Answers are grounded in this paper and cite their sources.
Halogen acid-catalysed deprotection and cyclisation of Baylis-Hillman products obtained using O-benzylated salicylaldehyde precursors has been shown to afford 3-(halomethyl)coumarins (3-halomethyl-2H-1-benzopyran-2-ones) chemoselectively and in good yield.
No takes yet. Share an insight, caveat, or question.
Kaye et al. (2002) studied this question.
Synapse has enriched 10 related papers. Consider them for comparative context: