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Figure 1 Reagents and conditions: (i) methyl 3-amino­thio­phene-2-carboxyl­ate, dioxane, reflux, 2 h; (ii) conc. H2SO4, conc. HNO3, −30 °C, 45 min.

Journal logoCRYSTALLOGRAPHIC
COMMUNICATIONS
ISSN: 2056-9890
Volume 68| Part 10| October 2012| Pages o2951-o2952
https://doi.org/10.1107/S1600536812038378
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