Cascade Nucleophilic Addition−Cyclic Michael Addition of Arynes and Phenols/Anilines Bearing Ortho α,β-Unsaturated Groups: Facile Synthesis of 9-Functionalized Xanthenes/Acridines
作者:Xian Huang、Tiexin Zhang
DOI:10.1021/jo902311a
日期:2010.1.15
A facile synthesis of xanthenes and acridines based on a cascade nucleophilic addition−cyclic Michaeladdition process of arynes and phenols/anilinessubstituted with α,β-unsaturated groups at the ortho positions is described. The reaction has also been successfully extended to the synthesis of 9-spiro-xanthene and acridine derivatives with potential biochemical interest.
A Facile Approach for Synthesis of Benzofuro[2,3-<i>c</i>]pyridines<i>via</i>Intramolecular Cascade Annulations
作者:Ying Duan、Ye Wang、Dongmi Li
DOI:10.1002/cjoc.201400364
日期:2014.11
A facile synthesis of benzofuro[2,3‐c]pyridines has been achieved under mild conditions by using ammonium acetate as the nitrogen source through intramolecular cascade annulation. This reaction could efficiently construct pyridinering and furanring in one step. Moreover, the key annulation step was demonstrated through dihydrobenzofuran intermediates.
在轻度条件下,通过乙酸铵作为分子内级联环氧化氮源,可以轻松合成苯并呋喃[2,3- c ]吡啶。该反应可一步有效地构建吡啶环和呋喃环。此外,关键的环合步骤通过二氢苯并呋喃中间体进行了证明。
Dually activated Michael-Michael-acetalization cascade: facile and highly diastereoselective construction of tetrahydro-6-hydroxyl-6H-benzo[c]chromen-9-one polycyclic scaffold
作者:Jian Liu、Sai-Shuai Wen、Jing Wang、Jun-An Xiao、Shao-Jie Huang、Hua Yang
DOI:10.1016/j.tet.2015.05.014
日期:2015.7
A Michael-Michael-acetalization cascade between 4-(2-hydroxyphenyl)but-3-en-2-ones and alpha,beta-unsaturated aldehydes via a novel dual activation mode promoted by pyrrolidine was successfully established. Consequently, various novel tetrahydro-6-hydroxyl-6H-benzo[c]chromen-9-one derivatives were prepared in excellent diastereoselectivities and moderate to good yields. Further diverse modification of the resulting tricyclic scaffolds provided a facile pathway to achieve a variety of tetrahydro-6-hydroxyl-6H-benzo[c]chromen-9-one analogs. (C) 2015 Elsevier Ltd. All rights reserved.
MAKIN, S. M.;MARKINA, T. A.;BOJKO, I. I., ZH. ORGAN. XIMII, 24,(1988) N 11, S. 2419-2424
作者:MAKIN, S. M.、MARKINA, T. A.、BOJKO, I. I.
DOI:——
日期:——
Chiral recognition with a benzofuran receptor that mimics an oxyanion hole
作者:Ángel L. Fuentes de Arriba、Ángel Gómez Herrero、Omayra H. Rubio、Laura M. Monleón、Luis Simón Rubio、Victoria Alcázar、Francisca Sanz、Joaquín R. Morán
DOI:10.1039/c4ob01954g
日期:——
Chiral resolution of a novel tripodal oxyanion-hole receptor with application in amino acid derivatives enantioselective extraction.