Extension of reaction substrate.

Entrya	Nucleophiles	Product	Yieldb (%)	M.P./°C
				Found	Report (Lit)
1			98	140–142	142–143 (ref. 37)
2			88	158–160	134–135 (ref. 29)
3			91	189–191	187–189 (ref. 29)
4			98	176–178	183–191 (ref. 37)
5			88	154–155	142–145 (ref. 37)
6			90	168–169	184–186 (ref. 37)
7			93	151–153	145–147 (ref. 37)
8			93	169–172	155–158 (ref. 37)
9			95	158–160	—
10			92	193–195	186–187 (ref. 29)
11			91	193–194	176–178 (ref. 37)
12			88	110–112	113–119 (ref. 36)
13			91	136–138	139–141 (ref. 37)
14			90	184–186	—
15			92	74–76	77–80 (ref. 31)
16			95	189–191	192 °C (ref. 36)
17	Me3SiN3		90	White oil	White oil36

^aReaction conditions: xanthen-9-ol (0.5 mmol), indoles (0.5 mmol), ionic liquid (0.1 eq.), 50 °C, 4 h.

^bIsolated yields.