2-(cyclopentylmethyl)benzofuran | 1609650-67-0

• 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: 2-(cyclopentylmethyl)benzofuran
• 英文别名: 2-(Cyclopentylmethyl)-1-benzofuran
• CAS: 1609650-67-0
• 化学式: C₁₄H₁₆O
• 分子量: 200.28
• InChiKey: YBPYCFMCXAKUCM-UHFFFAOYSA-N

物化性质

• 沸点：
  297.4±9.0 °C(predicted)
• 密度：
  1.088±0.06 g/cm3(Temp: 20 °C; Press: 760 Torr)(predicted)

计算性质

• 辛醇/水分配系数(LogP)：
  4.8
• 重原子数：
  15
• 可旋转键数：
  2
• 环数：
  3.0
• sp3杂化的碳原子比例：
  0.43
• 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：

  在 异氰酸叔丁酯 、 palladium diacetate 、 caesium carbonate 作用下， 以 乙腈 为溶剂， 反应 15.0h， 以83%的产率得到2-(cyclopentylmethyl)benzofuran
  参考文献：
  名称：

  Pd-Catalyzed Isocyanide Assisted Reductive Cyclization of 1-(2-Hydroxyphenyl)-propargyl Alcohols for 2-Alkyl/Benzyl Benzofurans and Their Useful Oxidative Derivatization

  摘要：

  An unusual Pd-catalyzed isocyanide assisted 5exo-dig reductive cyclization of 1-(2-hydroxyphenyl)-propargyl alcohols is achieved for 2-alkyl/benzyl benzofurans. The reaction features a high substrate scope, insensitivity to air, and excellent product yielding. Further, a direct metal-free C-H functionalization (azidation, alkoxylation, and hydroxylation) and selective oxidative cleavage of thus synthesized 2-benzylfurans are described for azido-, alkoxy-, hydroxyl-, amide-, and tetrazolyl adducts.

  DOI：

  10.1021/acs.joc.5b02204

文献信息

• One-pot synthesis of 2-substituted benzo[b]furans via Pd–tetraphosphine catalyzed coupling of 2-halophenols with alkynes
  作者：Rong Zhou、Wei Wang、Zhi-jie Jiang、Kun Wang、Xue-li Zheng、Hai-yan Fu、Hua Chen、Rui-xiang Li

  DOI：10.1039/c4cc00815d

  日期：——

  A catalyst composed of [Pd(η(3)-C3H5)Cl]2 and N,N,N',N'-tetra(diphenylphosphinomethyl)pyridine-2,6-diamine (L) was found to be effective for one-pot synthesis of 2-substituted benzo[b]furans from 2-halophenols and alkynes. For 2-bromo-3-hydroxypyridine, the catalyst loading could be as low as 1 ppm and the turnover number (TON) was up to 870,000.

  发现由[Pd（η（3）-C3H5）Cl] 2和N，N，N'，N'-四（二苯基膦基甲基）吡啶-2,6-二胺（L）组成的催化剂对由2-卤代酚和炔烃锅内合成2-取代的苯并[b]呋喃。对于2-溴-3-羟基吡啶，催化剂负载量可低至1 ppm，周转数（TON）高达870,000。
• Pd-Catalyzed Isocyanide Assisted Reductive Cyclization of 1-(2-Hydroxyphenyl)-propargyl Alcohols for 2-Alkyl/Benzyl Benzofurans and Their Useful Oxidative Derivatization
  作者：Manda Rajesh、Nuligonda Thirupathi、Thota Jagadeshwar Reddy、Sanjeev Kanojiya、Maddi Sridhar Reddy

  DOI：10.1021/acs.joc.5b02204

  日期：2015.12.18

  An unusual Pd-catalyzed isocyanide assisted 5exo-dig reductive cyclization of 1-(2-hydroxyphenyl)-propargyl alcohols is achieved for 2-alkyl/benzyl benzofurans. The reaction features a high substrate scope, insensitivity to air, and excellent product yielding. Further, a direct metal-free C-H functionalization (azidation, alkoxylation, and hydroxylation) and selective oxidative cleavage of thus synthesized 2-benzylfurans are described for azido-, alkoxy-, hydroxyl-, amide-, and tetrazolyl adducts.