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1
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Pietra, F.4
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Guerriero, A.2
Ripamonti, M.3
Debitus, C.4
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4
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Hong, T.W.1
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5
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33847424464
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Taken in part from: Anderson, G. T. Ph.D. Thesis, The Pennsylvania State University, 1995
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Taken in part from: Anderson, G. T. Ph.D. Thesis, The Pennsylvania State University, 1995.
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6
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0000792718
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Weinreb, S.A.I.1
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8
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0000730407
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Heterodienophile Additions to Dienes
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Weinreb, S. M. Heterodienophile Additions to Dienes. In Comprehensive Organic Synthesis; Trost, B. M., Fleming, I., Eds.; Pergamon: Oxford, 1991; Vol. 5, p 401.
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Comprehensive Organic Synthesis; Trost, B. M., Fleming, I., Eds.; Pergamon: Oxford
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Weinreb, S.M.1
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9
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0001268965
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Garigipati, R. S.; Freyer, A. J.; Whittle, R. R.; Weinreb, S. M. J. Am. Chem. Soc. 1984,106, 7861.
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Garigipati, R.S.1
Freyer, A.J.2
Whittle, R.R.3
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11
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0032524830
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Muxworthy, J. P.; Wilkinson, J. A.; Procter, G. Tetrahedron Lett. 1995, 36, 7539.
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For alternative preparations of oxazolidinone 4a see: Mulvihill, M. J.; Gage, J. L.; Miller, M. J. J. Org. Chem. 1998, 63, 3357. Muxworthy, J. P.; Wilkinson, J. A.; Procter, G. Tetrahedron Lett. 1995, 36, 7539.
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Mulvihill, M.J.1
Gage, J.L.2
Miller, M.J.3
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12
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33847432133
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note
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Reaction of sulfoxide 3 with HMPT in ethanol led to a mixture of cyclic carbamate 4a (44%) and uncyclized ethyl carbamate A (40%). Compound A could be cyclized in high yield to 4a with potassium tert-butoxide (see the Supporting Information).
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15
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0000120488
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(a) Weinreb, S. M.; Demko, D. M.; Lessen, T. A.; Demer's, J. P. Tetrahedron Lett. 1986, 27, 2099.
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Weinreb, S.M.1
Demko, D.M.2
Lessen, T.A.3
Demers, J.P.4
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16
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85027975253
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(b) Weinreb, S. M.; Chase, C. E.; Wipf, P.; Venkatraman, S. Org. Synth. 1997, 75, 161.
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Org. Synth.
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Weinreb, S.M.1
Chase, C.E.2
Wipf, P.3
Venkatraman, S.4
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17
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33847466902
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4 reduction of la, retains antitumor activity, although at a reduced level.10
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4 reduction of la, retains antitumor activity, although at a reduced level.10
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19
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0032555006
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Cook, G. R.; Shanker, P. S. Tetrahedron Lett. 1998, 39, 4991
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For formation of π-allylpalladium complexes from oxazolidinones, see: Cook, G. R.; Shanker, P. S. Tetrahedron Lett. 1998,39,3405. Cook, G. R.; Shanker, P. S. Tetrahedron Lett. 1998, 39, 4991.
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(1998)
Tetrahedron Lett.
, vol.39
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Cook, G.R.1
Shanker, P.S.2
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20
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0026722772
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For reviews of the stereochemistry of allylic palladations, see: (a) Frost, C. G.; Howarth, J.; Williams, J. M. J. Tetrahedron: Asymmetry 1992, 3, 1089.
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(1992)
Tetrahedron: Asymmetry
, vol.3
, pp. 1089
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Frost, C.G.1
Howarth, J.2
Williams, J.M.J.3
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22
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0010518961
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N vs C alkylation of indole can be controlled by an appropriate choice of reaction conditions.
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See, for example: Billups, W. E.; Erkes, R. S.; Reed, L. E. Synth. Commun. 1980, 10, 147. N vs C alkylation of indole can be controlled by an appropriate choice of reaction conditions.
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(1980)
Synth. Commun.
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, pp. 147
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Billups, W.E.1
Erkes, R.S.2
Reed, L.E.3
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23
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0001329983
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Electrophilic Heteroatom Cyclizations
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For reviews of heteroatom/olefm cyclizations promoted by electrophiles, see: (a) Harding, K. E.; Tiner, T. H. Electrophilic Heteroatom Cyclizations. In Comprehensive Organic Synthesis; Trost, B. M., Fleming, I., Eds.; Pergamon: Oxford, 1991; Vol. 4, p 363.
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Comprehensive Organic Synthesis; Trost, B. M., Fleming, I., Eds.; Pergamon: Oxford
, vol.4
, pp. 363
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Harding, K.E.1
Tiner, T.H.2
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25
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33847467887
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The structures of intermediates 18 and 20 were established by 2D NMR (HMBC).
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The structures of intermediates 18 and 20 were established by 2D NMR (HMBC).
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