Table 3.
CuDPP-Mediated Amidation of Organostannanes with O-Acetyl Hydroxamic Acids12
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---|---|---|---|
entry | R1 | R2 | amide (%)* |
1 | phenyl | p-tolyl | 80 |
2 | phenyl | 4-methoxyphenyl- | 76 |
3 | phenyl | 4-chlorophenyl- | 56 |
4 | phenyl |
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73 |
5 | phenyl | (Z)-1-propenyl | 66 |
6 | phenyl | 2-furyl | 73 |
7 | phenyl | 2-pyrazinyl | 42 |
8 | 4-nitrophenyl | p-tolyl | 74 |
9 | 3-methoxyphenyl | p-tolyl | 71 |
10 | 1-naphthyl | p-tolyl | 83 |
11 | 2-thienyl | 4-methoxyphenyl | 90 |
12 | 2-thienyl | 2-thienyl | 60 |
13 | benzyl | p-tolyl | 74 |
14 | benzyl | 4-iodophenyl | 60 |
15 | benzyl | 2-methyl-1-propenyl | 64 |
16 | methyl | p-tolyl | 85 |
17 | undecyl | p-tolyl | 66 |
18 | undecyl | (E)-β-styryl | 52 |
Isolated yield.