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(a) Botman, P. N. M.; Dommerholt, F. J.; de Gelder, R.; Broxterman, Q. B.; Schoemaker, H. E.; Rutjes, F. P. J. T.; Blaauw, R. H. Org. Lett. 2004, 6, 4941.
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Rutjes, F.P.J.T.6
Blaauw, R.H.7
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4
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24944525408
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(b) Wijdeven, M. A.; Botman, P. N. M.; Wijtmans, R.; Schoemaker, H. E.; Rutjes, F. P. J. T.; Blaauw, R. H. Org. Lett. 2005, 7, 4005.
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Rutjes, F.P.J.T.5
Blaauw, R.H.6
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5
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0141826237
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For previous work in this area, see: (a) Mizutani, N.; Chiou, W.-H.; Ojima, I. Org. Lett. 2002, 4, 4575.
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6
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0242522450
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(b) Vink, M. K. S.; Schortinghuis, C. A.; Mackova-Zabelinskaja, A.; Fechter, M.; Pochlauer, P.; Castelijns, A. M. C. F.; van Maarseveen, J. H.; Hiemstra, H.; Griengl, H.; Schoemaker, H. E.; Rutjes, F. P. J. T. Adv. Synth. Catal. 2003, 345, 483.
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Vink, M.K.S.1
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Hiemstra, H.8
Griengl, H.9
Schoemaker, H.E.10
Rutjes, F.P.J.T.11
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Katritzky, A.R.1
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24044449622
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For approaches to N,N-acetals on solid support, see: (a) Nielsen, T. E.; Le Quement, S.; Meldal, M. Org. Lett. 2005, 7, 3601.
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(b) Rinnová, M.; Nefzi, A.; Houghten, R. A. Tetrahedron Lett. 2002, 43, 2343.
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Rinnová, M.1
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10
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1842430777
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For recent reviews on N-acyliminium ion chemistry, see: (a) Maryanoff, B. E.; Zhang, H.-C.; Cohen, J. H.; Turchi, I. J.; Maryanoff, C. A. Chem. Rev. 2004, 104, 1431.
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12
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31544479851
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note
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2) of L-allysine ethylene acetal (1) according to ref 3a. The amino acids 6a-i were used crude after N-protection (Cbz-OSu, dioxane, aqueous NaOH).
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13
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31544471215
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note
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For more details, see the Supporting Information.
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14
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31544458746
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note
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Only one diastereomer of 11b could be detected by HPLC.
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15
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0031022686
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0001188647
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(a) For the synthesis of (S)-2-amino-5-hexenoic acid, see: Wolf, L. B.; Sonke, T.; Tjen, K. C. M. F.; Kaptein, B.; Broxterman, Q. B.; Schoemaker, H. E.; Rutjes, F. P. J. T. Adv. Synth. Catal. 2001, 343, 662.
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Sonke, T.2
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Kaptein, B.4
Broxterman, Q.B.5
Schoemaker, H.E.6
Rutjes, F.P.J.T.7
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