How is 2-Chloro-6-fluoro-1,3-benzothiazole (CAS: 399-74-6) typically synthesized?

2-Chloro-6-fluoro-1,3-benzothiazole is typically synthesized through a multi-step process involving the introduction of chlorine into a benzothiazole ring, followed by a fluorination step. Commonly, this involves reacting benzothiazole with thionyl chloride and then with fluorine gas or hydrogen fluoride. The reaction conditions are carefully controlled to achieve high yields and good selectivity.