01296nas a2200145 4500008004100000245013600041210006900177260000800246300001200254490000700266520071600273100001700989700001501006856012901021 2024 eng d00aReaction of 4 (Alkynyloxy)cyclohexa-2,5-dienones with Dimethyl Sulfoxide: a catalyst-free formation of 6/5/3-fused tricyclic enones0 aReaction of 4 Alkynyloxycyclohexa25dienones with Dimethyl Sulfox cDEC a653-6570 v903 a

6/5/3-Fused tricyclic enones were obtained when 4-(alkynyloxy)cyclohexa-2,5-dienones were treated with DMSO at 150 °C. The reaction proceeded via a four-membered oxathietene intermediate. The protocol developed is atom economical, has a broad substrate scope, and is amenable to gram-scale synthesis. The products obtained are susceptible to further synthetic transformations.

1 aRai, Archana1 aDas, Utpal uhttps://library.ncl.res.in/content/reaction-4-alkynyloxycyclohexa-25-dienones-dimethyl-sulfoxide-catalyst-free-formation-653