. Author manuscript; available in PMC: 2013 Jun 19.

Published in final edited form as: J Am Chem Soc. 2008 Jan 4;130(4):1440–1452. doi: 10.1021/ja0773507

Table 1.

Optimization of Cycloisomerization of Thioalkynones

graphic file with name nihms382578u1.jpg

entry	catalyst	GC ratio 10:11	NMR yield (%)^a
1	CuI	5:1	66^b
2	AuCl₃	1:1.4	5
3	PtCl₂	1:2.5	traces
4	Pd(MeCN)₂Cl₂	1:3.5	2
5	(Et₃P)AuCl	20:1	63

NMR yields calculated using dibromomethane as an internal standard.

DMA used as solvent.