Sulfamides guide γ-selective chlorine-transfer reactions.

Entrya	Product		Yieldb
1		4a	94
2		4b	93
3		4c	98
4		4d	94
5			94c
6		4e	95
7		4f	81
8		4g	85
9		4h	92
10			95c

^aConditions A: 1.0 equiv. N-chlorosulfamide 1, PhH (0.04 M), UV light.

^bIsolated yield.

^c1.0 equiv. N-chlorosulfamide 1, ⁱPrOAc (0.1 M), two 26 W CFL bulbs (1600 lumens).