Direct iodination of benzothiazoles under strong oxidative/acidic conditions leads to a mixture of iodinated heteroarenes with 1–2 major components, which are easily separable and which structures depend on the I2 equivalents used. Among the unexpected but dominant products were identified 4,7-diiodobenzothiazoles with a rare substitution pattern for SEAr reactions of this scaffold. These were employed
在强氧化/酸性条件下,
苯并噻唑的直接
碘化反应会生成具有1-2个主要成分的
碘化杂
芳烃的混合物,这些成分易于分离,其结构取决于所使用的I 2当量。在出人意料但占主导地位的产物中,鉴定出4,7-二
碘苯并噻唑具有对该支架的S E Ar反应的罕见取代模式。这些被用于合成4,7-双(三芳基胺-
乙炔基)
苯并噻唑-一种新型的高效准四极荧光团,在近红外区域显示大的两光子吸收截面(540-1374 GM)。