1-diazo-4-(2'-methoxyphenyl)butan-2-one | 90266-01-6

• 分子结构分类: 有机化合物 - 苯类化合物 - 苯酚醚
• 英文名称: 1-diazo-4-(2'-methoxyphenyl)butan-2-one
• 英文别名: 1-Diazo-4-(2-methoxyphenyl)butan-2-one；1-diazo-4-(2-methoxyphenyl)-2-butanone；4-(2-anisyl)-α-diazo-2-butanone；1-Diazonio-4-(2-methoxyphenyl)but-1-en-2-olate；1-diazo-4-(2-methoxyphenyl)butan-2-one
• CAS: 90266-01-6
• 化学式: C₁₁H₁₂N₂O₂
• 分子量: 204.228
• InChiKey: LKUWWURDFGONHG-UHFFFAOYSA-N

计算性质

• 辛醇/水分配系数(LogP)：
  2.3
• 重原子数：
  15
• 可旋转键数：
  5
• 环数：
  1.0
• sp3杂化的碳原子比例：
  0.27
• 拓扑面积：
  28.3
• 氢给体数：
  0
• 氢受体数：
  3

反应信息

• 作为反应物：
  描述：

  1-diazo-4-(2'-methoxyphenyl)butan-2-one 在 rhodium(II) acetate dimer 、 三氟乙酸 作用下， 以 二氯甲烷 为溶剂， 反应 1.17h， 以15 mg的产率得到5-甲氧基-2-萘满酮
  参考文献：
  名称：

  Dynamic Equilibria in the Products of Intramolecular Buchner Additions of Diazoketones to Aryl Rings Bearing Methoxy Substituents

  摘要：

  Rhodium carboxylate catalyzed aromatic addition reactions of a range of diazoketones bearing methoxy-substituted aryl rings have been explored. While the existence of norcaradiene-cycloheptatriene equilibria in related compounds is well established, the aromatic addition products in this study display more complex dynamic equilibria due to conjugation with the methoxy group; the experimental evidence for this is discussed in detail. In the azulenone products 21-26 derived from p-methoxy-substituted diazoketones 14-16, the diastereomers interconvert via a spiro intermediate 39. A related mechanistic process in the azulenones 43-46 derived from the o-methoxy-substituted diazoketones 17, 18 interconverts regioisomers, explaining the conflicting reports for the regioselectivity of the cyclization of diazoketone 1. With the m-methoxy-substituted diazoketone 19, involvement of the methoxy group through a different pathway results in fragmentation of the azulenone to form the tetralone 47. With the azulenones 21-26 exclusive trapping of the norcaradiene associated with the less thermodynamically stable diastereomers in a cycloadduct with N-phenylmaleimide is observed. Due to the presence of the activating methoxy substituent on the aromatic ring, the aromatic addition reactions of the diazoketones studied were not very sensitive to the nature of the rhodium catalyst.

  DOI：

  10.1021/jo015750l
• 作为产物：
  描述：

  3-(2-甲氧基苯基）丙酸 在 氯化亚砜 作用下， 以 乙醚 、 苯 为溶剂， 生成 1-diazo-4-(2'-methoxyphenyl)butan-2-one
  参考文献：
  名称：

  氧杂环的研究：第1部分：某些芳基重氮酮的酸催化和光化学反应

  摘要：

  三氟乙酸催化的2-甲氧基苯基重氮甲基甲酮（4a），2-乙酰氧基苯基重氮甲基甲酮（4b）和3-（2-茴香基）-∞-重氮-2-丙酮（11）导致香豆烷酮（6）和3-苯并二氢吡喃酮的形成（12），而4-（2-茴香基）-∞-重氮-2-丁酮（16）提供了苯并[b] -1-氧杂-3-酮（17）和5-甲氧基-2-四氢萘酮（18）产量适中。所述重氮酮（4a，11和16）的光化学分解产生产物，这取决于底物中存在的侧链的长度。

  DOI：

  10.1016/0040-4020(89)80142-5

文献信息

• Studies on oxygen heterocycles
  作者：Somnath Ghosh、Indira Datta、Rupak Chakraborty、Tapas Kumar Das、Judhajit Sengupta(in part)、Dipak Chandra Sarkar(in part)

  DOI：10.1016/0040-4020(89)80142-5

  日期：1989.1

  Trifluoroacetic acid catalysed reaction of 2-methoxyphenyldiazometliylketone (4a), 2-acetoxyphenyldiazomethylketone (4b) and 3-(2-anisyl)-∞-diazo-2-propanone (11) leads to the formation of coumaranone (6) and 3-chromanone (12), while 4-(2-anisyl)-∞-diazo-2-butanone (16) affords benzco[b]-1-oxepan-3-one (17) and 5-methoxy-2-tetralone (18) in moderate yield. The photochemical decomposition of the said diazoketoneg

  三氟乙酸催化的2-甲氧基苯基重氮甲基甲酮（4a），2-乙酰氧基苯基重氮甲基甲酮（4b）和3-（2-茴香基）-∞-重氮-2-丙酮（11）导致香豆烷酮（6）和3-苯并二氢吡喃酮的形成（12），而4-（2-茴香基）-∞-重氮-2-丁酮（16）提供了苯并[b] -1-氧杂-3-酮（17）和5-甲氧基-2-四氢萘酮（18）产量适中。所述重氮酮（4a，11和16）的光化学分解产生产物，这取决于底物中存在的侧链的长度。
• Regiospecific synthesis of α-(phenylthio)cycloalkenones and of α-phenyl-α-(phenylthio) ketones VIA αα-addition of phenylsulphenyl chloride to ∢-diazoketones
  作者：M.Anthony McKervey、Pinit Ratananukul

