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. Author manuscript; available in PMC: 2019 Aug 31.
Published in final edited form as: European J Org Chem. 2018 Jun 11;2018(32):4381–4388. doi: 10.1002/ejoc.201800745

Table 4.

Mechanistic Experiments.

graphic file with name nihms-982427-t0010.jpg

Entry[a] Additives Yield 3e [%][b]
1 none 0
2 Cu(OAc)2 (1 equiv) 60%
3 [Cp*Rh(MeCN)3][SbF6]2 (10 mol %) 10%
[a]

Conditions: 0.05 mmol of 5 in HFIP (0.1 M) at 80 °C for 20 h.

[b]

Yields determined by 1H NMR spectroscopic analysis relative to SiMe3Ph as an external standard.