3-methyl-2-(thiophen-2-yl)benzofuran | 1056899-30-9

• 分子结构分类: 有机化合物 - 有机杂环化合物 - 苯并呋喃
• 英文名称: 3-methyl-2-(thiophen-2-yl)benzofuran
• 英文别名: 3-Methyl-2-thiophen-2-yl-1-benzofuran
• CAS: 1056899-30-9
• 化学式: C₁₃H₁₀OS
• 分子量: 214.288
• InChiKey: HTKHVQMXNABRFK-UHFFFAOYSA-N

计算性质

• 辛醇/水分配系数(LogP)：
  4.1
• 重原子数：
  15
• 可旋转键数：
  1
• 环数：
  3.0
• sp3杂化的碳原子比例：
  0.08
• 拓扑面积：
  41.4
• 氢给体数：
  0
• 氢受体数：
  2

反应信息

• 作为产物：
  描述：

  在 三氟乙酸 作用下， 以 二氯甲烷 、 甲苯 为溶剂， 以80 mg的产率得到3-methyl-2-(thiophen-2-yl)benzofuran
  参考文献：
  名称：

  One-Pot Synthesis of Benzofurans via Palladium-Catalyzed Enolate Arylation with o-Bromophenols

  摘要：

  A one-pot synthesis of benzofurans which utilizes a palladium-catalyzed enolate arylation is described. The process demonstrates broad substrate scope and provides differentially substituted benzofurans in moderate to excellent yields. The utility of the method is further demonstrated by the synthesis of the natural product eupomatenoid 6 in three steps.

  DOI：

  10.1021/ol801510n

文献信息

• Di-<i>tert</i>-butylneopentylphosphine (DTBNpP): An Efficient Ligand in the Palladium-Catalyzed α-Arylation of Ketones
  作者：Steven M. Raders、Jessica M. Jones、Jeffrey G. Semmes、Steven P. Kelley、Robin D. Rogers、Kevin H. Shaughnessy

  DOI：10.1002/ejoc.201402474

  日期：2014.11

  palladium(II) acetate provide an efficient catalytic system for the α-arylation of ketones. Aryl bromides were coupled with ketones using 0.25–0.5 mol-% Pd(OAc)2/DTBNpP in toluene at 50 °C, whereas aryl chlorides required a higher catalyst loading (0.5–2.0 mol-%) and a higher temperature (80 °C). Coupling of 2-bromophenol with ketones using the Pd/DTBNpP system provides an efficient route for the synthesis

  二叔丁基新戊基膦 (DTBNpP) 和醋酸钯 (II) 为酮的 α-芳基化提供了有效的催化体系。在 50 °C 的甲苯中使用 0.25–0.5 mol-% Pd(OAc)2/DTBNpP 将芳基溴与酮偶联，而芳基氯需要更高的催化剂负载量 (0.5-2.0 mol-%) 和更高的温度 (80 °C) C）。使用 Pd/DTBNpP 系统将 2-溴苯酚与酮偶联为苯并呋喃的合成提供了有效途径。
• Relay Rhodium(I)/Acid Catalysis for Rapid Access to Benzo‐2 <i>H</i> ‐Pyrans and Benzofurans
  作者：Huilong Zhu、Qianqian Zhou、Na Liu、Junhao Xing、Weijun Yao、Xiaowei Dou

  DOI：10.1002/adsc.202200024

  日期：2022.3.15

  Relay rhodium(I)/Brønsted acid catalysis for tandem arylation−cyclization reaction was developed. Chemodivergent syntheses of benzo-2H-pyrans and benzofurans from propargyl alcohols and ortho-hydroxylated arylboronic acids were achieved under this relay catalysis system. An ortho-hydroxy effect on changing the chemoselectivity and reactivity was observed.

  开发了用于串联芳基化-环化反应的中继铑（I）/布朗斯台德酸催化。在该中继催化体系下，实现了由炔丙基醇和邻羟基化芳基硼酸化学分散合成苯并-2 H-吡喃和苯并呋喃。观察到邻羟基对改变化学选择性和反应性的影响。