On February 21, 2013, Marom, Ehud; Mizhiritskii, Michael; Rubnov, Shai published a patent.Product Details of 60770-67-4 The title of the patent was Preparation of benzofurans and use thereof as synthetic intermediates. And the patent contained the following:
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. The experimental process involved the reaction of 5-Iodobenzofuran(cas: 60770-67-4).Product Details of 60770-67-4
The Article related to preparation dronedarone benzofuran, Heterocyclic Compounds (One Hetero Atom): Areno- and Diarenofurans and other aspects.Product Details of 60770-67-4
Referemce:
Benzofuran – Wikipedia,
Benzofuran | C8H6O – PubChem