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31
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19944420169
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note
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3: C, 76.44; H, 9.95; N, 3.07. Found: C, 76.46; H, 10.11; N, 2.81.
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-
-
-
32
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19944412202
-
-
note
-
+].
-
-
-
-
33
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19944366299
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note
-
2I [M + 1]: 336.0461; found: 336.0471.
-
-
-
-
34
-
-
19944424500
-
-
note
-
3): δ = 1.24-1.86 (m, 8 H), 1.94-2.06 (m, 1 H), 2.14-2.27 (m, 2 H), 3.66 (br s, 3 H), 4.10-4.50 (m, 2 H), 4.85-5.10 (m, 2 H), 5.70-6.20 (m, 1 H).
-
-
-
-
36
-
-
19944394259
-
-
note
-
3OH)] and ee (94%) of the comparison material. This purity is consistent with the observed diastereoselection (95:5) in the cycloaddition and a subsequent small enrichment.
-
-
-
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37
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0026737943
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Skrinjar, M.; Nilsson, C.; Wistrand, L.-G. Tetrahedron: Asymmetry 1992, 3, 1263.
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Skrinjar, M.1
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Wistrand, L.-G.3
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