Abstract
Starting from 2,2'-dihydroxybiphenyl and an allenic ester, the title dibenzo-condensed dioxepine derivative was synthesized using a one-pot procedure.
Highlights
Allenes are versatile reagents in organic synthesis [1]
The second nucleophilic group attacks the same carbon in an intramolecular Michael-type reaction leading to ring closure
Allenic esters have proved to be efficiently attacked by nucleophilic reagents to the central carbon atom
Summary
Allenes are versatile reagents in organic synthesis [1]. The reaction of allenic esters with 1,2-dihydroxy-, 1,2-disulfanyl-, 1-hydroxy-2-sulfanyl-benzenes to yield benzocondensed five-membered heterocycles has been reported [2]. Abstract: Starting from 2,2'-dihydroxybiphenyl and an allenic ester, the title dibenzo-condensed dioxepine derivative was synthesized using a one-pot procedure. Allenes are versatile reagents in organic synthesis [1]. The reaction of allenic esters with 1,2-dihydroxy-, 1,2-disulfanyl-, 1-hydroxy-2-sulfanyl-benzenes to yield benzocondensed five-membered heterocycles has been reported [2].
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