Answers are grounded in this paper and cite their sources.
A new method for the synthesis of pyran fused coumarins by 3-bromo-4-hydroxycoumarins as cyclic α-halo ketones based on an organocatalyst assisted three-component tandem reaction is investigated. To the best of our knowledge, cyclic α-halo ketones have not yet been used for the synthesis of pyran fused coumarins.
No takes yet. Share an insight, caveat, or question.
Ahadi et al. (2012) studied this question.
Synapse has enriched 10 related papers. Consider them for comparative context: