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0344559416
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note
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8c
-
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41
-
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0345421557
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note
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7
-
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42
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0345421556
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note
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3.
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44
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85190280711
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For the Kröhnke annulation, see: (a) Kröhnke, F. Chem. Ber. 1937, 70, 864.
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Kröhnke, F.1
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0344990485
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note
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8c
-
-
-
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50
-
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0344127885
-
-
note
-
9b
-
-
-
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51
-
-
0344127886
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-
note
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8c
-
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-
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52
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0344559415
-
-
note
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4NI, see ref 5e.
-
-
-
-
53
-
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0344127884
-
-
note
-
Since both our and Nakajima N,N-dioxides produced the same enantiomer of alcohol 3a, it can be assumed that the configuration at the chiral axis in the intermediate arising from (-)-5 is the same as that in Nakajima's catalyst, i.e., (S).
-
-
-
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54
-
-
0345421558
-
-
note
-
4 where chelation leads to a seven-membered ring.
-
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55
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0344990480
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note
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4,24
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56
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0041967639
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Malkov, A. V.; Dufková, L.; Farrugia, L.; Kočovsky, P. Angew. Chem., Int. Ed. 2003, 42, 3674.
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0344127883
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note
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9 but the experimental procedures have not been revealed.
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63
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0345421555
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note
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9c
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