Table 1.

ddition of Phenols to Activated Allenes^a

entry	R1	R2	E	1	yield (%)b	E:Zc
1	H	H	CO2Et	1a	>99	E only
2	4-Me	H	CO2Et	1b	97	E only
3	4-OMe	H	CO2Et	1c	92	E only
4	4-I	H	CO2Et	1d	69	E only
5	4-Br	H	CO2Et	1e	72	E only
6	4-Cl	H	CO2Et	1f	62	E only
7	4-F	H	CO2Et	1g	78	E only
8	4-CF3	H	CO2Et	1h	73	E only
9	4-CO2Et	H	CO2Et	1i	90	E only
10	4-NHBoc	H	CO2Et	1j	89	4:1
11	3-Me	H	CO2Et	1k	95	E only
12	2-Me	H	CO2Et	1l	96	20:1
13	2-I	H	CO2Et	1m	91	E only
14	2,6-di-Me	H	CO2Et	1n	66	E only
15	2,6-di-t-Bu	H	CO2Et	1o	0	N/A
16	4-OMe	Ph	CO2Et	1p	89	Z only
17	4-CF3	Ph	CO2Et	1q	97	Z only
18	4-CF3	Ph	CN	1r	88	Z only

^aReactions were performed using 1.1 equiv of allene.

^bIsolated yield.

^cDetermined through ¹H NMR spectroscopic analysis.