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Asymmetric palladium(0) catalyzed tandem alkylation and SN′ cyclization of 1,4-dichlorobut-2-ene by chiral imines of aminoacetonitrile for the total synthesis of 1-aminocyclopropanecarboxylic acids
被引:0
|作者:
Dorizon, P
[1
]
Su, GF
[1
]
Ludvig, G
[1
]
Nikitina, L
[1
]
Ollivier, J
[1
]
Salaun, J
[1
]
机构:
[1] Univ Paris Sud, Inst Chim Mol Orsay, CNRS, Lab Carbocycles, F-91405 Orsay, France
来源:
关键词:
(-)-and (+)-1-hydroxypinanone aminoacetonitrile imines;
E-1-amino-2-vinylcyclopropanecarbonitriles;
D O I:
暂无
中图分类号:
O62 [有机化学];
学科分类号:
070303 ;
081704 ;
摘要:
Chiral imines (-)- and (+)-8a, prepared from aminoacetonitrile and (-)- or (+)-1-hydroxypinanones, reacted with E- and Z-1,4-dichlorobut-2-enes 1 in the presence of (S)- or (R)-BINAP palladium(0) complexes to produce the diastereoselectively pure 1-amino-2-vinylcyclopropane carbonitrile E-13a, suitable precursor of ACCs. However subsequent Pd(0) induced reversible ring opening of the vinylcyclopropane moiety seems responsible for the low enantiomeric excesses obtained (less than or equal to 32% ee).
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页码:483 / +
页数:5
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