Table 1. Retro-Buchner/Cyclopropanation To Form 3a.

entry	deviation from standard conditionsa	yield (%)b
1	none	75
2	DCE instead of EtOAc	68
3	toluene instead of EtOAc	16
4	THF instead of EtOAc.	46
5	catalyst B instead of A	38
6	catalyst C instead of A	−
7	catalyst D instead of A	−
8	catalyst E instead of A	14

^aStandard conditions: cycloheptatriene 1, styrene 2 (1.5 equiv), and [JohnPhosAu(MeCN)SbF₆] (A) (5 mol %) in EtOAc (0.25 M) at 75 °C for 12 h.

^bDetermined by ¹H NMR with diphenylmethane as internal standard.