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2-Methylbenzocyclobuten-1(2H)-one | 68913-17-7

中文名称
——
中文别名
——
英文名称
2-Methylbenzocyclobuten-1(2H)-one
英文别名
2-methylbenzocyclobutenone;8-Methylbicyclo[4.2.0]octa-1,3,5-trien-7-one
2-Methylbenzocyclobuten-1(2H)-one化学式
CAS
68913-17-7
化学式
C9H8O
mdl
——
分子量
132.162
InChiKey
NASKFLAPVWUAGV-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

计算性质

  • 辛醇/水分配系数(LogP):
    1.7
  • 重原子数:
    10
  • 可旋转键数:
    0
  • 环数:
    2.0
  • sp3杂化的碳原子比例:
    0.22
  • 拓扑面积:
    17.1
  • 氢给体数:
    0
  • 氢受体数:
    1

SDS

SDS:4f94dcc728aba1dffc6e543f5bc85c8e
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上下游信息

  • 下游产品
    中文名称 英文名称 CAS号 化学式 分子量

反应信息

  • 作为反应物:
    描述:
    2-Methylbenzocyclobuten-1(2H)-one 在 chloro(1,5-cyclooctadiene)rhodium(I) dimer 、 1,3-双(二苯基膦)丙烷 作用下, 以 1,4-二氧六环 为溶剂, 反应 48.0h, 以73%的产率得到1-茚酮
    参考文献:
    名称:
    Rh-catalyzed reagent-free ring expansion of cyclobutenones and benzocyclobutenones
    摘要:
    报道了一种无试剂的Rh催化的环扩张反应,通过对环丁酮和苯并环丁酮进行C-C键裂解。
    DOI:
    10.1039/c5sc01875g
  • 作为产物:
    描述:
    2,2'-亚甲基双-(4-甲基-6-叔丁基苯酚)aluminum oxide9-噻吨酮N,N-二异丙基乙胺亚磷酸二乙酯 作用下, 以 二氯甲烷甲苯 为溶剂, 20.0~150.0 ℃ 、4.67 kPa 条件下, 反应 115.0h, 生成 2-Methylbenzocyclobuten-1(2H)-one
    参考文献:
    名称:
    Synthetic Approach to Benzocyclobutenones Using Visible Light and a Phosphonate Auxiliary
    摘要:
    Reported herein is a two-step procedure to synthesize benzocyclobutenones from (o-alkylbenzoyl)-phosphonates. It consists of a visible-light-driven cyclization reaction forming phosphonate-substituted benzocyclobutenols and subsequent elimination reaction of the H-phosphonate, which assumes a key role as the recyclable auxiliary. A wide variety of functionalized benzocyclobutenones, which include those difficult to synthesize by conventional methods, are efficiently synthesized.
    DOI:
    10.1021/acs.orglett.8b00160
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文献信息

