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4,5-dimethoxybenzyne | 54632-05-2

中文名称
——
中文别名
——
英文名称
4,5-dimethoxybenzyne
英文别名
4,5-Dimethoxy-dehydrobenzol;2,3-Dimethoxycyclohexa-1,3-dien-5-yne;2,3-dimethoxycyclohexa-1,3-dien-5-yne
4,5-dimethoxybenzyne化学式
CAS
54632-05-2
化学式
C8H8O2
mdl
——
分子量
136.15
InChiKey
YXMYUWVMKBRAAL-UHFFFAOYSA-N
BEILSTEIN
——
EINECS
——
  • 物化性质
  • 计算性质
  • ADMET
  • 安全信息
  • SDS
  • 制备方法与用途
  • 上下游信息
  • 反应信息
  • 文献信息
  • 表征谱图
  • 同类化合物
  • 相关功能分类
  • 相关结构分类

物化性质

  • 沸点:
    248.0±40.0 °C(Predicted)
  • 密度:
    1.09±0.1 g/cm3(Predicted)

计算性质

  • 辛醇/水分配系数(LogP):
    1.4
  • 重原子数:
    10
  • 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:
    18.5
  • 氢给体数:
    0
  • 氢受体数:
    2

SDS

SDS:a7debf2e8e2dd3820879a1fed8e25e25
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反应信息

  • 作为反应物:
    描述:
    4,5-dimethoxybenzyne 在 1,2-bis(bis(3,5-bis(trifluoromethyl)phenyl)phosphanyl)benzene 、 copper diacetate 、 lithium tert-butoxide 作用下, 以 1,2-二氯乙烷 为溶剂, 反应 4.0h, 生成 4-{(1SR,2RS,4SR)-6,7-dimethoxy-1,2,3,4-tetrahydro-1,4-epoxynaphthalen-2-yl}morpholine
    参考文献:
    名称:
    Copper-Catalyzed Enantioselective Formal Hydroamination of Oxa- and Azabicyclic Alkenes with Hydrosilanes and Hydroxylamines
    摘要:
    A CuCl/(R,R)-Ph-BPE-catalyzed enantioselective formal hydroamination of oxa- and azabicyclic alkenes with polymethylhydrosiloxane (PMHS) and O-benzoylhydroxylamines has been developed. The efficient and stereoselective net addition of hydrogen and nitrogen atoms provides the corresponding optically active oxa- and azanorbornenyl- and -norbomanylamines in good yields and good enantiomeric ratios.
    DOI:
    10.1021/ol5003219
  • 作为产物:
    描述:
    参考文献:
    名称:
    乙酸2-硒代氧-2- H-吡啶-1-基酯与苯炔的反应:苯并[ b ]硒代[2,3- b ]吡啶的简便途径
    摘要:
    苯炔及其3,4,5,6-四苯基,3-和4-甲基,3-甲氧基和4,5-二氟衍生物与乙酸2-硒代氧-2 H-吡啶-1-基酯4a-e反应得到适量收率的苯并[ b ]硒代[2,3- b ]吡啶10-15。苯并炔是通过以下一种或多种方法生成的:用硝酸异戊酯将邻氨基苯甲酸5a-g重氮化;将5a-g邻氨基苯甲酸重氮化。2-重氮碘苯甲酸盐酸盐的温和热分解6a-d处理(苯基)[ o-三氟甲磺酸-((三甲基甲硅烷基)苯基]三氟甲磺酸鎓盐(7);氟化铯制备2-三甲基甲硅烷基苯基三氟甲磺酸酯8a-c。在所有反应中,还获得了相应的2-(甲基硒烯基)吡啶16a-d,表明这些反应可能涉及通过SET(单电子转移)将硒添加到苯炔中。
    DOI:
    10.1002/jhet.5570410103
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文献信息

