3,5-dimethyl-2-phenylbenzofuran | 58110-77-3

• 分子结构分类: 有机化合物 - 苯丙烷和聚酮 - 2-芳基苯并呋喃类黄酮
• 英文名称: 3,5-dimethyl-2-phenylbenzofuran
• 英文别名: 3,5-Dimethyl-2-phenyl-1-benzofuran
• CAS: 58110-77-3
• 化学式: C₁₆H₁₄O
• 分子量: 222.287
• InChiKey: NIYMYGNJRGFIER-UHFFFAOYSA-N

计算性质

• 辛醇/水分配系数(LogP)：
  4.7
• 重原子数：
  17
• 可旋转键数：
  1
• 环数：
  3.0
• sp3杂化的碳原子比例：
  0.12
• 拓扑面积：
  13.1
• 氢给体数：
  0
• 氢受体数：
  1

反应信息

• 作为产物：
  描述：

  2-(2-hydroxy-5-methyl-phenyl)-1-phenyl-propan-1-one 在 三氟乙酸 作用下， 以 二氯甲烷 、 甲苯 为溶剂， 以71 mg的产率得到3,5-dimethyl-2-phenylbenzofuran
  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

• New Synthesis of 2-Aryl-3-Substituted Benzo[<i>b</i>]furans from Benzyl 2-Halophenyl Ethers
  作者：Roberto Sanz、Delia Miguel、Alberto Martínez、Antonio Pérez

  DOI：10.1021/jo060271d

  日期：2006.5.1

  Wittig rearrangement and can be trapped with electrophiles. Their reactions with carboxylic esters afford the corresponding 2-aryl-3-hydroxy-2,3-dihydrobenzo[b]furans as a mixture of diastereoisomers. Subsequent acid-catalyzed or mediated dehydration gives moderate to good overall yield of a variety of 2-aryl-3-substituted benzo[b]furans.

  用3当量的t -BuLi处理苄基2-卤代苯基醚会同时导致锂卤交换和在苄基亚甲基上的锂化。这些二价阴离子不进行维蒂希重排，并且可以被亲电试剂捕获。它们与羧酸酯的反应提供相应的2-芳基-3-羟基-2，3-二氢苯并[ b ]呋喃，为非对映异构体的混合物。随后的酸催化或介导的脱水使各种2-芳基-3-取代的苯并[ b ]呋喃具有中等至良好的总收率。
• Direct Preparation of Benzofurans from O-Arylhydroxylamines
  作者：Nicholas Tomkinson、Fanny Contiero、Kevin Jones、Edward Matts、Achim Porzelle

  DOI：10.1055/s-0029-1218273

  日期：2009.11

  Reaction of O-arylhydroxylamine hydrochlorides with either cyclic or acyclic ketones in the presence of methanesulfonic acid leads directly to the benzofuran derivative via a proposed one-pot condensation-rearrangement-cyclisation reaction sequence in good to excellent yields.

  O-芳基羟胺盐酸盐与环状或非环状酮在美克酸存在下反应，可以通过一种提议的一锅式缩合-重排-环化反应序列，直接得到苯并呋喃衍生物，产率良好到优异。
• Potassium <i>tert</i>-Butoxide-Mediated Condensation Cascade Reaction: Transition Metal-Free Synthesis of Multisubstituted Aryl Indoles and Benzofurans
  作者：Pengfei Yang、Weiyan Xu、Rongchao Wang、Min Zhang、Chunsong Xie、Xiaofei Zeng、Min Wang

  DOI：10.1021/acs.orglett.9b01093

  日期：2019.5.17

  tert-butoxide-mediated condensation reaction involving a vinyl sulfoxide intermediate. Products are obtained from N- or O-benzyl benzaldehydes using dimethyl sulfoxide as a carbon source. The methodology features a wide functional group tolerance and transition metal-free environment. Preliminary mechanistic studies suggest that the reaction involves a tandem aldol reaction/Michael addition/dehydrosulfenylation/isomerization

  基于叔丁醇介导的涉及乙烯基亚砜中间体的缩合反应，已经证明了以高收率合成有价值的二取代的2-芳基吲哚和苯并呋喃的有效且简便的方法。使用二甲基亚砜作为碳源，由N-或O-苄基苯甲醛获得产品。该方法具有宽泛的官能团耐受性和无过渡金属的环境。初步的机理研究表明，该反应涉及通过离子方案进行的串联羟醛反应/迈克尔加成反应/脱氢磺酰化/异构化序列。
• 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。
• Palladium-catalyzed nucleomethylation of alkynes for synthesis of methylated heteroaromatic compounds
  作者：Xi Yang、Gang Wang、Zhi-Shi Ye

  DOI：10.1039/d2sc03294e

  日期：——

  efficient palladium-catalyzed nucleomethylation of alkynes for the simultaneous construction of the heteroaromatic ring and methyl group. The 3-methylindoles, 3-methylbenzofurans and 4-methylisoquinolines were obtained in moderate to excellent yields. Notably, this methodology was employed as a key step for synthesis of a pregnane X receptor antagonist, zindoxifene, bazedoxifene and AFN-1252. The kinetic studies

  在此，我们公开了一种新颖且有效的钯催化炔烃核甲基化，用于同时构建杂芳环和甲基。3-甲基吲哚、3-甲基苯并呋喃和4-甲基异喹啉以中等至优异的产率获得。值得注意的是，该方法被用作合成孕烷 X 受体拮抗剂、津多昔芬、巴多昔芬和 AFN-1252 的关键步骤。动力学研究表明，还原消除可能是决定速率的步骤。