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12244252703
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note
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a-c
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12244278196
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note
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3/tris-(2-furyl)phosphine. These experiments were carried out on compound 9a-E.
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14
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12244268577
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Patai, S., Ed.; Wiley: New York
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The Chemistry of Amides; Patai, S., Ed.; Wiley: New York, 1970; pp 442-445.
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The Chemistry of Amides
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12244282369
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note
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We are grateful to Drs. Neil R. Brooks and Victor G. Young, of the X-ray Crystallographic Laboratory, Department of Chemistry, University of Minnesota, for carrying out these analyses.
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(a) Savarin, C.; Srogl, J.; Liebeskind, L. S. Org. Lett. 2001, 3, 91.
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(b) Liebeskind, L. S.; Srogl, J. Org. Lett. 2002, 4, 979. Kusturin, C. L.; Liebeskind, L. S.; Neumann, W. L. Org. Lett. 2002, 4, 983.
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22
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12244311807
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note
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Steric crowding cannot be alleviated by rotation about the S-methyl bond, due to the adjacent geminal methyl groups.
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24
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12244296091
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note
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NMR studies of this phenomenon will be published separately.
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25
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12244254391
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note
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Imine 18b-E is invariably contaminated with small amounts of the thermodynamically more stable isomer 18b-Z. Isomerization is rapid in the presence of Bronsted acids.
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26
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Angiolelli, M. E.; Casalnuovo, A. L.; Selby, T. P. Synlett 2000, 5, 905.
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Angiolelli, M.E.1
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Selby, T.P.3
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27
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12244267923
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2 also effects the conversion of 19β to 23 in 91% yield. These results reflect the far greater reactivity of Ni(0) vs Pd(0) in oxidative additions.
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28
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For a related example of chelate-assisted oxidative addition with a Rh catalyst, see: Shaver, A.; Uhm, H. L.; Singleton, E.; Liles, D. C. Inorg. Chem. 1989, 28, 847.
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Shaver, A.1
Uhm, H.L.2
Singleton, E.3
Liles, D.C.4
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29
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12244295125
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