6-氯-3-甲基-2,3-二氢色烯-4-酮 | 57646-03-4

• 分子结构分类: 有机化合物 - 有机杂环化合物 - 苯并吡喃
• 中文名称: 6-氯-3-甲基-2,3-二氢色烯-4-酮
• 英文名称: 6-chloro-3-methyl-chroman-4-one
• 英文别名: 6-Chloro-3-methylchroman-4-one；6-chloro-3-methyl-2,3-dihydrochromen-4-one
• CAS: 57646-03-4
• 化学式: C₁₀H₉ClO₂
• 分子量: 196.633
• InChiKey: XZYWJEGILOPDJG-UHFFFAOYSA-N

物化性质

• 沸点：
  85-95 °C(Press: 0.05 Torr)
• 密度：
  1.262±0.06 g/cm3(Predicted)

计算性质

• 辛醇/水分配系数(LogP)：
  2.6
• 重原子数：
  13
• 可旋转键数：
  0
• 环数：
  2.0
• sp3杂化的碳原子比例：
  0.3
• 拓扑面积：
  26.3
• 氢给体数：
  0
• 氢受体数：
  2

反应信息

• 作为反应物：
  描述：

  6-氯-3-甲基-2,3-二氢色烯-4-酮 在 sodium hydroxide 、 氯化亚砜 、 N,N-二甲基甲酰胺 作用下， 以 1,4-二氧六环 为溶剂， 反应 8.0h， 生成 6-Chloro-3-chloromethyl-3-methyl-chroman-4-one
  参考文献：
  名称：

  Hydroxymethylation of 2-Hydroxypropiophenones in Aqueous Medium: Synthesis of 3-Hydroxymethyl-3-methyl-4-chromanones and Their Conversion to 3-Methyl-4-chromanone-3-acetic Acids

  摘要：

  o-羟基丙基苯酮（1a）与水相甲醛在氢氧化钠溶液中反应，生成了单羟甲基化的化合物2a和/或双羟甲基化的衍生物3a，以及3-甲基-4-氢化色酮（4a）和/或3-甲基-3-羟甲基-4-氢化色酮（5a），具体生成物的比例取决于所用试剂的比例。文中也展示了从1a形成5a的机制。化合物5a及其6-氯衍生物5b（同样从5-氯-2-羟基丙基苯酮（1b）制备）通过标准程序转化为相应的3-甲基-4-氢化色酮-3-乙酸（8a、b）。

  DOI：

  10.1055/s-1985-31368
• 作为产物：
  描述：

  ethyl α-p-chlorophenoxymethylacrylate 在 palladium on activated charcoal 甲烷磺酸 、 氢气 作用下， 以 甲苯 、 乙腈 为溶剂， 反应 4.0h， 生成 6-氯-3-甲基-2,3-二氢色烯-4-酮
  参考文献：
  名称：

  Access to racemic and enantioenriched 3-methyl-4-chromanones: catalysed asymmetric protonation of corresponding enolic species as the key step

  摘要：

  Bronsted acids induced the intramolecular cyclisation of 3-aryloxypropanoic esters affording 3-methyl-4-chromanones, which have been transformed into the corresponding racemic benzyl beta-oxoesters. These latter esters, in the presence of hydrogen and catalytic amounts of both palladium and (endo, endo) aminobomeol, led to optically active chromanones with up to 75% ee through a deprotection-decarboxylation-protonation cascade reaction. (C) 2003 Elsevier Ltd. All rights reserved.

  DOI：

  10.1016/j.tet.2003.09.095

文献信息

• N-Heterocyclic Carbene-Catalyzed Hydroacylation of Unactivated Double Bonds
  作者：Keiichi Hirano、Akkattu T. Biju、Isabel Piel、Frank Glorius

  DOI：10.1021/ja906361g

  日期：2009.10.14

  An intramolecular N-heterocyclic carbene (NHC)-catalyzed hydroacylation of unactivated double bonds is reported. Systematic variation of the catalyst structure revealed an N-mesitylthiazolylidene annulated with a seven-membered ring to be especially reactive. This NHC enables a unique C-C bond-forming reaction to afford substituted chroman-4-ones in moderate to excellent yields, even ones containing all-carbon quaternary centers.
• BARLOCCO, D.;CIGNARELLA, G.;CURZU, M. M., SYNTHESIS, BRD, 1985, N 9, 876-878
  作者：BARLOCCO, D.、CIGNARELLA, G.、CURZU, M. M.

  DOI：——

  日期：——
• Hydroxymethylation of 2-Hydroxypropiophenones in Aqueous Medium: Synthesis of 3-Hydroxymethyl-3-methyl-4-chromanones and Their Conversion to 3-Methyl-4-chromanone-3-acetic Acids
  作者：Daniela Barlocco、Giorgio Cignarella、Maria Michela Curzu

  DOI：10.1055/s-1985-31368

  日期：——

  Reaction of o-hydroxypropiophenone (1a) with aqueous formaldehyde in sodium hydroxide solution led to the mono-hydroxymethylated 2a and/or the bis-hydroxymethylated derivative 3a, as well as to 3-methyl-4-chromanone (4a) and/or 3-methyl-3-hydroxymethyl-4-chromanone (5a), according to the ratio of the reagents employed. The mechanism of formation of 5a from 1a was also demonstrated. Compound 5a and its 6-chloro derivative 5b, similarly prepared from 5-chloro-2-hydroxypropiophenone (1b), were converted by standard procedure to the corresponding 3-methyl-4-chromanone-3-acetic acids 8a, b.

  o-羟基丙基苯酮（1a）与水相甲醛在氢氧化钠溶液中反应，生成了单羟甲基化的化合物2a和/或双羟甲基化的衍生物3a，以及3-甲基-4-氢化色酮（4a）和/或3-甲基-3-羟甲基-4-氢化色酮（5a），具体生成物的比例取决于所用试剂的比例。文中也展示了从1a形成5a的机制。化合物5a及其6-氯衍生物5b（同样从5-氯-2-羟基丙基苯酮（1b）制备）通过标准程序转化为相应的3-甲基-4-氢化色酮-3-乙酸（8a、b）。
• Access to racemic and enantioenriched 3-methyl-4-chromanones: catalysed asymmetric protonation of corresponding enolic species as the key step
  作者：Olivier Roy、François Loiseau、Abdelkhalek Riahi、Françoise Hénin、Jacques Muzart

  DOI：10.1016/j.tet.2003.09.095

  日期：2003.11

  Bronsted acids induced the intramolecular cyclisation of 3-aryloxypropanoic esters affording 3-methyl-4-chromanones, which have been transformed into the corresponding racemic benzyl beta-oxoesters. These latter esters, in the presence of hydrogen and catalytic amounts of both palladium and (endo, endo) aminobomeol, led to optically active chromanones with up to 75% ee through a deprotection-decarboxylation-protonation cascade reaction. (C) 2003 Elsevier Ltd. All rights reserved.