Abstract
Abstract Bis (1, 1, 1, 3, 3, 3-hexafluoro-2-propyl) phosphonate was most promising as a phosphonylating agent for the preparation of nucleoside-3′-phosphonate units. 1, 3-Dimethyl-2-chloro-imida-zolinium chloride (UWC) as a coupling agent has successfully been used for the internucleotidic H-phosphonate bonds formation via the H-phosphonate approach on a solid support.
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