<b>Microwave-Assisted Ring Opening of Epoxides with Pyrimidine Nucleobases: A Rapid Entry into</b>
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<b>-Nucleoside Synthesis</b>
作者:A. Khalafi-Nezhad、M. N. Rad、A. Khoshnood
DOI:10.1055/s-2004-815968
日期:——
Microwaveirradiation strongly accelerates the regioselective nucleophilic ring opening of epoxides by pyrimidine nucleobases. In the presence of tetrabutylammonium bromide (TBAB), various bases were elaborated to determine the proper base in which it can activate N 1 rather than N3 for alkylation. It was shown that MgO not only could serve as an eligible base, but also enhanced the selectivity and