  • Rh<sup>I</sup>-Catalyzed Benzo/[7+1] Cycloaddition of Cyclopropyl-Benzocyclobutenes and CO by Merging Thermal and Metal-Catalyzed CC Bond Cleavages
    作者:Xu-Fei Fu、Yu Xiang、Zhi-Xiang Yu
    DOI:10.1002/chem.201405712
    日期:2015.3.9
    A Rh‐catalyzed benzo/[7+1] cycloaddition of cyclopropyl‐benzocyclobutenes (CP‐BCBs) and CO to benzocyclooctenones has been developed. In this reaction, CP‐BCB acts as a benzo/7‐C synthon and the reaction involves two CC bond cleavages: a thermal electrocyclic ring‐opening of the four‐membered ring in CP‐BCB and a Rh‐catalyzed CC cleavage of the cyclopropane ring.
    已开发出Rh催化的环丙基-苯并环丁烯(CP-BCBs)和CO向苯并环辛烯酮的苯并/ [7 + 1]环加成反应。在该反应中,CP-BCB充当苯并/ 7-C合成子,该反应涉及两个CC键裂解:CP-BCB中四元环的热电环开环和Rh催化的C C环丙烷环的裂解。
  • Copper‐Catalyzed Intermolecular Heck‐Like Coupling of Cyclobutanone Oximes Initiated by Selective C−C Bond Cleavage
    作者:Binlin Zhao、Zhuangzhi Shi
    DOI:10.1002/anie.201707181
    日期:2017.10.2
    The first example of intermolecular olefination of cyclobutanone oximes with alkenes via selective C−C bond cleavage leading to the synthesis of nitriles in the presence of a cheap copper catalyst is reported. The procedure is distinguished by mild and safe reaction conditions that avoid ligand, oxidant, base, or toxic cyanide salt. A wide scope of cyclobutanones and olefin coupling components can
    据报道,第一个例子是在廉价的铜催化剂存在下,通过选择性的C-C键断裂,环丁酮肟与烯烃进行分子间烯化反应,从而导致腈的合成。该过程的特点是反应条件温和且安全,避免了配体,氧化剂,碱或有毒氰化物盐的存在。在不影响效率和可扩展性的情况下,可以使用多种环丁酮和烯烃偶联组分。还发现了该偶联反应的替代可见光驱动的光氧化还原过程。
  • X-ray-Induced Transformation of <i>o</i>-Vinylbenzaldehyde and 2-Methylbenzocyclobutenone to an <i>o</i>-Quinoid Ketene and Its Radical Cation
    作者:Krzysztof Huben、Zhendong Zhu、Thomas Bally、Jerzy Gebicki
    DOI:10.1021/ja964243w
    日期:1997.3.1
    Upon ionization in argon matrices by X-irradiation, o-vinylbenzaldehyde (VBA) partially undergoes transfer of the formyl hydrogen atom to the vinylic CH2 group, thereby forming a quinoketene radical cation of the type previously described (Bally, T.; Michalak, J. J. Photochem. Photobiol. A: Chem. 1992, 69, 185). This process does not manifest itself clearly in the optical spectra because the transitions
    通过 X 辐射在氩气基质中电离后,邻乙烯基苯甲醛 (VBA) 将甲酰基氢原子部分转移到乙烯基 CH2 基团,从而形成前述类型的喹烯酮自由基阳离子 (Bally, T.; Michalak, JJ Photochem. Photobiol. A:Chem. 1992, 69, 185)。这个过程在光谱中并没有清楚地表现出来,因为 quinoketene 阳离子的跃迁与 VBA•+ 的强得多的跃迁重合,​​并且大部分都被那些遮蔽了。然而,红外光谱清楚地表明重排发生得相当有效。他们还表明,在 X 辐射过程中,互变异构化的阳离子以良好的产率被再中和成 VBA 的喹诺酮互变异构体。喹烯酮及其自由基阳离子独立地从 2-甲基苯并环丁烯酮中获得,2-甲基苯并环丁烯酮在光解和/或电离时自发开环。自由基阳离子的光谱基于CASPT2校准...
  • Rhodium(<scp>i</scp>)-catalysed skeletal reorganisation of benzofused spiro[3.3]heptanes via consecutive carbon–carbon bond cleavage
    作者:Takanori Matsuda、Itaru Yuihara、Kazuki Kondo
    DOI:10.1039/c6ob01344a
    日期:——
    Skeletal reorganisation of benzofused spiro[3.3]heptanes has been achieved using rhodium(I) catalysts. The reaction of benzofused 2-(2-pyridylmethylene)spiro[3.3]heptanes proceeds via sequential C–C bond oxidative addition and β-carbon elimination. On the other hand, benzofused spiro[3.3]heptan-2-ols undergo two consecutive β-carbon elimination processes. In both cases, substituted naphthalenes are
    使用铑(I)催化剂已经实现了苯并稠合螺[3.3]庚烷的骨架重组。苯并稠合的2-(2-吡啶基亚甲基)螺[3.3]庚烷的反应通过顺序的CC键氧化加成和β-碳消除来进行。另一方面,苯并稠合的螺[3.3]庚-2-醇经历了两个连续的β-碳消除过程。在两种情况下,均获得了取代的萘。
  • Approaches to pseudoindene
    作者:Margaret.A. O'leary、Dieter Wege
    DOI:10.1016/s0040-4020(01)97701-4
    日期:1981.1
    The title carbenes, which in principle can all serve as precursors to the reactive hydrocarbon pseudoindene, have been generated by the photolysis of the sodium salts of the tosylhydrazones of (a) benzocyclobutene-1-carboxaldehyde, (b) 2-methylbenzocyclobutenone and (c) o-formylstyrene. Indene was formed in reactions (a) and (c): in the former case deuterium labelling experiments suggest a ring expansion
    标题碳酰苯原则上可以全部用作反应性烃假茚的前体,是通过光解(a)苯并环丁烯-1-羧醛,(b)2-甲基苯并环丁烯酮和(c )o-甲酰基苯乙烯。茚在反应(a)和(c)中形成:在前一种情况下,氘标记实验表明是扩环机理,而不是假茚满中间体。在后一种情况下,氘标记和捕集实验涉及对称的异茚中间体,该中间体可以通过假茚或邻苯乙烯基卡宾的直接电环闭合而产生。
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