Table 2. Au(i)-catalyzed intramolecular cycloisomerization of 1,6-enyne 18 ^a.

Entry	[Au]	Solvent	Conv.b (%)	rr19/20 b	Entry	[Au]	Solvent	Conv.b (%)	rr19/20b
1	22	CD2Cl2	94	1 : 8	10	13fa	CD2Cl2	98	1 : 10.6
2	3a	CD2Cl2	97	1 : 10.8	11	22	ClCH2CH2Cl	96	1 : 6.3
3	14a	CD2Cl2	95	1 : 9.4	12	9fa	ClCH2CH2Cl	95	1 : 9.9
4	9aa	CD2Cl2	>99	1 : 7.0	13	22	Br(CH2)4Br	>99	1 : 3.8
5	9da	CD2Cl2	94	1 : 16.1	14	9fa	Br(CH2)4Br	>99	1 : 10.7d
6	9ea	CD2Cl2	97	1 : 4.1c	15	13fa	Br(CH2)4Br	>99	1 : 5.6f
7	9ga	CD2Cl2	95	1 : 10	16	22	C6H11Cl	97	1 : 4.6
8	9fa	CD2Cl2	98	1 : 23.1d	17	9fa	C6H11Cl	73	1 : 7.8
9	9fb	CD2Cl2	73	1 : 13.7e	18	13fa	C6H11Cl	95	1 : 6.3

^aReactions performed on a 0.1 mmol scale. Reactions performed indifferently in situ using the appropriate ligand and [(Me₂S)AuCl] or ex situ (see SI).

^bDetermined by ¹H NMR spectroscopy using an internal standard.

^cContains 20% of 21.

^dContains 4% of 21.

^eUsing AgSbF₆ instead of NaBAr_F.

^fContains 48% of 21.