[EN] PREPARATION OF BENZOFURANS AND USE THEREOF AS SYNTHETIC INTERMEDIATES [FR] PRÉPARATION DE BENZOFURANES ET LEUR UTILISATION EN TANT QU'INTERMÉDIAIRES DE SYNTHÈSE
[EN] PREPARATION OF BENZOFURANS AND USE THEREOF AS SYNTHETIC INTERMEDIATES [FR] PRÉPARATION DE BENZOFURANES ET LEUR UTILISATION EN TANT QU'INTERMÉDIAIRES DE SYNTHÈSE
PREPARATION OF BENZOFURANS AND USE THEREOF AS SYNTHETIC INTERMEDIATES
申请人:Marom Ehud
公开号:US20130046103A1
公开(公告)日:2013-02-21
The present invention provides several synthetic methods for preparing N-(2-butylbenzofuran-5-yl)-N-(methylsulfonyl)methanesulfonamide, a compound of formula (3), an intermediate in the preparation of Dronedarone. The present invention further provides a process for preparing Dronedarone, comprising the steps of converting 2-butyl-5-bis(methanesulfon)-amidobenzofuran of formula (3) to Dronedarone, wherein the 2-butyl-5-bis(methanesulfon)-amidobenzofuran of formula (3) is prepared by the processes of the present invention.
Intramolecular [2 + 2] cycloadditions of ketenes to carbonyl groups. A novel synthesis of substituted benzofurans
作者:William T. Brady、Yun Seng F. Giang、Alan P. Marchand、An Hsiang Wu
DOI:10.1021/jo00391a058
日期:1987.7
BRADY, W. T.;GIANG, YUN-SENG F.;MARCHAND, A. P.;WU, AN-HSIANG, J. ORG. CHEM., 52,(1987) N 15, 3457-3461
作者:BRADY, W. T.、GIANG, YUN-SENG F.、MARCHAND, A. P.、WU, AN-HSIANG
DOI:——
日期:——
[EN] PREPARATION OF BENZOFURANS AND USE THEREOF AS SYNTHETIC INTERMEDIATES<br/>[FR] PRÉPARATION DE BENZOFURANES ET LEUR UTILISATION EN TANT QU'INTERMÉDIAIRES DE SYNTHÈSE
申请人:MAPI PHARMA HOLDINGS CYPRUS LTD
公开号:WO2011099010A1
公开(公告)日:2011-08-18
The present invention provides several synthetic methods for preparing N-(2-butylbenzofuran-5-yl)-N-(methylsulfonyl)methanesulfonamide, a compound of formula (3), an intermediate in the preparation of Dronedarone. The present invention further provides a process for preparing Dronedarone, comprising the steps of converting 2-butyl-5-bis(methanesulfon)-amidobenzofuran of formula (3) to Dronedarone, wherein the 2-butyl-5-bis(methanesulfon)-amidobenzofuran of formula (3) is prepared by the processes of the present invention.