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. Author manuscript; available in PMC: 2013 Mar 26.
Published in final edited form as: J Org Chem. 2011 May 19;76(12):5061–5073. doi: 10.1021/jo200746y

Table 7.

More difficult Olefin CM Reactions

graphic file with name nihms298140u7.jpg
entry R time (h) yield (%)a,b
PTS PTS/KHSO4c CH2Cl2
1 COMe 4 74d 91 30
2 CN 4 20 30 4
3 CHO 8 43 70 9
4 P(O)(OEt)2 4 51 65 39
a

Chromatographically pure materials.

b

2.5 wt. % PTS used.

c

0.02 M KHSO4 used.

d

Reaction run for 12 h.