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Chiral amido- and diamidophosphites with a peripheral pyridine ring in Pd-catalyzed asymmetric allylation
被引:6
作者:
Gavrilov, K. N.
[1
]
Zheglov, S. V.
[1
]
Novikov, I. M.
[1
]
Gavrilov, V. K.
[1
]
Zamilatskov, I. A.
[2
]
Mikhel, I. S.
[2
]
机构:
[1] SA Esenin Ryazan State Univ, 46 Ul Svobody, Ryazan 390000, Russia
[2] Russian Acad Sci, AN Frumkin Inst Phys Chem & Electrochem, Bldg 4,31 Leninsky Prosp, Moscow 119991, Russia
基金:
俄罗斯科学基金会;
关键词:
chiral amidophosphites;
chiral diamidophosphites;
asymmetric allylation;
palladium catalysts;
zinc(II) 5,10,15,20-tetraphenylporphyrinate;
ALLYLIC SUBSTITUTION;
ENANTIOSELECTIVE ALLYLATION;
PHOSPHORAMIDITE LIGANDS;
MONODENTATE PHOSPHITE;
PHOSPHORUS LIGANDS;
COMPLEXES;
HYDROGENATION;
EFFICIENT;
HYDROFORMYLATION;
HYDROBORATION;
D O I:
10.1007/s11172-016-1578-6
中图分类号:
O6 [化学];
学科分类号:
0703 ;
摘要:
New chiral amidophosphite and diamidophosphite ligands with exocyclic pyridyl-containing substituents were obtained. Their efficiency in the Pd-catalyzed enantioselective allylic substitution was compared: in the sulfonylation of (E)-1,3-diphenylallyl acetate with sodium p-toluenesulfinate, the ee can reach 77%; its alkylation with dimethyl malonate and amination with pyrrolidine gave up to 80% and 74% ee, respectively. The asymmetric alkylation of cinnamyl acetate with ethyl 2-oxocyclohexanecarboxylate can provide to 68% ee. The complexation of zinc(ii) 5,10,15,20-tetraphenylporphyrinate with diamidophosphite ligand and its influence on conversion and enantioselectivity of the process were studied.
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页码:2278 / 2285
页数:8
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