Studies in the vilsmeier-haack reaction: part XXV—synthesis of 3-hetarylcoumarins by the application of the vilsmeier-haack reaction
N. K. Chodankar and S. Seshadri
Dyes and Pigments
Volume 6, Issue 5, 1985, Pages 313-319
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doi:10.1016/0143-7208(85)85001-4