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2005
Multi-membered N-heterocycles
R 0690
Cascade Reactions of Substituted 1,2,4-Triazines: Rapid Access to Nitrogen-ConPolycycles. — Diaza tetra- and pentacyclic compounds are obtained in excel06- 156 taining
lent yields by a cycloaddition cascade reaction of triazines (I) with a variety of carbonyl
compounds (ketones, aldehydes) and allylic secondary amines. In addition, the formation of azatricycle (IX) from the reaction of triazine (Ia) with decenal (VII) and pyrrolidine demonstrates the scope of the method. — (RAW, S. A.; TAYLOR, R. J. K.; J.
Am. Chem. Soc. 126 (2004) 39, 12260-12261; Dep. Chem., Univ. York, Heslington,
York YO10 5DD, UK; Eng.) — Klein
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