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0001523773
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J. Stawinski, in Handbook of Organophosphorus Chemistry, ed. R. Engel, Marcel Dekker, New York, 1992, pp. 377-434.
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9
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12
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4243259606
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14
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33746968973
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note
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Some less reactive aryl nucleoside H-phosphonates were isolated and characterized. See the Experimental section.
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15
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0030592799
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V. Ozola, C. B. Reese and Q. L. Song, Tetrahedron Lett., 1996, 37, 8621.
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0026645156
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17
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0000427396
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H. Almer, J. Stawinski, R. Strömberg and M. Thelin, J. Org. Chem., 1992, 57, 6163.
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Almer, H.1
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18
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9544233904
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P. J. Garegg, T. Regberg, J. Stawinski and R. Strömberg, Nucleosides Nucleotides, 1987, 6, 655.
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19
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33747016058
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note
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In the reactions of 1 with 2c and 2d, no bispivaloyl phosphite 9 was present in the reaction mixtures and the major side products were those corresponding to diaryl phosphites 7 and aryl pivaloyl phosphites 8. For more acidic phenols, 2e-g, the amount of 9 increased along the series, and for a highly acidic pentachlorophenyl, it was the major reaction product (no formation of nucleoside pentachlorophenyl H-phosphonate was observed in this instance).
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20
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33747019350
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note
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In these reactions, the unreacted starting material 1 and the side products 7 + 8 + 9 amounted to 19% and 21% (for 2e), 40% and 34% (for 2f), 41% and 38% (for 2g), respectively (the composition of the reaction mixtures after ca. 5 min).
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21
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0001538665
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P. J. Garegg, T. Regberg, J. Stawinski and R. Strömberg, Chem. Scr., 1985, 25, 280.
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Garegg, P.J.1
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23
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9044233654
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J. Stawinski, R. Strömberg, T. Szabó and E. Westman, Nucleosides Nucleotides, 1989, 8, 1029.
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Stawinski, J.1
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24
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33747010953
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J. Stawinski, R. Strömberg, M. Thelin and E. Westman, Nucleosides Nucleotides, 1988, 7, 601.
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Stawinski, J.1
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25
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33845281186
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P. J. Garegg, J. Stawinski and R. Strömberg, J. Org. Chem., 1987, 52, 284.
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Garegg, P.J.1
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26
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33747026512
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note
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The coupling promoted by rather unreactive chlorophosphate 5 (2.5 molar equiv.) was significantly slower, and was complete after ca. 5 h.
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28
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0001231603
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A. Kume, M. Fujii, M. Sekine and T. Hata, J. Org. Chem., 1984, 49, 2139.
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