PROCESS FOR PREPARING BENZOFURAN DERIVATIVES SUBSTITUTED AT POSITION 5
申请人:SANOFI
公开号:US20130165674A1
公开(公告)日:2013-06-27
The disclosure relates to a process for preparing benzofuran derivatives of general formula I:
in which R, R
1
, and R
2
are as defined in the disclosure; by coupling the hydroxylamine with a diketone of general formula III:
in order to form an oxime that is then cyclized by heating in order to form the desired compound.
KETOBENZOFURAN DERIVATIVES, METHOD FOR SYNTHESIZING SAME, AND INTERMEDIATES
申请人:BAILLY Frederic
公开号:US20130012729A1
公开(公告)日:2013-01-10
The present disclosure relates to ketobenzofuran derivatives of the general formula (I):
as well as to a method of synthesizing the same by coupling a quinonimine and an enaminone by a Nenitzescu reaction and to the intermediates of the synthesis thereof.