申请人:——
公开号:US20040143124A1
公开(公告)日:2004-07-22
A compound having Formula I
1
wherein one of R
1
and R
2
is a group of the formula
2
wherein R
4
is selected from H and hydrocarbyl, R
5
is a hydrocarbyl group and L is an optional linker group, or R
1
and R
2
together form a ring substituted with the group
3
wherein R
3
is H or a substituent, and wherein X is selected from S, O, NR
6
and C(R
7
)(R
8
), wherein R
6
is selected from H and hydrocarbyl groups, wherein each of R
7
and R
8
are independently selected from H and hydrocarbyl groups.
化合物具有I1式,其中R1和R2中的一个是公式2的基团,其中R4从H和烃基中选择,R5是烃基团,L是可选的连接基团,或者R1和R2一起形成带有基团3的环,其中R3是H或取代基,X从S,O,NR6和C(R7)(R8)中选择,其中R6从H和烃基团中选择,R7和R8各自独立地从H和烃基团中选择。