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Synthesis 2003(6): 0920-0924
DOI: 10.1055/s-2003-38692
DOI: 10.1055/s-2003-38692
PAPER
© Georg Thieme Verlag Stuttgart ˙ New York
C-C Bond Formation by Radical Cyclization: Synthesis of Pyrimidine-Annulated Heterocycles
Further Information
Received
27 January 2003
Publication Date:
16 April 2003 (online)
Publication History
Publication Date:
16 April 2003 (online)
Abstract
A number of pyrimidino[3,2-c]tetrahydroisoquinolin-2,4-diones are synthesized in excellent yields from 1,3-dialkyl-5-(N-2′-bromobenzyl,N-methyl)aminopyrimidine-2,4-diones by intramolecular addition of aryl radical to the uracil ring bearing the amino nitrogen atom. Usual aerial oxidation in this type of cyclization with Bu3SnH is not observed in the present instance.
Key words
pyrimidine - heterocycles - radical cyclization - organotin reagent - 6-endo-trig
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