A novel quaternary ammonium salts derived from α-amino acids with large steric hindrance group and its application in asymmetric Mannich reaction
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2009 ◽
Vol 50
(40)
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pp. 5640-5643
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2006 ◽
Vol 248
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pp. 1-9
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1980 ◽
Vol 71
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pp. 17-30
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2002 ◽
Vol 13
(9)
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pp. 927-931
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2004 ◽
Vol 25
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pp. 347-348
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1965 ◽
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pp. 5439-5446
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