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. Author manuscript; available in PMC: 2015 Jan 21.
Published in final edited form as: J Am Chem Soc. 2014 Feb 4;136(6):2659–2664. doi: 10.1021/ja412431g

Table 1.

Evidence for a PET mechanism involved in transformation of (±)-5 to (±)-10

graphic file with name nihms-559751-f0009.jpg
entry λ (nm) additivea solvent yield (%)b
1 >280 – HFIP – c
2 >280 – CDCl3 40
3 >280 – PhCH3 –
4 >280 Ph2CO PhCH3 69
5 315–400 – CDCl3 –
6 315–400 Ph2CO CDCl3 81
a

1 equiv. of additive used.

b

Isolated yield after column chromatography.

c

Quantitative recovery of starting material.