4-(2,4-Dimethoxy-phenyl)-2-methyl-but-3-yn-2-ol | 157953-17-8

• 分子结构分类: 有机化合物 - 苯类化合物 - 苯和取代衍生物
• 英文名称: 4-(2,4-Dimethoxy-phenyl)-2-methyl-but-3-yn-2-ol
• 英文别名: 4-(2,4-Dimethoxyphenyl)-2-methylbut-3-yn-2-ol
• CAS: 157953-17-8
• 化学式: C₁₃H₁₆O₃
• 分子量: 220.268
• InChiKey: JUOUSOLRGUBTLZ-UHFFFAOYSA-N

计算性质

• 辛醇/水分配系数(LogP)：
  2.5
• 重原子数：
  16
• 可旋转键数：
  4
• 环数：
  1.0
• sp3杂化的碳原子比例：
  0.38
• 拓扑面积：
  38.7
• 氢给体数：
  1
• 氢受体数：
  3

反应信息

• 作为反应物：
  描述：

  4-(2,4-Dimethoxy-phenyl)-2-methyl-but-3-yn-2-ol 在 镍 氢气 、 对甲苯磺酸 作用下， 以 甲醇 、 甲苯 为溶剂， 生成 4-(γ,γ-Dimethylallyl)-o-dimethylresorcinol
  参考文献：
  名称：

  Regioselective Prenylation of Phenols by Palladium Catalyst: Syntheses of Prenylphenols and Chromans

  摘要：

  The palladium-catalyzed coupling reaction of iodophenols (1) with 2-methyl-3-butyn-2-ol gave alkynylphenols (2). Catalytic hydrogenation of 2 over Raney nickel and the subsequent dehydration of the resultant alkylphenols (3) gave regioselectively the desired prenylphenols (4). Dehydration of alkylphenols (3f-h) gave chromans (7).

  DOI：

  10.3987/com-94-6744
• 作为产物：
  描述：

  2,4-二甲氧基碘苯 、 2-甲基-3-丁炔-2-醇 在 copper(l) iodide 、 三乙胺 、 三苯基膦 、 palladium dichloride 作用下， 以 N,N-二甲基甲酰胺 为溶剂， 反应 0.5h， 以90%的产率得到4-(2,4-Dimethoxy-phenyl)-2-methyl-but-3-yn-2-ol
  参考文献：
  名称：

  Regioselective Prenylation of Phenols by Palladium Catalyst: Syntheses of Prenylphenols and Chromans

  摘要：

  The palladium-catalyzed coupling reaction of iodophenols (1) with 2-methyl-3-butyn-2-ol gave alkynylphenols (2). Catalytic hydrogenation of 2 over Raney nickel and the subsequent dehydration of the resultant alkylphenols (3) gave regioselectively the desired prenylphenols (4). Dehydration of alkylphenols (3f-h) gave chromans (7).

  DOI：

  10.3987/com-94-6744

文献信息

• Dulog, Lothar; Koerner, Bernd; Heinze, Juergen, Liebigs Annalen, 1995, # 9, p. 1663 - 1672
  作者：Dulog, Lothar、Koerner, Bernd、Heinze, Juergen、Yang, Jianjun

  DOI：——

  日期：——
• Electrophilic Cyclization of 2-Chalcogenealkynylanisoles: Versatile Access to 2-Chalcogen-benzo[<i>b</i>]furans
  作者：Flávia Manarin、Juliano A. Roehrs、Rafaela Mozzaquatro Gay、Ricardo Brandão、Paulo H. Menezes、Cristina W. Nogueira、Gilson Zeni

  DOI：10.1021/jo802736e

  日期：2009.3.6

  An efficient synthesis of 2-chalcogen-3-substituted-benzo[b]furan compounds has been accomplished via electrophilic cyclization reaction of 2-chalcogenealkynyl anisoles using I-2, ICl, Br-2 and PhSeBr as electrophile sources. The product distributions were strongly dependent on the nature of substituents in the aromatic ring of anisole and on the chalcogen atom directly bonded to the triple bond. The 2-chalcogen-3-iodo-benzo[b]furans obtained smoothly underwent conversion to more complex structures of benzo[b]furan derivatives via palladium- or copper-catalyzed cross-coupling reaction with thiols, diphenyl diselenides, and zincates.