Palladium-Catalyzed α-Arylation of Aryloxyketones for the Synthesis of 2,3-Disubstituted Benzofurans
作者:Jin Ho Lee、Myungock Kim、Ikyon Kim
DOI:10.1021/jo500885w
日期:2014.7.3
A highly efficient palladium-catalyzed α-arylation of aryloxyketones has been developed, allowing for facile installation of various (hetero)aryl groups at C2 position in good to excellent yields. Subsequent cyclodehydration of the resulting α-arylated aryloxyketones provided rapid access to diverse 2,3-disubstitured benzofurans.
SYNTHESIS OF NOVEL ANALOGS OF DIPTOINDONESIN G, COMPOUNDS FORMED THEREBY, AND PHARMACEUTICAL COMPOSITIONS CONTAINING THEM
申请人:Wisconsin Alumni Research Foundation
公开号:US20180065945A1
公开(公告)日:2018-03-08
Disclosed are unnatural analogs of Diptoindonesin G, methods to make the analogs, pharmaceutical compositions containing the analogs, and methods of using the analogs to inhibit neoplastic cell growth.
Abstract Various polysubstituted benzofurans were reduced by using triethylsilane in trifluoracetic acid. 2,3-Dihydrobenzofurans or bibenzyl compounds were obtained in high yields, depending on the nature of the substituents at C2 and on the benzene ring of the core structure. A p-anisole substituent at C2 of benzofurans always led to the corresponding bibenzyls. Publication History Received: 09 September
A concise and efficient total synthetic route of active stilbene dimer (±)-<i>ε</i>-viniferin
作者:Qibin Zhu、Binhao Teng、Ying Chen、Fubao Su、Yanqiu Li、Qingyun Yang、Chunsuo Yao
DOI:10.1039/d2ra01385a
日期:——
concise and efficient procedure for the total synthesis of natural stilbene dimer (±)-ε-viniferin was accomplished with high overall yield. Demethylation of the key intermediatemethyl 3-arylbenzofuran-4-carboxylate was achieved successfully through bromination followed by BBr3-or BCl3/TBAI-mediated ether cleavage reaction. Pd/C and bromobenzene-catalyzed MOM ether cleavage was successfully carried out to