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0345520231
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16
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20444504339
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18
-
-
21844476117
-
-
For exceptions, see Section 6.1.
-
For exceptions, see Section 6.1.
-
-
-
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22
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0345097528
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E.G. Occhiato, C. Prandi, A. Ferrali, A. Guarna, and P. Venturello J. Org. Chem. 68 2003 9728 9741
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Occhiato, E.G.1
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-
26
-
-
21844452878
-
-
see Ref. 8.
-
The experiment shown in Eq. 3 (conditions b) may not be reproducible (see Ref. 8).
-
-
-
-
28
-
-
21844461011
-
-
note
-
Isomerization behavior significantly complicates the reactivity profile (Section 2.3.3). The withdrawing group may create steric interactions (see Section 2.1), or engage in two-point binding to the catalyst (Fig. 2). Both of these factors could also affect reaction rate.
-
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47
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0037019958
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E.G. Occhiato, C. Prandi, A. Ferrali, A. Guarna, A. Deagnostino, and P. Venturello J. Org. Chem. 67 2002 7144 7146
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48
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6344243267
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C. Prandi, A. Ferrali, A. Guarna, P. Venturello, and E.G. Occhiato J. Org. Chem. 69 2004 7705 7709
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Occhiato, E.G.5
-
50
-
-
21844480847
-
-
note
-
Resolution of allenes (-)-1, and (+)-1 was achieved via chiral HPLC methods.
-
-
-
-
51
-
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21844474771
-
-
note
-
The absolute stereochemistry was determined by X-ray crystallographic examination of the chiral carbamate derivative. Allene (-)-1 was assigned as (S) and (+)-1 as (R).
-
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56
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0032882713
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L.N. Pridgen, K. Huang, S. Shilcrat, A. Tickner-Eldridge, C. DeBrosse, and R.C. Haltiwanger Synlett 10 1999 1612 1614
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57
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0001013911
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W.C. Clark, A.M. Tickner-Eldridge, G.K. Huang, L.N. Pridgen, M.A. Olsen, R.J. Milss, I. Lantos, and N.H. Baine J. Am. Chem. Soc. 120 1998 4550
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Milss, R.J.6
Lantos, I.7
Baine, N.H.8
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61
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0034596074
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S. Giese, L. Kastrup, D. Stiens, and F.G. West Angew. Chem., Int. Ed. 39 2000 1970 1973
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Giese, S.1
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0343196689
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78
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1342332890
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For an alternative Nazarov cyclization strategy targeting the hydroazulene, see P. Chiu, and S. Li Org. Lett. 6 2004 613 616
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Chiu, P.1
Li, S.2
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81
-
-
21844454414
-
-
see Ref. 2a.
-
For a collection of related examples and a detailed explanation of this form of the Nazarov cyclization, see Ref. 2a.
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