  DOI：10.1016/s0040-4039(00)81343-x

  日期：1983.1

  phenylsulphenyl chloride at room temperature to furnish α-chloro-α-(phenylthio)cycloalkanones which undergo ready dehydrochlorination to α-(phenylthio)cycloalkenones when treated with triethylamine; acyclic, terminal α-diazoketones also furnish α-chloro-α-(phenylthio)adducts which are useful electrophiles in the synthesis of α-phenyl-α-(phenylthio)ketones.

  在室温下，环状α-二氮酮与苯磺酰氯反应生成α-氯-α-（苯硫基）环链烷酮，当用三乙胺处理时，α-氯代-α-（苯硫基）环烯酮易于脱氯化氢成α-（苯硫基）环烯酮。无环末端α-二氮酮还提供α-氯代-α-（苯硫基）加合物，它们在合成α-苯基-α-（苯硫基）酮中是有用的亲电子试剂。
• Efficient synthesis of bicyclo[5.3.0]decatrienones and of 2-tetralones via rhodium(<scp>II</scp>) acetate-catalysed cyclisation of α-diazoketones derived from 3-arylpropionic acids
  作者：M. Anthony McKervey、Sarbajna M. Tuladhar、M. Fiona Twohig

  DOI：10.1039/c39840000129

  日期：——

  Rhodium (II) acetate-catalysed cyclisation of α-diazoketones derived from 3-arylpropionic acid produces bicyclo[5.3.0]decatrienones or 2-tetralones depending on the substitution pattern of the aryl ring: the former products are transformed into the latter by catalytic amount of trifluoroacetic acid.

  乙酸铑（II）催化的3-芳基丙酸衍生的α-二氮酮的环化反应会生成双环[5.3.0]癸二酮或2-四氢萘酮，具体取决于芳基环的取代方式：前者通过催化转化为后者适量的三氟乙酸。
• The intramolecular Buchner reaction of aryl diazoketones. Substituent effects and scope in synthesis
  作者：Michael Kennedy、M. Anthony McKervey、Anita R. Maguire、Sarbajna M. Tuladhar、M. Fiona Twohig

  DOI：10.1039/p19900001047

  日期：——

  cyclisation occurring in all cases. When the precursor contains a meta-methoxy substituent, 2-tetralones are obtained directly. The efficient conversion of 3-phenylpropionic acid into trans-1-methylbicyclo[5.3.0]decan-2-one is also described, partial asymmetric synthesis having been realised through the use of rhodium (S)-mandelate as the cyclisation catalyst. Cyclisations of diazoketones derived from

  根据前驱体中芳基环的取代方式，由铑（II）乙酸催化的3-芳基丙酸衍生的α-二氮酮的环化反应会生成双环[5.3.0]癸二酮或2-四氢萘酮。前者的产物用三氟乙酸催化转化为后者。已经检测了具有甲基，甲氧基和乙酰氧基取代基的前体，在所有情况下均发生有效的环化。当前体含有间-甲氧基取代基时，直接获得2-四氢萘酮。还描述了将3-苯基丙酸有效转化为反-1-甲基双环[5.3.0]癸烷-2-酮，已通过使用铑实现了部分不对称合成（S-扁桃酸酯作为环化催化剂。还研究了由4-苯基丁酸和5-苯基戊酸衍生的重氮酮的环化。前者为双环[5.4.0]十一烷体系提供了新的入口，而后者通过CH的插入产生了2,3-二取代的环戊酮。讨论了稠环系统中环庚三烯-降二十碳烯平衡的各个方面。
• A reinvestigation of the Rh2(OAc)4-catalysed decomposition of 1-diazo-4-(2-methoxyphenyl)alkan-2-ones: evidence for ionic ‘ring-walk’ rearrangement in norcaradiene derivatives
  作者：Paolo Manitto、Diego Monti、Simona Zanzola、Giovanna Speranza

  DOI：10.1039/a809991j

  日期：——

  On Rh2(OAc)4-catalysed decomposition of 1-diazo-4-(2-methoxyphenyl)butan-2-one (9) and its methyl-substituted analogue (18), norcaradienones 10 and 19, respectively, were observed as the only regioisomers resulting from intramolecular cyclopropanation, indicative of attack by the metal carbene away from the methoxy group; to explain the transformation of 10 and 19 into dihydroazulenones 15 and 23, interconversion of 10 and 19 into their isomers 14 and 22 must be invoked, and an ionic ‘ring-walk’ rearrangement is suggested for such an isomerization.

  在Rh2(OAc)4催化下，1-重氮-4-(2-甲氧基苯基)丁-2-酮（9）及其甲基取代类似物（18）、降冰片二烯酮10和19分别被观察为分子内环丙烷化反应产生的唯一区域异构体，表明金属羰基远离甲氧基的攻击；为了解释10和19转化为二氢氮茚酮15和23，必须将10和19转化为其异构体14和22，并建议这种异构化发生离子“环游”重排。