Entry Donor Promoters (equiv) Solvent T (oC) Yield (%)
1 14 TfOH (0.2)/NIS (2.5) PhMe -78 to -40 16
2 14 TfOH (0.2)/NIS (2.5) CHCl3 -40 trace
3 14 TfOH (0.2)/NIS (2.5) DCE -40 trace
4 14 AgOTf (0.4)/NIS (2.5) PhMe 0 10
5 14 TBSOTf (0.4)/NIS (2.5) PhMe 0 23
6 28 (PhO)3PAuCl (0.75)/AgOTf (0.75) PhCl 0 37
7 28 (PhO)3PAuCl (0.3)/AgOTf (0.3) PhCl -20 30
8 28 (PhO)3PAuCl (0.3)/AgNTf2 (0.3) PhCl 0 21
9 28 Ph3PAuCl (0.3)/AgOTf (0.3) PhCl 0 13