Table 1.

Pd-catalyzed Alkynylation of N-Fused Heterocycles (eq 3)

#	R	Product	Yield, %a
1	Ph		51(59)
2	Si(CH3)3		62(71)
3	Ph		76(97)b
4	nBu		64(88)
5	Si(CH3)3		90(98)
6	Si(CH3)3		87(98)
7	Ph		73(83)
8	nBu		72(89)
9			65(76)
10	CO2Et		64(75)
11	Ph		76(97)
12	Ph		51(64)
13			71(85)b
14	CO2Et		63(74)
15	Si(Sh3)3		59(71)
16			58(67)
17			50(56)c

^aIsolated yields, NMR yields are in brackets.

^bTrace amount of products were detected with iodo- and chloroalkynes (see Supporting Information for details).

^cYield based on recovery of starting material.¹²