Diels–Alder reaction of substituted cyclopentadienones with benzothiophene S, S-dioxides: synthesis of dibenzothiophenes, dibenzothiophene S, S-dioxides …
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KD Bharathi, P Manikandan…
Organic Chemistry …, 2025
pubs.rsc.org
The Diels–Alder (DA) reaction of a series of tetrasubstituted cyclopentadienones (CPDs) with benzo [b] thiophene S, S-dioxide analogues in various solvents at different temperatures led to the formation carbocyclic as well as heterocyclic compounds. The intermediate DA adducts underwent CO extrusion followed by different aromatization patterns depending upon the nature of substituents on dienes as well as dienophiles, and temperature to afford these compounds. At temperatures< 150° C, the adducts mostly …
