Selective synthesis of some 4, 5??dihydro??2H??benzo [g] indazoles and 8, 9??dihydro??2H??benzo [e] indazoles via the vilsmeier??haack reaction under thermal and …

G Sivaprasad, R Sridhar…

文献索引：Journal of Heterocyclic Chemistry, , vol. 43, # 2 p. 389 - 394

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被引用次数: 19

摘要

... extensively utilized to generate a variety of precursors for the synthesis of condensed heterocycles, and a ... Haack cyclisation of iminium species provides access to a large number of heterocyclic systems [17]. ... 951, 831, 742 cm-1; 1H NMR (500 MHz, CDCl3): δ = 2.96 (t, 2H, J= ...