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Showing papers on "Benzopyrans published in 1980"

Journal Article•
[The immuno-allergic accidents induced by treatment with a venotropic agent containing catechines. Report of three cases (author's transl)].

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Jaeger A, George C, Lambert H, Rodier L, Lejonc Jl, Larcan A, Mantz Jm 
01 Nov 1980-Therapie

12 citations

Journal Article•DOI•
The Reactions of 2-Phenyl-2H-1-benzopyrans and 2-Phenyl-4H-1-benzopyrans with Lead(IV) Acetate

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Kazu Kurosawa, Katsutoshi Yamaguchi, Yasuyuki Nagata, Hisatake Ohki
01 Jun 1980-Bulletin of the Chemical Society of Japan
TL;DR: In this article, the reactions of 7-methoxy-2-phenyl-2H-1-benzopyran with lead(IV) acetate also gave the corresponding benzofuran and cyclohexadienone.
Abstract: The reactions of 7-methoxy-2-phenyl-2H-1-benzopyran and 7-methoxy-2-phenyl-4H-1-benzopyran with lead(IV) acetate gave 2-benzoyl-6-methoxybenzofuran and 6-acetoxy-3-methoxy-6-(3-oxo-3-phenyl-1 -propenyl)-2,4-cyclo-hexadien-1-one. The reactions of 7-methoxy-2-(p-methoxy-phenyl)-2H-1-benzopyran and 7-methoxy-2-(p-methoxyphen-yl)-4H-1-benzopyran with lead(IV) acetate also gave the corresponding benzofuran and cyclohexadienone. The reaction pathway is discussed.

7 citations

Journal Article•DOI•
The reactions of 2-phenyl-2h-1-benzopyrans and 2-phenyl-4h-1-benzopyrans with lead(iv) acetate

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Kazu Kurosawa, Katsutoshi Yamaguchi, Yasuyuki Nagata, Hisatake Ohki
16 Sep 1980-ChemInform
TL;DR: In this paper, the reactions of 7-methoxy-2-phenyl-2H-1-benzopyran with lead(IV) acetate also gave the corresponding benzofuran and cyclohexadienone.
Abstract: The reactions of 7-methoxy-2-phenyl-2H-1-benzopyran and 7-methoxy-2-phenyl-4H-1-benzopyran with lead(IV) acetate gave 2-benzoyl-6-methoxybenzofuran and 6-acetoxy-3-methoxy-6-(3-oxo-3-phenyl-1 -propenyl)-2,4-cyclo-hexadien-1-one. The reactions of 7-methoxy-2-(p-methoxy-phenyl)-2H-1-benzopyran and 7-methoxy-2-(p-methoxyphen-yl)-4H-1-benzopyran with lead(IV) acetate also gave the corresponding benzofuran and cyclohexadienone. The reaction pathway is discussed.