Table 3.

Scope of Indole

entry	indole	product	% yield 2	% yield 3
1	1b	2i	66%	5%
2	1c	2j	47%	9%
3	1d	2k	51%	10%
4	1e	2l	70%	10%
5	1f	2m	64%	14%
6	1g	2n	61%	17%

Conditions: 2 equiv indole, 1 equiv PhI, 4 equiv KOtBu