Facile Assembly of Fused Benzo[4,5]furo Heterocycles
摘要:
A concise synthesis of fused benzo[4,5]furo heterocycles 18 has been developed. Chemo/regioselective Suzuki coupling between 1,2-dihaloarene 17 and alpha-hydroxyphenylboronic acid or ester 20 gives biaryl phenol 19, which then undergoes copper(I) thiophene-2-carboxylate (CuTC)-mediated intramolecular cyclization to afford 18 in good overall yield. This method has broad substrate scope and allows facile assembly of a wide variety of benzo[4,5]furo heterocycles.
Sulfur-mediated annulation of 1,2-phenylenediamines towards benzofuro- and benzothieno-quinoxalines
作者:Loan T. Tran、Tuan H. Ho、Nhu T. A. Phan、Tung T. Nguyen、Nam T. S. Phan
DOI:10.1039/d0ob00887g
日期:——
Oxidation of sp3 C–H bonds in acetophenones is exploited to annulate with 1,2-phenylenediamines.
在这个句子中,sp3 C-H键的氧化被利用来与1,2-苯二胺进行环化。
Facile assembly of fused benzofuro-heterocycles
申请人:Fitzgerald Anne E.
公开号:US20090076268A1
公开(公告)日:2009-03-19
This invention concerns the synthesis of polycyclic structural components of pharmacological compounds, including the synthesis of fused benzofuro-heterocycles, through selective palladium-catalyzed cross-coupling and intramolecular cyclization.
[EN] FACILE ASSEMBLY OF FUSED BENZOFURO-HETEROCYCLES<br/>[FR] ASSEMBLAGE FACILE DE BENZOFURO-HÉTÉROCYCLES FUSIONNÉS
申请人:JANSSEN PHARMACEUTICA NV
公开号:WO2009035668A1
公开(公告)日:2009-03-19
This invention concerns the synthesis of polycyclic structural components of pharmacological compounds, including the synthesis of fused benzofuro-heterocycles, through selective palladium-catalyzed cross-coupling and intramolecular cyclization.
Facile Assembly of Fused Benzo[4,5]furo Heterocycles
作者:Jing Liu、Anne E. Fitzgerald、Neelakandha S. Mani
DOI:10.1021/jo8000595
日期:2008.4.1
A concise synthesis of fused benzo[4,5]furo heterocycles 18 has been developed. Chemo/regioselective Suzuki coupling between 1,2-dihaloarene 17 and alpha-hydroxyphenylboronic acid or ester 20 gives biaryl phenol 19, which then undergoes copper(I) thiophene-2-carboxylate (CuTC)-mediated intramolecular cyclization to afford 18 in good overall yield. This method has broad substrate scope and allows facile assembly of a wide variety of benzo[4,5]furo heterocycles.