Reduction of coordinated molecular oxygen by organic substrates

Oct 1, 1974 - Colin W. Anson , Soumya Ghosh , Sharon Hammes-Schiffer , and ... Mirza, Bernard Bocquet, Chantal Robyr, Silvia Thomi, and Alan F. Willia...
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7119 Table 11. Reaction of terr-Butylmagnesium Chloride with Benzophenone Grignard prepared in excess

Magnesium Duritvd

ExDt

sc

15 16 17 18 19 20 21 22 23 24

t-BuC1 Mg Mg Mg t-BuC1

GGT GGT GGT

sc GGT sc sc sc sc

t-BuC1 t-BuClb t-BuC1 t-BuClC

Solvent

Grignard concn ( M )

Ether Ether Ether Ether Ether Ether THF THF HMPA HMPA

0.188 0.188 0.188 0.230 0.033 0.188 0.208 0.188 0.188 0.188

z

%

74

G/K ratio

1,6-addition

1,2-addition

benzopinacol

1.5

48.0 50.0 48.5 50.0 43.8 49.1 41.3 47.4 26.0 20.8

42.3 40.3 40.7 42.2 31.2 38.2 47.0 45.3 72.3 77.8

9.7 9.7 10.8 8.8 25.0 12.7 11.7 7.3