申请人:EASTMAN KODAK COMPANY
(a New Jersey corporation)
公开号:EP0330444A2
公开(公告)日:1989-08-30
There are disclosed novel thiorhodamines having the following structural formula:
wherein
R and R₁ are individually H or alkyl of 1 to 5 carbon atoms, and
Z is an anion.
Also disclosed is the only known, and novel, method for making them, namely
a) conducting an addition reaction between a thioxanthone and a compound having the formula:
wherein R₂ is alkyl of 1 to 5 carbon atoms;
b) dehydrating the resulting compound of step a) in a strong acid to form a 9-[2-oxazolinylphenyl]thioxanthylium salt;
c) hydrolyzing the oxazoline ring with acid to the 9-(2-carboxyphenyl)thioxanthylium salt; and
d) optionally esterifying the resultant compound of step c) in an alkanol and strong acid, wherein the alkanol contains from 1 to 5 carbon atoms.
公开了具有以下结构式的新型硫代二胺:
其中
R 和 R₁ 分别为 H 或 1 至 5 个碳原子的烷基,以及
Z 是阴离子。
此外,还公开了唯一已知的新型硫代二胺的制造方法,即
a) 在硫杂蒽酮和具有以下式子的化合物之间进行加成反应:
其中 R₂ 是 1 至 5 个碳原子的烷基;
b) 将步骤 a)得到的化合物在强酸中脱水,形成 9-[2-噁唑啉基苯基]硫酮鎓盐;
c) 用酸水解噁唑啉环,生成 9-(2-羧基苯基)硫杂蒽鎓盐;以及
d) 在烷醇和强酸中任选酯化步骤 c)得到的化合物,其中烷醇含有 1 至 5 个碳原子。