申请人:WEEKS Ian
公开号:US20110082279A1
公开(公告)日:2011-04-07
The invention relates to chemiluminescent compounds of general formula (I)
wherein:
either:
R
1
is a reactive group capable of reacting with an amine or thiol moiety;
L
1
is a hydrocarbon linker moiety comprising 2-12 carbon atoms, optionally substituted with hydroxy, halo, nitro or C
1
-C
4
alkoxy; and
R
2
is hydrogen, C
1
-C
4
alkyl, C
1
-C
4
haloalkyl, aryl, fused aryl, C
1
-C
4
alkoxy, C
1
-C
4
acyl, halide, hydroxy or nitro;
or, alternatively:
the combination R
1
-L
1
- comprises a C
1
-C
4
alkyl group optionally substituted with hydroxy, halo, nitro or C
1
-C
4
alkoxy; and
R
2
comprises a group R
4
-L
1
-, where R
4
is a reactive group capable of reacting with an amine or thiol moiety; and L
1
is as defined above;
L
2
is —C(═O)O—, —C(═O)—S— or —C(═O)N(SO
2
R
5
)—,
wherein, in each case, the —C(═O) is linked to the ring carbon atom, and R
5
is C
1
-C
8
alkyl, aryl, C
1
-C
8
alkoxy or C
1
-C
8
acyl;
R
3
is a substituted C
1
-C
8
alkyl, C
2
-C
8
alkenyl, C
2
-C
8
alkynyl or aryl group wherein at least one of the said substituents is electron-withdrawing such that the pKa of the conjugate acid of the leaving group formed from R
3
and the —O, —S or —N(SO
2
R
5
) of the L
2
group is ≦about 9.5; and
X
−
is an anion formed as the result of the synthesis and processing of the molecule; wherein the compound may contain one or more additional R
2
moieties on either or both outer rings, provided that only one of said R
2
moieties may comprise an R
4
-L
1
-group.
本发明涉及通式(I)的
化学发光化合物,其中:
要么:
R1是能够与胺或
硫醇基团反应的反应性基团;
L1是一个含有2-12个碳原子的烃链连接基团,可选地被羟基,卤素,硝基或C1-C4烷氧基取代;
R2是氢,C1-C4烷基,C1-C4卤代烷基,芳基,融合芳基,C1-C4烷氧基,C1-C4酰基,卤素,羟基或硝基;
或者,另一种情况是:
组合R1-L1-包括一个C1-C4烷基,可选地被羟基,卤素,硝基或C1-C4烷氧基取代;
R2包括一个R4-L1-基团,其中R4是能够与胺或
硫醇基团反应的反应性基团;L1如上定义;
L2是-C(═O)O-,-C(═O)-S-或-C(═O)N(SO2R5)-,在每种情况下,-C(═O)连接到环碳原子,并且R5是C1-C8烷基,芳基,C1-C8烷氧基或C1-C8酰基;
R3是取代的C1-C8烷基,C2-C8烯基,C2-C8炔基或芳基,其中至少一个取代基是电子吸引基团,使得由R3和
L2基团的-O,-S或-N(SO2R5)形成的离去基的共轭酸的pKa ≦约9.5;
X-是分子合成和处理的结果形成的阴离子;其中化合物可以在一个或两个外环上包含一个或多个额外的R2基团,只有其中一个R2基团可以包含一个R4-L1-基团。