Stereoselective palladium-catalyzed cross-coupling of (2-amido-1-phenylpropyl)zinc compounds with aryl bromides
Stereoselective palladium-catalyzed cross-coupling of (2-amido-1-phenylpropyl)zinc compounds with aryl bromides
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(2-酰胺基-1-苯基丙基)锌化合物与芳基溴的立体选择性钯催化交叉偶联
DOI:
10.1007/s40242-013-3057-z
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发表时间:
2013
影响因子:
3.1
通讯作者:
Naixing Wang
中科院分区:
文献类型:
--
作者:
T. Shi;Zhou Dong;Shu;Naixing Wang
A controllable diastereoselective C(sp2)-C(sp3) Negishi coupling reaction of secondary benzylic zinc reagents with aryl bromides to form medicinally important 2-arylphenylethylamines was demonstrated. In the presence of Pd(OAc)2 and 2-dicyclohexylphosphino-2′,6′-dimethoxybiphenyl(S-phos), open-chain(2-amido-1-phenylethyl)zinc reagent bearing a β-NHAc or NHCHO group undergoes coupling reaction to give syn-1-arylphenylethylamine mainly, whereas the zinc reagent bearing a sterically hindered β-amido group, for example NHCOC(CH3)2OTBS undergoes the coupling reaction to yield anti-1-arylphenylethylamines with a configuration inversion. In addition, a working mechanism for the stereoselective Negishi cross-coupling was also proposed.
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