Mieczysław Ma̧kosza、Tadeusz Lemek、Andrzej Kwast、François Terrier

  DOI：10.1021/jo010590z

  日期：2002.1.1

  Relations of rates of the vicarious nucleophilic substitution of hydrogen (VNS) and S(N)Ar substitution of fluorine in 2-fluoronitrobenzenes with chloroalkyl aryl sulfone carbanions were determined from competitive experiments carried out at various concentrations of base. The observed dependence of the VNS/S(N)Ar rate ratio on the base concentration confirmed the two-step mechanism of the VNS, which

  通过在各种浓度的碱下进行的竞争性实验确定了2-氟硝基苯中的氟的亲核取代度（VNS）和氟的S（N）Ar取代率与氯烷基芳基砜碳负离子的关系。观察到的VNS / S（N）Ar比率与碱浓度的相关性证实了VNS的两步机理，该过程由可逆形成的α-氯碳阴离子的σ（H）加合物形成为硝基芳烃，然后是碱-诱导的HCl的β消除。还证明这两个过程都是限速步骤：低碱浓度下的β-消除和高碱浓度下的亲核加成。与该结论一致的发现是，VNS反应中的动力学同位素效应从4降低。2（初级KIE的典型值）到0.8（次级KIE的典型值）随碱浓度的增加而增加。还报道了我们的发现，即在我们的竞争性实验中使用的某些实验条件下，这项工作中研究的2-氟硝基苯的S（N）Ar取代受到碱催化。
• <scp>Copper‐Catalyzed</scp> Aerobic Oxidative Cleavage of Unstrained <scp>Carbon‐Carbon</scp> Bonds of 1, <scp>1‐Disubstituted</scp> Alkenes with Sulfonyl Hydrazides
  作者：Dong Yi、Linying He、Zhongyu Qi、Zhijie Zhang、Mengshun Li、Ji Lu、Jun Wei、Xi Du、Qiang Fu、Siping Wei

  DOI：10.1002/cjoc.202000549

  日期：2021.4

  carbon‐carbon bond cleavages have emerged as a powerful strategy to complement traditional ionic‐type transformations. However, carbon‐carbon cleavage reaction triggered by alkoxy radical intermediate derived from the combination of alkyl radical and dioxygen, is scarce and underdeveloped. Herein, we report alkoxy radical, which was generated from alkyl radical and dioxygen, mediated selective cleavage of unstrained

  烷氧基自由基介导的碳-碳键裂解已成为补充传统离子型转化的有力策略。然而，由烷基自由基和双氧结合产生的烷氧基自由基中间体引发的碳-碳裂解反应是稀缺的，并且发展不充分。本文中，我们报道了由烷基自由基和双氧生成的烷氧基自由基，介导了1,1-二取代烯烃的氧磺酰化作用的未应变碳-碳键的选择性裂解，可轻松获得各种有价值的β-酮砜。机理实验表明，烷氧基自由基中间体可能随后参与区域选择性β断裂反应，并进行了初步计算研究，以详细解释CC键断裂的区域选择性。值得注意的是，该策略已成功应用于构建不易获得的具有建筑吸引力的分子。
• Visible Light‐Induced Room‐Temperature Heck Reaction of Functionalized Alkyl Halides with Vinyl Arenes/Heteroarenes
  作者：Daria Kurandina、Marvin Parasram、Vladimir Gevorgyan

  DOI：10.1002/anie.201706554

  日期：2017.11.6

  The first visible light‐induced Pd‐catalyzed Heck reaction of α‐heteroatom substituted alkyl iodides and ‐bromides with vinyl arenes/heteroarenes has been developed. This transformation efficiently proceeds at room temperature and enables synthesis of valuable functionalized allylic systems, such as allylic silanes, boronates, germanes, stannanes, pivalates, phosphonates, phthalimides, and tosylates

  第一个可见光诱导的 Pd 催化的 α-杂原子取代的烷基碘化物和-溴化物与乙烯基芳烃/杂芳烃的 Heck 反应已经开发出来。这种转化在室温下有效进行，并能够从相应的α-取代甲基碘合成有价值的官能化烯丙基系统，例如烯丙基硅烷、硼酸酯、锗烷、锡烷、新戊酸酯、膦酸酯、邻苯二甲酰亚胺和甲苯磺酸酯。值得注意的是，后一种底物的合成在现有的热诱导钯催化条件下失败，这凸显了可见光对于这种转变的重要性。
• Reactions of carbanions derived from α-substituted-methyl tolyl sulfones with quinone methides as Michael acceptors
  作者：Grażyna Groszek、Sylwia Błażej、Aneta Brud、Dariusz Świerczyński、Tadeusz Lemek

  DOI：10.1016/j.tet.2005.12.040

  日期：2006.3

  Nucleophilic addition of α-halo-4-tolylsulfonyl methyl anions to quinone methides and subsequent reactions were studied. Three kinds of consecutive reaction products were isolated, depending on the substrate structures and reaction conditions. Two of them were identified as rearrangement products and one as the vicarious nucleophilic substitution (VNS) product. An unexpected 1,2-migration of the tosyl

  研究了α-卤代-4-甲苯磺酰基甲基阴离子亲核加成到醌甲基化物中和随后的反应。根据底物结构和反应条件，分离出三种连续的反应产物。其中两个被鉴定为重排产物，一个被鉴定为替代性亲核取代（VNS）产物。观察到甲苯磺酰基的意外的1，2-迁移。简要讨论了反应机理。
• Vicarious nucleophilic substitution of hydrogen versus vinylic substitution of halogen in the reactions of carbanions of halomethyl aryl sulfones with dialkyl halofumarates and halomaleates
  作者：Mieczysław Mąkosza、Shamil Nizamov、Andrzej Kwast

  DOI：10.1016/j.tet.2004.04.049

  日期：2004.6

  halomethyl aryl sulfone carbanions with dialkyl halofumarates and halomaleates results in nucleophilic substitution of hydrogen and/or of the halogen. The reaction with halofumarates proceeds via addition of the carbanions to the vinylic carbon atom connected with hydrogen, followed by base promoted β-elimination of hydrogen halide in which the halogen originates from the carbanion moiety or from the alkene

  卤代甲基芳基砜碳负离子与卤代富马酸二烷基酯和卤代马来酸酯的反应导致氢和/或卤素的亲核取代。与卤代富马酸酯的反应是通过向与氢连接的乙烯基碳原子上添加碳负离子，然后通过碱促进β-消除卤化氢而进行的，卤中的卤素源自碳负离子部分或烯烃。在卤代甲酸酯的情况下，反应通过消除加成序列进行。