Table 23.

Base-catalyzed intramolecular rearrangement of 1,2-dioxetanes.

Entry	X	R	Ar-OH	Reaction conditions	Ref.
1	O	t-Bu	R1, R2 = H, OMe, CO2Me, CO2H, CH2OH	TBAF in DMSO at 25 °C for 1 h	[463]
2	O	t-Bu	R = H, OMe; Y = O, S	NaOH in СH3CN/H2O at 45 °C	[464]
3	O	t-Bu		TBAF in DMSO (NMP or DMF) at 45–100 °C	[465]
4	O	Me, Et, iPr, iBu		in NMP at 50–100 °C or in TBAF/NMP at 35–60 °C	[466]
5	O	t-Bu		TBAF in CH3CN at 45 °C	[467]
6	NBoc	t-Bu	3-OH-C6H4 3-OMe-C6H4 6-OH-C10H6	TBAF in DMSO at 25 °C	[468–469,473]
7	S, SO, S(O)2	t-Bu	3-OH-C6H4 3-OMe-C6H4 3-OAc-C6H4	TBAF in DMSO at 25 °C	[472]
8	O	t-Bu	HO-phenanthrenyl	TBAF in CH3CN at 45 °C	[474]
9	O	t-Bu	R = H, Me, Ph	TBAF in CH3CN or NaOH in H2O at 45 °C	[475]
10				TBAF in DMSO at 25 °C	[470]
11				TBAF in THF/DMSO (1:1) at 25 °C	[476]
12				DBU in CH3CN at 25 °C	[477]
13				TBAF in DMSO/PBS buffer	[471]