Synthesis of pentafluorosulfuranyl substituted alkanes
申请人:Lal Gauri Sankar
公开号:US06870068B1
公开(公告)日:2005-03-22
Addition of an SF
5
group to organic compounds such as alkyl-substituted terminal alkenes, internal alkenes and cycloalkenes via the reaction with SF
5
Br is effected under liquid phase conditions and generally in the presence of a free radical initiator, preferably triethyl borane.
A new route has been found leading to the formation of pentafluorosulfuranyl arylenes. In its broadest aspect the process comprises:
effecting dehydrohalogenation or dehydrogenation of a pentafluorosulfuranyl compound represented by either of the structures:
wherein R
1
is H, C
1-10
alkyl, C
1-10
alkoxy, C
1-10
thionyl. C1-10 alkyl ether, list more, R
2
, R
4
and R
5
are H and R
3
is H repeated R
1
to form the pentafluorosufuranyl arylene represented by the structures:
wherein R
1
-R
5
are as represented in compound represented by the structures A and B.