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1
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0033615774
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Part of this work has previously been published as a communication; see: Y. Yokoyama, H. Hikawa, M. Mitsuhashi, A. Uyama, Y. Murakami, Tetrahedron Letters 1999, 40, 7803-7806.
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Yokoyama, Y.1
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6
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4544249105
-
-
note
-
Although we have reported that the reaction of 4-bromoindole (7) with N-acetyldehydroalanine (11) did not proceed, reexamination of this experiment showed that in fact, the reaction gave N-acetyl-4-bromotryptophan (12b); see ref. [2].
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7
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0000414924
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8
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-
4544235600
-
-
note
-
Pure acid dl-12b was obtained after chromatography with neutralized silica gel (hexane/EtOAc, 1:2) in 71% yield (see Exp. Sect.).
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9
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0001500278
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0009748401
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4544347942
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Snyder also proposed the same intermediate 24, see ref.[5]
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37
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42
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4544288570
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note
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N2′ mechanism, but rather via π-allyl-palladium complex 25 (Scheme 8).
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43
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0034743050
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