  • Trapping σ-Alkyl-Palladium(II) Intermediates with Arynes Encompassing Intramolecular C−H Activation: Spirobiaryls through Pd-Catalyzed Cascade Reactions
    作者:Marta Pérez-Gómez、José-Antonio García-López
    DOI:10.1002/anie.201607976
    日期:2016.11.7
    A palladium‐catalyzed cascade reaction based on the trapping of transient alkyl–PdII intermediates with arynes encompassing a C−H activation step has been developed. This synthetic pathway gives rise to hetero‐spirocyclic scaffolds containing a biaryl motif, and opens up new synthetic strategies in the design of cascade reactions since it gathers several aspects of Pd chemistry, i.e., intra‐ and intermolecular
    已经开发了一种基于钯的催化级联反应,该反应基于捕获带有CH活化步骤的芳烃的瞬态烷基-Pd II中间体。这种合成途径产生了含有联芳基的杂螺环骨架,并且由于其收集了Pd化学的多个方面,即不饱和物质C–H的分子内和分子间碳pal合,从而在级联反应的设计中开辟了新的合成策略。激活和CC耦合过程。
  • Iridium-Catalyzed Asymmetric Ring-Opening of Oxabenzonorbornadienes with Phenols
    作者:Hanchao Cheng、Dingqiao Yang
    DOI:10.1021/jo3018507
    日期:2012.11.2
    A novel iridium-catalyzed asymmetric ring-opening (ARO) reaction of oxabenzonorbornadienes with a variety of phenols was reported, which afforded the corresponding trans-2-phenoxy-1,2-dihydronaphthalen-1-ol products in high yields with moderate to excellent enantioselectivities (up to 98% ee) under mild conditions. The trans products are formed via the enantioselective cleavage of a bridgehead carbon–oxygen
    报道了一种新颖的铱催化的草酰苯并降冰片二烯与多种酚的不对称开环(ARO)反应,可高产率提供相应的反式-2-苯氧基-1,2-二氢萘-1-醇产物,中等至极好在温和条件下的对映选择性(高达98%ee)。反式产物通过一个桥头碳-氧键的对映选择性裂解而形成的1其后是S Ñ由酚类2亲核攻击。还研究了各种双膦配体,Ag(I)盐,卤化铵,碱和溶剂对反应收率和对映选择性的影响。产品2a的反式配置通过X射线晶体结构分析确认。提出了本催化反应的可能机理。
  • Preparation of Benzothiopyrano[2,3-b]- indoles by the Reaction of 1,3-Dihydro- indole-2-thiones with Certain Dienophiles
    作者:Edward R. Biehl、Sukanta Kamila
    DOI:10.3987/com-04-10219
    日期:——
    Benzothiopyrano[2,3-b]indoles were prepared by the cyclization of 1,3-dihydroindole-2-thiones with various dienophiles. The 1,3-dihydroindole-2-thiones were readily synthesized by the reaction of oxindole with P 2 S 5 followed by a piperidine-mediated condensation of the resulting thioindole with a suitable aromatic aldehyde.
    苯并噻吩并[2,3-b]吲哚通过1,3-二氢吲哚-2-硫酮与各种亲双烯体的环化制备。1,3-二氢吲哚-2-硫酮很容易通过羟吲哚与P 2 S 5 的反应合成,然后由哌啶介导的所得硫代吲哚与合适的芳族醛缩合。
  • Carbometalated Complexes Possessing Tripodal Pseudo-<i>C</i><sub>3</sub>-Symmetric Triptycene-Based Ligands
    作者:Ilya Kisets、Dmitri Gelman
    DOI:10.1021/acs.organomet.7b00907
    日期:2018.2.26
    practical synthesis of 1,8,13-tribromotriptycene. Reaction with palladium leads to the formation of new pseudo-C3-symmetric carbometalated complexes: namely, Pd(P3T1)Cl and Pd(P3T2)Cl. The catalytic activity of the new ligands and complexes was tested in the palladium-catalyzed chemoselective transfer hydrogenation of α,β-unsaturated ketones.
    新型的空气稳定的三脚架三膦配体1,8,13-三(二异丙基膦基)-2,3-二甲氧基三蝶烯(P 3 T1)和1,8,13-三(二苯基膦基)-2,3-二甲氧基三蝶烯(P 3 T2)介绍和讨论。它们的合成是基于1,8,13-三溴三并茂的首次实用合成。与钯的反应导致新的伪C 3对称碳金属络合物的形成:即Pd(P 3 T1)Cl和Pd(P 3 T2)Cl。在钯催化的α,β-不饱和酮的化学选择性转移氢化中测试了新的配体和配合物的催化活性。
  • A triptycene-based polymer of intrinsic microposity that displays enhanced surface area and hydrogen adsorption
    作者:Bader S. Ghanem、Kadhum J. Msayib、Neil B. McKeown、Kenneth D. M. Harris、Zhigang Pan、Peter M. Budd、Anna Butler、James Selbie、David Book、Allan Walton
    DOI:10.1039/b614214a
    日期:——
    A novel triptycene-based polymer of intrinsic microporosity (Trip-PIM) displays enhanced surface area (1065 m2 g−1) and reversibly adsorbs 1.65% hydrogen by mass at 1 bar/77 K and 2.71% at 10 bar/77 K.
    一种新型基于三联苯的固有微孔聚合物(Trip-PIM)具有更大的表面积(1065 m2 g-1),在1 bar/77 K和10 bar/77 K的压力下可分别可逆吸附1.65%和2.71%的氢气。
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