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. Author manuscript; available in PMC: 2013 Mar 27.
Published in final edited form as: Synthesis (Stuttg). 2011 Jun 21;2011(14):2223–2236. doi: 10.1055/s-0030-1260082

Table 2.

Comparison of Ruthenium Catalysts 3a–c and Rose Bengal (3d)

graphic file with name nihms362826u2.jpg
Entry Substrate Catalyst (mol%) Conditions Time (h) Yield (%)
1 1a 3a (2) air, MeCN–MeOH (1:1) 24 71
2 1a 3b (2) air, MeCN–MeOH (1:1) 110 10 (80)a
3 1a 3c (2) air, MeCN–MeOH (1:1) 110 8 (73)a
4 1a 3d (2) air, MeCN–MeOH (1:1) 36 49
5 1b 3a (2) air, MeCN–MeOH (2:1) 24 83
6 1b 3b (2) air, MeCN–MeOH (2:1) 4 65
7 1b 3c (2) air, MeCN–MeOH (2:1) 10 85
8 1b 3d (2) air, MeCN–MeOH (2:1) 10 56
a

Yield of recovered 1a.