Answers are grounded in this paper and cite their sources.
A simple and efficient one-pot synthesis of tetrahydrobenzo[b]pyrans from the three-component reaction between dimedone, aldehydes, and active methylene compounds using NH4Al(SO4)2·12H2O (Alum) as a catalyst at 80 °C is described. The catalyst exhibits remarkable reactivity and is reusable.
No takes yet. Share an insight, caveat, or question.
Mohammadi et al. (2013) studied this question.
Synapse has enriched 10 related papers. Consider them for comparative context: