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4043089613
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note
-
+) 190.0242, found. 190.0241
-
-
-
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37
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-
85052276611
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-
note
-
-1) 3052, 2853, 1684, 1653, 1603, 1574, 1521, 1452, 1352
-
-
-
-
38
-
-
4043083896
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-
note
-
2O (2 mL). The organic layer was separated and ether (20 mL) was added to it in order to precipitate 2. This was filtered off and the filtrate was concentrated. The crude residue was purified by radial chromatography (EtOAc/hexanes) to afford the desired epoxide
-
-
-
-
39
-
-
4043139097
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-
note
-
For Table 1, entries 1-4, 0.2 equiv of 2 were used
-
-
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40
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4043183092
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-
note
-
1H NMR and by HRMS analysis
-
-
-
-
41
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-
4043109554
-
-
note
-
1H NMR spectra of recovered 2 was identical to that of unused 2
-
-
-
-
42
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-
4043081006
-
-
note
-
Reactions involving recycled 2 were somewhat sluggish and required up to 30 min for the alkene to disappear
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43
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3643086474
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