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2);
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36
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34250783972
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2).
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2).
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37
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21144478938
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At concentrations of 0.1M. Either at higher concentrations, by concentrating the final mixture in the rotary evaporator, or when larger amounts of pyrrolidine are used, deacetylation also occurs during this step
-
At concentrations of 0.1M. Either at higher concentrations, by concentrating the final mixture in the rotary evaporator, or when larger amounts of pyrrolidine are used, deacetylation also occurs during this step.
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42
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0035540343
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6]DMSO, H5″ (tetrazole ring) at δ = 9.56 ppm and C5″ at δ = 143.6 ppm. See the Supporting Information for the full spectra. This compound (14) and related derivatives (not substituted at C5″) had not been reported, to our knowledge. By opening anhydrothymidine with the tetrazolate anion, on heating at 120°C, only its 1,4-disubstituted isomer (the 2-tetrazolyl derivative) was obtained, as we have confirmed; See: A. A. Malin, V. A. Ostrovskii, Russ. J. Org. Chem. 2001, 37, 759.
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6]DMSO, H5″ (tetrazole ring) at δ = 9.56 ppm and C5″ at δ = 143.6 ppm. See the Supporting Information for the full spectra. This compound (14) and related derivatives (not substituted at C5″) had not been reported, to our knowledge. By opening anhydrothymidine with the tetrazolate anion, on heating at 120°C, only its 1,4-disubstituted isomer (the 2-tetrazolyl derivative) was obtained, as we have confirmed; See: A. A. Malin, V. A. Ostrovskii, Russ. J. Org. Chem. 2001, 37, 759.
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Throughout the more than thirty years in which organic azides have been used in our lab from time to time [see, e.g.: M. Rull, J. Vilarrasa, Tetrahedron Lett. 1976, 17, 4175;
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