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- W2133670642 abstract "Reactions of 2-(methylchalcogeno)phenyl vinyl ketones 1 and 4 with aldehydes 5 were conducted in the presence of BF3·Et2O. The reaction was quenched by addition of Et3N and gave the Morita−Baylis−Hillman adducts 6−7 in good yields. When the reaction mixture of 1 with 5a was worked up with saturated aqueous NaHCO3, the sulfonium salt 8a was obtained together with 6. Ketones 10, α-diketones, and α-oxo esters 13, which hardly react in the traditional Morita−Baylis−Hillman reaction, similarly reacted with 2-(methylchalcogeno)phenyl vinyl ketones 1 and 4 to give the Morita−Baylis−Hillman adducts 11−12 and 14−15. Selenochromanones 9 and 16 were obtained together with 7 and 15 from reactions of seleno derivative 4, with 5 and 13 as by-products. The formation mechanism for the sulfonium salt syn-trans-8a is discussed. (© Wiley-VCH Verlag GmbH & Co. KGaA, 69451 Weinheim, Germany, 2003)" @default.
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- W2133670642 date "2004-04-27" @default.
- W2133670642 modified "2023-10-18" @default.
- W2133670642 title "Chalcogeno Morita—Baylis—Hillman Reaction of 2-(Methylchalcogeno)phenyl Vinyl Ketones with Aldehydes, Ketones, and α-Dicarbonyl Compounds." @default.
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- W2133670642 doi "https://doi.org/10.1002/chin.200417176" @default.
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