Table 2.

Cu-catalyzed 32CA reaction of azide and alkyne.

Entry	X	Y	Z	Yield (%)
9a	H	H	H	95
9b	H	H	3,4-Cl	75
9c	H	H	4-Br	71
9d	Py	H	4-Br	82
9e	Py	H	2-Cl	81
9f	Py	5-Br	H	85
9g	Py	H	3,4-Cl	86
9h	4-Cl	H	2-Cl	58