Rhodium-catalyzed ortho-benzoxylation of sp(2) C-H bond.
A rhodium-catalyzed ortho-benzoxylation of the sp(2) C-H bond by carboxylic acids is described. The procedure tolerates carbomethoxy, formyl, bromo, chloro, and nitro groups, providing the benzoxylated products in moderate to good yields. Importantly, no external oxidant was required for the transformation.
Ye
Zhishi
Z
College of Chemistry & Materials Engineering, Wenzhou University, Wenzhou 325027, PR China.
Wang
Wenhui
W
Luo
Fang
F
Zhang
Shouhui
S
Cheng
Jiang
J