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Synthesis and reactions of biginelli compounds, 3. Unexpected formation of nitriles from reactions of 6-(dibromomethyl)-1,2,3,4-tetrahydro-2-oxo-5-pyrimidinecarboxylates with sodium azide
C. Oliver Kappe
Liebigs Annalen der Chemie
Volume 1990, Issue 5, pages 505–507, 11. Mai 1990
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http://dx.doi.org/10.1002/jlac.199019900196