In 2019,Chemical Communications (Cambridge, United Kingdom) included an article by Teng, Kun-Xu; Niu, Li-Ya; Li, Jie; Jia, Lu; Yang, Qing-Zheng. Safety of 4-Ethynylpyridine. The article was titled 《An unexpected coupling-reduction tandem reaction for the synthesis of alkenyl-substituted BODIPYs》. The information in the text is summarized as follows:
We report an unexpected coupling-reduction tandem reaction as a general and efficient one-pot synthesis of alkenyl-substituted boron dipyrromethene (BODIPY) from chlorinated-BODIPY and alkyne. This unique synthesis combined the Sonogashira coupling reaction and reduction reaction without adding an addnl. reagent, which shows higher yields, broader substrate scope and faster reaction rate compared with the conventional methods of the Knoevenagel reaction and Heck coupling reaction. In the experiment, the researchers used 4-Ethynylpyridine(cas: 2510-22-7Safety of 4-Ethynylpyridine)
4-Ethynylpyridine(cas: 2510-22-7) belongs to pyridine. Pyridines are often used as catalysts or reagents; particular notice has been paid recently to how pyridine coordinates to metal centers enabling a wide range of valuable reactions. Safety of 4-Ethynylpyridine