Table 7.

Comparison of RC₆H₄SCF₃ yields, obtained under a pressure of CF₃Br with and without UV irradiation (DMF, p = 3–5 atm, T = 10–20 °C).

R	Irradiation time, h	Yields of RC6H4SCF3, %
		Irradiation	Without irradiationa
4-CH3	1.5	82	75
3-NH2	2.2	56	23
	4	72.5
4-NHCOCH3	2.7	69	9
4-Cl	1.2	48	34

^aAccording to [178] (DMF, p = 2–3 atm, 3 h, 20 °C)