Table 3. Scope of the Cyclization of o-Alkynylbenzonitriles (X and Y Can Be CH or N) and Amides Using 29a (See Scheme 12).

Entry	Compound	R1	R2	Yield of 73a–l (%)	Yield of 74a–l (%)
1	72a	Ph	H	48	15
2	72b	p-MeO-C6H4	H	31	6
3	72c	p-F-C6H4	H	40	5
4	72d	o-CH3-C6H4	H	0	0
5	72e	o-Cl-C6H4	H	0	5
6	72f	3-Pyridyl	H	30	12
7	72g	3-Thiophene	H	49	14
8	72h	Cyclohexyl	H	43	19
9	72i	Ph	3-F	42	∼5
10	72j	Ph	5-CF3	37	11
11	72k	Ph	5-MeO	16	<5
12	72l	Ph	4-Me	40	16