Performance of relevant catalyst systems in the model reaction of 1a and 2 using anisole and butyl acetate as solvents.

Entry	Catalyst	[mol%]	Conv. [%], 1 h in Anisole		Conv. [%], 1 h, in nBuOAc
			1a a	2 b	1a a	2 b
1	7/GCc	0.33/1	51	52	66	63
2	FeCl3/DMAP	1/1	30	30	41	43
3	TBAB	2	19	17	26	27
4	Et3NBn	2	19	20	24	27
5	PPh3	2	20	19	16	11
6	PPh4Br	2	47	52	55	53