Table 2:

Selected ABS methods using oxidative organic reactions (B).^[a]

Primary Reaction	Associated Secondary Reactions	Analytes	Associated Imaging Modalities	Seminal Refs./Reviews
	(formal) retro [2+2] cycloaddition	1O2	chemiluminescence	116
	Criegee fragmentation, b-elimination	O3	fluorescence	117
	dehydration	NO+O2	fluorescence	65
	dehydration, electrophilic aromatic substitution	NO+O2	fluorescence	118
	5-exo-tet cyclization, hydrolysis	ONOO−	fluorescence	120, 121
	5-exo-trig cyclization, trans-esterification	HNO	fluorescence	123
	dehydration, 5-exo-trig cyclization	HNO	fluorescence, chemiluminescence	124
	5-exo-trig cyclization, thio-esterification	RS-(S)n-SR, H2S2, or S8	fluorescence	128
		HSnR (n>1); RSH, S8		129

^[a]EDG = electron-donating group.