1322774-91-3Relevant articles and documents
Efficient Synthesis of (Z)-Aurones by the Thallium(I) acetate-Catalyzed 5-exo Cyclization of o-(Alkynon-1-yl)phenols
Lee, Jae In,Kim, Han Nah
, p. 751 - 753 (2019/07/03)
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Synthesis of γ-benzopyranone by TfOH-promoted regioselective cyclization of o-alkynoylphenols
Yoshida, Masahito,Fujino, Yuta,Doi, Takayuki
, p. 4526 - 4529 (2011/10/09)
Regioselective cyclization of o-alkynoylphenols forming γ-benzopyranones has been demonstrated. Trifluoromethanesulfonic acid (TfOH) induced 6-endo cyclization of o-alkynoylphenols without forming 5-exo cyclized benzofuranone derivatives to provide the corresponding γ-benzopyranones in high yields.