Table 2.

Photocatalytic conversion of alcohol 1 to bromide 2 in continuous flow.

entry	halide source	Tres (min)	flow rate (μL/min)	recovered 1 (%)a	yield 2 (%)a	yield 3 (%)a
1	NaBr	60	216	89	<5	<5
2	NaBr	120	110	47	53	–
3	NaBr	240	54.2	45	32	23
4	TBAB	240	110	–	21	63
5	NaBr	240	110	–	91(83)b	–

^aYield determined by analysis of ¹H NMR. ^bYield determined by isolation via chromatography.