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Reviews:
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Reviews:
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Reviews of radical reactions and their stereocontrol:
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Reviews of radical reactions and their stereocontrol:
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55549086205
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Reviews of radical additions to imines and related acceptors:
-
Reviews of radical additions to imines and related acceptors:
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-
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20
-
-
0345240944
-
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Even less basic organocerium reagents can promote aza-enolization of hydrazones:
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Even less basic organocerium reagents can promote aza-enolization of hydrazones:. Enders D., Diez E., Fernandez R., Martin-Zamora E., Munoz J.M., Pappalardo R.R., and Lassaletta J.M. J. Org. Chem. 64 (1999) 6329-6336
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For other selected approaches to intermolecular radical addition to C{double bond, long}N bonds, see:
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Reviews of silicon tethered reactions:
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-
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58
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55549090777
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For other radical equivalents to Mannich-type reactions, see:
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For other radical equivalents to Mannich-type reactions, see:
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Reviews:
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For the first such approach, see:
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For the first such approach, see:
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55549133320
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For recent approaches, see:
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Sibi M., Lu J., and Edwards J. J. Org. Chem. 62 (1997) 5864-5872 Sibi et al. (Ref. 21o) provide an extensive list of reference to earlier syntheses
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See Ref. 42.
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See Ref. 42.
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55549097171
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For a comprehensive review, see:
-
For a comprehensive review, see:
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105
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55549130529
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For more recent examples, see:
-
For more recent examples, see:
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37049108662
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For detailed conformational analysis and NMR data of daunosamine derivatives and their diastereomers, see
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For detailed conformational analysis and NMR data of daunosamine derivatives and their diastereomers, see. Fronza G., Fuganti C., and Grasselli P. J. Chem. Soc., Perkin Trans. 1 (1982) 885-891
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55549085282
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For a review of 3-epi-daunosamine derivatives, see Ref. 17;
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For a review of 3-epi-daunosamine derivatives, see Ref. 17;
-
-
-
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121
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55549108106
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For prior syntheses see Ref. 21g, and the following:
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For prior syntheses see Ref. 21g, and the following:
-
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124
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0025166341
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125
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55549106191
-
-
note
-
2 spin systems with A and B at δ 1.5-2.2 with geminal coupling, characteristic of the C2 position of 2-deoxyglycosides. Furthermore, satisfactory combustion analysis was obtained on the diastereomer mixture.
-
-
-
-
129
-
-
55549114758
-
-
Although a 1,3-allylic strain model may also be considered, the C{double bond, long}N of the (E)-hydrazone bears no cis-substituent, so such an effect is expected to be minimal.
-
Although a 1,3-allylic strain model may also be considered, the C{double bond, long}N of the (E)-hydrazone bears no cis-substituent, so such an effect is expected to be minimal.
-
-
-
-
130
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34547593344
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Similar vicinal dipole repulsion has been observed previously:
-
Similar vicinal dipole repulsion has been observed previously:. Friestad G.K., and Mathies A.K. Tetrahedron 63 (2007) 9373-9381
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55549101329
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Reviews:
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Reviews:
-
-
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134
-
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55549139544
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For selected recent examples, see:
-
For selected recent examples, see:
-
-
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136
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0037182004
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Miyata O., Muroya K., Kobayashi T., Yamanaka R., Kajisa S., Koide J., and Naito T. Tetrahedron 58 (2002) 4459-4479
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55549129665
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Alkynylsilanes have not been employed as silicon-tethered radical precursors, though their use as acceptors is known, see:
-
Alkynylsilanes have not been employed as silicon-tethered radical precursors, though their use as acceptors is known, see:
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55549083578
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note
-
This manuscript provides experimental details for 2-(phenylthio)vinyl addition, which were not previously published. For discussion, including details regarding variable E/Z ratios, see the original communication (Ref. 13).
-
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146
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55549098616
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note
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For stereochemical assignment of 9d″, see Ref. 12.
-
-
-
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149
-
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55549099308
-
-
For representative methods, see:
-
For representative methods, see:
-
-
-
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162
-
-
55549132693
-
-
note
-
Syringe pump addition of the thiol was not required in this case. Addition of AIBN in four 0.2 equiv batches was required to ensure complete conversion.
-
-
-
-
163
-
-
55549117201
-
-
note
-
Pearson has observed a similar inhibition by neighboring basic nitrogen. See Ref. 41f.
-
-
-
-
166
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55549091469
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-
note
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3CN).
-
-
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169
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We thank Dr. M. Harding for kindly providing copies of the data
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Shelton C.J., and Harding M.M. J. Chem. Res., Miniprint (1995) 1201-1209 We thank Dr. M. Harding for kindly providing copies of the data
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Shelton, C.J.1
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55549137782
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-
note
-
For a detailed comparison of various daunosamine syntheses, see Supplementary data of Ref. 21a.
-
-
-
|