
Entry^a	ArN=O	X	ArC(O)C≡CH	Y	R	Prod.	Yield (%)
1	1a	4-NO₂	2a	H	OH	3	54^b^,c
2	1a	4-NO₂	2b	2-Br	OH	4	52^b^,c
3	1a	4-NO₂	2c	2-I	OH	5	37^b^,c
4	1b	4-COOH	2a	H	OH	6	62^c^,d,e
5	1b	4-COOH	2b	2-Br	OH	7	50^d^,f
6	1b	4-COOH	2d	3-NO₂	OH	8	84^c^,d
7	1c	4-CN	2a	H	H	9	41^f
8	1d	4-Br	2a	H	OH	10	15^f
	1d	4-Br	2a	H	H	11	35^f
9	1e	4-CF₃	2a	H	H	12	33^f
10	1f	4-Cl	2a	H	OH	13	15^f
	1f	4-Cl	2a	H	H	14	36^f
11	1a	4-NO₂	2e	2-NO₂	H	15	48^e^,f
12	1g	4-CH₃	2a	H	OH	16	23^f
	1g	4-CH₃	2a	H	H	17	15^f
13	1h	2-NO₂	2a	H	OH	18	46^f