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O
O
OPdX
O
PdX
O
protolysis
ArPdX
H
H
O
Ar
Ar
Ar
Ar
(ArB O)
3
O
O
O
PdX
Ar
A. (MeCN)
4
Pd( OTf)
2,
O
2,
DMSO, 50-7 0°C
B. (MeCN)
4
Pd(O Tf)
2,
DC E, r .t .
H
Ar
Ar
Scheme 9.150 Formation of regular Heck products versus conjugate addition.
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