Aromatic and Heteroatomic Chemistry Volume 7

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1977, 14, 745. 68 1844 1 (129) (130) Reactions. ” Anodic methoxylation of 2-(2-thienylmethyl)-furan yields a mixture of geometrically isomeric adducts 63 H. Duerr and H. J. Ahr, Tetrahedron Letters, 1977,1991. 64 J. Bachelet, P. Demerseman, and R. Royer, J. , 1977,14,1409. G. Choudhry, G. Sundstrorn, F. W. M. Van der Wielen, and 0. Hutzinger, Chemosphere, 65 66 67 68 69 ’O 1977,6,327;( b ) A. Norstrorn, K. Anderson, and C. , p. 241. V. V. N. Zhukovskaya, V. V. Tkachenko, and G. N. Dorofeenko, Khim.

1977,42,3717. lZ3 lZs M. Novi, F. Sancassan, G. Guanti. C. Dell'Erba, and G. Leandri, Chimica e Industria, 1977,59,299. H. Herrmann, and G. A. Hoyer, Chem. , 1978,111,770. K. Kobayashi and K. Mutai, Chem. Letters, 1977,1149. l~~ Unlike open-chain a@-unsaturatedsulphones, it does not form the corresponding epoxide when treated with hydroperoxide anion, but instead yields the ketone (254); 3-substituted benzothiophen dioxides (253; R = Me, Et, or Ph) give alcohols (255) in this r e a ~ t i 0 n . l ~ ’ 0 2 0 2 (253) 0 2 (254) (255) The combined action of maleic anhydride and chloranil o n 2,2’-bibenzothiophen (256) leads to the benzothienodibenzothiophen (257).

Adam and I. Erden, Angew. Chem. Internat. , 1978,17, 210. '"M. N. Paddon-Row, H. K. Patney, and R. N. Warrener, Austral. J. , 1977,30,2307. D. Copland, D. Leaver, and W. B. Menzies, Tetrahedron Letters, 1977, 639. 24 Ph J-Jco2. 25Indenone (42) is conveniently prepared by heating the sulphoxide (41);26 2,3-diphenylindenones (43; R = H, Me, Cl, OMe, or NHAc) are produced in low yields by 0 c@o 22 23 24 '' 26 c CI S. E. Reiter, L. C. Dunn, and K. N. Houk, J. Amer. Chem. , 1977,99,4199. C. Jutz, H.

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