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ChemInform Abstract: Reactivity of Dimethylphenylsilyllithium Toward 5- and 6-Substituted 1,3-Dimethyluracil Derivatives.

✍ Scribed by Raffaele Saladino; Luigi Stasi; Gabriele Volpe; Rosario Nicoletti; Maurizio Botta

Publisher
John Wiley and Sons
Year
2010
Weight
35 KB
Volume
30
Category
Article
ISSN
0931-7597

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✦ Synopsis

Reactivity of Dimethylphenylsilyllithium Toward 5-and 6-Substituted 1,3-Dimethyluracil Derivatives.

-The reactions of Li-SiMe 2 -Ph (II) with several 5- and6-substituted 1,3-dimethyluracil derivatives is studied. In general, (II) reacts with 5-substituted uracils by selective addition at the electrophilic C-6 position of the uracil ring to furnish the corresponding 6silyl-5,6-dihydrouracil derivatives [cf. (VII)]. Reactions of silyllithium (II) with 6-substituted uracils show a different selectivity and an unusual addition at the 5-position can be observed [cf. (XI)]. -(SALADINO, RAFFAELE; STASI,

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