名称:
Efficient synthesis of methyl 4-chloro-6-fluoro-3-formyl-2H-chromene-2-carboxylate and its derivatives
摘要:
Methyl 4-chloro-6-fluoro-3-formyl-2H-chromene-2-carboxylate was synthesized conveniently using Vilsmeier reagent. A series of new 2H-chromenes was prepared in high yields by introducing a corresponding beta-halovinylaldehyde into condensation and cyclization reactions with active methylene compounds.
DOI:
10.1007/s00706-011-0595-2