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] LYSOPHOSPHATIDIC ACID RECEPTOR ANTAGONISTS AND PREPARATION METHOD THEREFOR<br/>[FR] ANTAGONISTES DU RÉCEPTEUR DE L'ACIDE LYSOPHOSPHATIDIQUE ET PROCÉDÉ DE PRÉPARATION ASSOCIÉ<br/>[ZH] 溶血磷脂酸受体拮抗剂及其制备方法
[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.
Rhodium-Catalyzed Borylation of Aryl 2-Pyridyl Ethers through Cleavage of the Carbon–Oxygen Bond: Borylative Removal of the Directing Group
作者:Hirotaka Kinuta、Mamoru Tobisu、Naoto Chatani
DOI:10.1021/ja511622e
日期:2015.2.4
diboron reagent results in the formation of arylboronic acid derivatives via activation of the C(aryl)-O bonds. The straightforward synthesis of 1,2-disubstituted arenes was enabled through catalytic ortho C-H bond functionalization directed by the 2-pyridyloxy group followed by substitution of this group with a boryl group. Several control experiments revealed that the presence of a sp(2) nitrogen
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.