NEW FUNCTIONALIZATION AT THE 5-POSITION OF URACILS BY SELENENYLATION

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Electrophilic substitution of phenylselenenyl chloride at the 5-position of uracils in the presence of silver reagents, such as Ag2O, AgBF4, or CF3CO2Ag, afforded the corresponding 5-phenylselenenyluracils in excellent yields. 1,3-Dimethyl-5-phenylselenenyluracil(2a), 5-phenylselenenyl-(2',3',5'-tri-O-acetyl)uridine(2b), 5-phenylselenoxyl-1,3-dimethyluracil(3a) and 5-phenylselenoxyl-(2',3',5'-tri-O-acetyl)uridine(3b) were used for various transformations at C-5 or C-6 of pyrimidine bases via nucleophilic substitution, a free radical process, and a Michael-type addition utilizing the unique properties of organo-seleno groups located on C-5 of pyrimidine bases.
Publisher
JOHN WILEY SONS INC
Issue Date
1993-10
Language
English
Article Type
Article
Keywords

DERIVATIVES; NUCLEOSIDES; NUCLEOTIDES

Citation

HETEROATOM CHEMISTRY, v.4, no.5, pp.463 - 470

ISSN
1042-7163
DOI
10.1002/hc.520040509
URI
http://hdl.handle.net/10203/55986
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