Based on Claisen rearrangement, the double bond isomerization of O-allyl function together with the formation of O-vinyl function in one pot, and ring-closingmetathesis (RCM), various phenols were transformed into various benzofurans in good yields.
Stoermer, Justus Liebigs Annalen der Chemie, 1900, vol. 312, p. 332
作者:Stoermer
DOI:——
日期:——
BHATT, NIKHIL, S.;SHAH, ANAMIK, K.;RAVAL, RAJESH, V.;THAKOR, V. M., CURR. SCI., INDIA, 1984, 53, N 24, 1289-1290
作者:BHATT, NIKHIL, S.、SHAH, ANAMIK, K.、RAVAL, RAJESH, V.、THAKOR, V. M.
DOI:——
日期:——
Copper-Catalyzed C2 and C3 Phosphonation of Benzofuran and Benzothiophene with Trialkyl Phosphites
作者:Yufeng Wang、Yajie Yang、Kun Jie、Ling Huang、Shengmei Guo、Hu Cai
DOI:10.1002/cctc.201701361
日期:2018.2.21
A strategy for the selective phosphonation of benzofuran and benzothiophene with trialkyl phosphites was developed. In these reactions, the C−H phosphonation of benzofurans or benzothiophenes at the C2 or C3 position with trialkyl phosphites was successfully achieved without directing groups by using a copper catalyst. Additionally, the C5 phosphonation of furan was successful under the same conditions
Modular Approach to Benzofurans, 2
<i>H</i>
‐Chromenes and Benzoxepines via Claisen Rearrangement and Ring‐Closing Metathesis: Access to Phenylpropanoids
作者:Sambasivarao Kotha、Balaji U. Solanke
DOI:10.1002/asia.202200084
日期:2022.4.14
accomplished by a sequential Claisen rearrangement and ring-closing metathesis. A wide range of phenols were utilized and the synthesis of medicinally important five-, six- and seven membered oxacycles was realized. The compound prepared here are useful in medicinal chemistry for SAR studies. In addition, our work highlights the total synthesis of phenylpropanoid natural products.
苯并呋喃、2 H-色烯和苯并氧杂环庚烯的合成是通过连续的克莱森重排和闭环复分解来完成的。利用广泛的酚类化合物,实现了具有药用价值的五元、六元和七元氧杂环的合成。这里制备的化合物可用于 SAR 研究的药物化学。此外,我们的工作突出了苯丙烷类天然产物的全合成。