Table 1.

Decarboxylative xanthylation of hexanoic acid.

entry	xanthylamide reagent	initiation	% yielda
1	1 (1 equiv)	440 nm LED	59
2	1 (1 equiv)	10 mol % DLP	49
3	2 (1 equiv)	440 nm LED	81
4	2 (1.2 equiv)	440 nm LED	86
5	2 (1 equiv)	10 mol % DLP	55
6	2 (2 equiv)	10 mol % DLP	70
7b	2 (1 equiv)	10 mol % DLP	<2
8	2 (1 equiv)	-	<2

^aDetermined by ¹H NMR spectroscopy of the crude reaction mixtures using hexamethyldisiloxane as an internal standard.

^bReaction was performed in the presence of 1 equiv Cs₂CO₃.