Table 1.

Au-Catalyzed Cycloisomerization of Allenyl Ketones 4

Entry	Substrate	Product	2,%a
1			2a, 90
2			2b, 80
3			2c, 82
4			2d, 87
5			2e, 82 (73)b [77]c

^aIsolated yield of product for reactions performed on 0.5 mmol scale.

^bIsolated yield of 2e for reaction performed in MeNO₂.

^cIsolated yield of 2e for reaction performed with 1 mol % of catalyst.